RPSGT (Registered Polysomnographic Technologist) Exam — Questions and Answers

Question 1: Sleep-related hypoventilation is defined by AASM as arterial PCO2 (or surrogate) exceeding:

45 mmHg during any stage of sleep
55 mmHg for ≥30 consecutive minutes
50 mmHg during ≥25% of total sleep time (Correct answer)
40 mmHg during REM sleep

Correct answer: 50 mmHg during ≥25% of total sleep time

AASM defines sleep-related hypoventilation as arterial PCO2 >50 mmHg occurring during ≥25% of total sleep time.

Question 2: What is a dashboard in the context of data reporting?

A visual display that consolidates key metrics and indicators in real-time (Correct answer)
A software tool exclusively for financial reporting
A physical board in the office for posting announcements
A type of database for storing historical records

Correct answer: A visual display that consolidates key metrics and indicators in real-time

A dashboard is a visual interface that consolidates and displays key performance metrics, indicators, and data points, often in real-time, enabling quick assessment of status and performance.

Question 3: What is the standard epoch length used in polysomnography scoring per AASM guidelines?

60 seconds
30 seconds (Correct answer)
45 seconds
20 seconds

Correct answer: 30 seconds

The standard PSG epoch length is 30 seconds, established by Rechtschaffen & Kales and retained in AASM rules.

Question 4: What distinguishes Stage N1 from Stage Wake in a subject who generates occipital alpha rhythm?

Presence of sleep spindles
Absence of chin EMG activity
Alpha activity present for <50% of the epoch (Correct answer)
Presence of K-complexes

Correct answer: Alpha activity present for <50% of the epoch

N1 is scored when alpha activity occupies <50% of the epoch, replaced by low-amplitude mixed-frequency activity.

Question 5: What is the primary goal of quality assurance in professional practice?

To reduce costs by eliminating all testing
To satisfy regulatory requirements with minimum effort
To increase production speed regardless of outcomes
To ensure consistent delivery of products or services that meet established standards (Correct answer)

Correct answer: To ensure consistent delivery of products or services that meet established standards

Quality assurance focuses on ensuring that products, services, and processes consistently meet or exceed established standards and stakeholder expectations.

Question 6: Vertex sharp waves (V waves) in a sleep study are most characteristic of which sleep stage?

REM sleep
N1 sleep (Correct answer)
N2 sleep
N3 sleep

Correct answer: N1 sleep

Vertex sharp waves are electropositive transients maximal at the vertex and are a hallmark of N1 sleep.

Question 7: A patient revokes their written authorization for release of sleep study records. The sleep center must:

Deny the revocation if records were released in good faith
Require a second written revocation before acting
Immediately retrieve all previously released records
Honor the revocation for future disclosures but not retrieve already-released records (Correct answer)

Correct answer: Honor the revocation for future disclosures but not retrieve already-released records

Under HIPAA, a revocation of authorization is effective for future disclosures; it cannot undo information already lawfully released.

Question 8: How is a sleep cycle most accurately defined in standard PSG scoring?

One NREM period followed by one REM period (Correct answer)
A period from N1 onset to the next Stage Wake
A period from sleep onset to the first arousal
90 minutes of consecutive sleep

Correct answer: One NREM period followed by one REM period

A sleep cycle consists of one NREM period (N1–N2–N3) followed by a REM period, typically repeating every 90–110 minutes.

Question 9: A technologist notes chin EMG bursts lasting 0.1–0.5 seconds occurring in REM sleep. These are best described as:

REM sleep behavior disorder activity
Sleep bruxism
Hypnic jerks
Phasic REM muscle activity (Correct answer)

Correct answer: Phasic REM muscle activity

Short, irregular chin EMG bursts (0.1–0.5 sec) during REM are classified as phasic REM muscle activity per AASM scoring rules.

Question 10: What is the primary benefit of adopting technology in professional practice?

Improved efficiency, accuracy, and the ability to scale operations (Correct answer)
Reducing the workforce to zero
Meeting a technology trend without clear purpose
Eliminating the need for human judgment

Correct answer: Improved efficiency, accuracy, and the ability to scale operations

Technology adoption in professional practice primarily improves efficiency, enhances accuracy, and enables scalability of operations while supporting human decision-making.

Question 11: Which element is most critical to include in a sleep lab policy and procedure manual to ensure staff compliance and accountability?

Marketing materials for the sleep center
The personal opinions of the medical director
Clear review/revision dates, scope, and staff acknowledgment signatures (Correct answer)
Detailed equipment purchase costs

Correct answer: Clear review/revision dates, scope, and staff acknowledgment signatures

Effective policies must include review dates to remain current, clearly define scope, and include staff acknowledgments to establish accountability.

Question 12: What is the frequency range of slow wave activity (delta waves) as defined by the AASM Scoring Manual for N3 scoring?

6–8 Hz
4–6 Hz
0.5–2 Hz (Correct answer)
2–4 Hz

Correct answer: 0.5–2 Hz

AASM defines slow wave activity for N3 scoring as frequencies of 0.5–2 Hz with peak-to-peak amplitude >75 µV in frontal leads.

Question 13: During a PAP titration study, at what SpO2 level is supplemental oxygen typically added when oxygen saturation remains persistently low despite adequate PAP therapy?

SpO2 < 85%
SpO2 < 95%
SpO2 < 88% (Correct answer)
SpO2 < 92%

Correct answer: SpO2 < 88%

AASM titration guidelines recommend considering supplemental oxygen addition when SpO2 remains below 88% for more than 5 minutes despite optimized PAP pressure. This threshold aligns with CMS criteria for long-term oxygen therapy and reflects the point at which the hemoglobin-oxygen dissociation curve enters its steep portion.

Question 14: During N3 sleep, the EEG is characterized by:

Low-voltage mixed-frequency activity
Sleep spindles and K-complexes
High-amplitude slow waves occupying ≥20% of the epoch (Correct answer)
Sawtooth waves and REMs

Correct answer: High-amplitude slow waves occupying ≥20% of the epoch

N3 is defined by slow-wave activity (0.5–2 Hz, ≥75 µV) comprising at least 20% of the 30-second epoch.

Question 15: During PSG, a technologist observes rhythmic, saw-tooth appearing artifact in the ECG channel that correlates with the patient's respiratory rate. This is MOST likely:

Respiratory baseline wander from electrode movement (Correct answer)
Sinus arrhythmia causing rate variation
Premature ventricular contractions during apneas
Atrial flutter with a 2:1 block

Correct answer: Respiratory baseline wander from electrode movement

Respiratory baseline wander in the ECG channel is caused by chest movement altering electrode-skin impedance rhythmically at the breathing rate.

Question 16: Which documentation element is REQUIRED in the PSG technologist's report for every study?

Interpretation of AHI and diagnosis
Referring physician's diagnosis
Lights-out and lights-on times with patient-reported sleep quality (Correct answer)
PAP device serial number

Correct answer: Lights-out and lights-on times with patient-reported sleep quality

Lights-out and lights-on times establish the time-in-bed and opportunity for sleep, which are essential parameters for all PSG report documentation.

Question 17: A pediatric patient's parent refuses to allow the child to undergo a recommended sleep study. What should the technologist do?

Contact child protective services immediately
Respect the parent's legal right to refuse and document accordingly (Correct answer)
Proceed with the study because it is in the child's best interest
Sedate the child and proceed without parental consent

Correct answer: Respect the parent's legal right to refuse and document accordingly

Parents are the legal decision-makers for minor children; their refusal must be respected and documented, with the physician notified.

Question 18: What is the first step in the risk management process?

Risk acceptance — deciding to live with all risks
Risk avoidance — canceling all activities
Risk identification — recognizing potential threats and vulnerabilities (Correct answer)
Risk transfer — purchasing insurance immediately

Correct answer: Risk identification — recognizing potential threats and vulnerabilities

Risk identification is the critical first step in risk management, involving systematic recognition and documentation of potential threats and vulnerabilities.

Question 19: What is the AASM-defined minimum frequency for activity to qualify as a sleep spindle?

20 Hz
11 Hz (Correct answer)
8 Hz
16 Hz

Correct answer: 11 Hz

AASM defines sleep spindles as bursts of 11–16 Hz activity lasting 0.5–3 seconds.

Question 20: A CSR (Cheyne-Stokes respiration) pattern requires a minimum of how many central apneas or hypopneas?

3 (Correct answer)
4
2
5

Correct answer: 3

AASM criteria for CSR require ≥3 consecutive central apneas/hypopneas with a cyclic crescendo-decrescendo pattern.

Question 21: The RPSGT credential must be renewed every how many years, and requires how many continuing education credits?

2 years, 20 CECs
5 years, 50 CECs (Correct answer)
3 years, 30 CECs
5 years, 30 CECs

Correct answer: 5 years, 50 CECs

The BRPT requires RPSGTs to renew their credential every 5 years with 50 continuing education credits.

Question 22: Which principle of biomedical ethics requires the sleep technologist to act in the best interest of the patient?

Autonomy
Beneficence (Correct answer)
Justice
Non-maleficence

Correct answer: Beneficence

Beneficence means actively doing good and promoting the patient's well-being, which is a core obligation for healthcare professionals.

Question 23: What is the primary purpose of the expiratory pressure relief feature (e.g., EPR, C-Flex, or A-Flex) available on some CPAP devices?

To automatically increase pressure in response to detected apneas
To slightly reduce pressure during exhalation to improve patient comfort and adherence (Correct answer)
To increase pressure during inspiration to prevent hypopneas
To deliver bilevel pressure support equivalent to BiPAP therapy

Correct answer: To slightly reduce pressure during exhalation to improve patient comfort and adherence

Expiratory pressure relief reduces the delivered pressure by 1-3 cmH2O during the exhalation phase, easing the effort required to breathe out against CPAP pressure. This comfort feature improves patient tolerance and adherence without fundamentally changing the therapeutic pressure during inhalation.

Question 24: A CAP (cyclic alternating pattern) notation in technician comments indicates documentation of:

A cardiac arrhythmia captured during sleep
A periodic EEG pattern of NREM instability with alternating A (activation) and B (background) phases (Correct answer)
A calibration artifact pattern
A continuous positive airway pressure titration event

Correct answer: A periodic EEG pattern of NREM instability with alternating A (activation) and B (background) phases

CAP is an NREM sleep EEG marker of sleep instability, with phase A (phasic activation bursts) alternating with phase B (background), relevant to sleep fragmentation analysis.

Question 25: Periodic breathing in a pediatric PSG is considered clinically significant when it accounts for more than what percentage of total sleep time?

5% (Correct answer)
1%
3%
10%

Correct answer: 5%

AASM pediatric scoring defines periodic breathing as ≥3 sequences of central apnea lasting >3 seconds each, separated by ≤20 seconds of normal breathing. It becomes clinically significant when it occupies more than 5% of total sleep time, at which point it is associated with pathological central respiratory control instability.

Question 26: If N2 features appear early in an epoch and are followed by an arousal that does not reach Wake criteria, how is the epoch scored?

Score as N2 because N2 features were present (Correct answer)
Score as N1 because the arousal disrupted N2
Score as Wake because of the arousal
Score the first half N2 and the second half N1

Correct answer: Score as N2 because N2 features were present

AASM rules state that if N2-qualifying features appear in any part of the epoch and are followed by an arousal not reaching Wake criteria, the whole epoch is scored N2.

Question 27: During a PSG, a patient's airflow signal shows a crescendo-decrescendo pattern lasting 60 seconds cycling every 90 seconds. What is the most likely scoring?

Mixed apnea series
Hypopnea with periodic limb movements
Central sleep apnea with Cheyne-Stokes breathing pattern (Correct answer)
Obstructive apnea cluster

Correct answer: Central sleep apnea with Cheyne-Stokes breathing pattern

The waxing-and-waning crescendo-decrescendo breathing with a cycle length typically 45–90 seconds is the hallmark of Cheyne-Stokes breathing.

Question 28: In polysomnography, what does the term 'montage' refer to?

The paper speed of the PSG tracing
The specific combination and arrangement of recording channels (Correct answer)
The order in which patients are scheduled
The calibration sequence performed before recording

Correct answer: The specific combination and arrangement of recording channels

A montage is the defined set of channels and their derivations used during a PSG recording.

Question 29: When should an epoch be scored Stage N3 rather than N2 even if sleep spindles are present?

When ≥20% of the epoch consists of slow wave activity (Correct answer)
When K-complexes are absent from the epoch
When chin EMG atonia is detected
When the patient is having central apneas

Correct answer: When ≥20% of the epoch consists of slow wave activity

N3 takes precedence over N2 when slow wave activity occupies ≥20% of the epoch, regardless of co-occurring spindles or K-complexes.

Question 30: A central apnea is characterized by cessation of airflow for ≥10 seconds with what respiratory pattern?

Paradoxical thoracoabdominal movement
Absent respiratory effort throughout the event (Correct answer)
Obstructive snoring preceding the event
Increasing respiratory effort throughout the event

Correct answer: Absent respiratory effort throughout the event

Central apneas show absent respiratory effort (both thoracic and abdominal excursion cease) throughout the event, distinguishing them from obstructive apneas.

Question 31: What is the primary purpose of industry regulations in this field?

To limit competition in the marketplace
To generate revenue for regulatory bodies
To create barriers to entry for new professionals
To protect the public and ensure consistent professional standards (Correct answer)

Correct answer: To protect the public and ensure consistent professional standards

Industry regulations are primarily designed to protect the public by ensuring professionals meet consistent standards of competence and conduct.

Question 32: Which artifact most commonly mimics slow eye movements (SEMs) in EOG channels during drowsiness?

EKG pulse artifact
Sweat artifact (Correct answer)
60 Hz electrical interference
ECG artifact

Correct answer: Sweat artifact

Sweat artifacts produce slow, broad deflections in EOG channels that can resemble slow eye movements and must be distinguished by context.

Question 33: According to AASM pediatric scoring rules, a hypopnea must include a peak signal excursion drop of at least what percentage from baseline, associated with either an arousal or a ≥ 3% oxygen desaturation?

20%
10%
50%
30% (Correct answer)

Correct answer: 30%

The AASM recommended pediatric hypopnea definition requires a ≥ 30% drop in the peak oronasal thermal sensor or nasal pressure signal excursion from baseline, associated with either an arousal or a ≥ 3% oxygen desaturation. This 30% threshold is the same as the AASM recommended adult rule.

Question 34: What is the first phase of strategic planning?

Environmental analysis and assessment of current position (Correct answer)
Performance evaluation and reporting
Budget allocation and resource distribution
Implementation of tactical initiatives

Correct answer: Environmental analysis and assessment of current position

Strategic planning begins with analyzing the current environment, including internal strengths and weaknesses and external opportunities and threats (SWOT analysis).

Question 35: What is the appropriate action when discovering a colleague has violated professional standards?

Report through proper channels as outlined in the code of ethics (Correct answer)
Ignore it to maintain the relationship
Handle it privately without documentation
Post about it on social media

Correct answer: Report through proper channels as outlined in the code of ethics

Professional standards require reporting violations through proper channels to protect the public and maintain the integrity of the profession.

Question 36: After an epoch of Stage R, the next epoch has no REMs and ambiguous EEG. Under what condition can it still be scored as Stage R?

At least one sleep spindle is present
Delta waves comprise less than 20% of the epoch
Chin EMG remains low and no arousal or major body movement has occurred (Correct answer)
The epoch immediately follows a K-complex

Correct answer: Chin EMG remains low and no arousal or major body movement has occurred

Stage R continues across epochs without REMs as long as chin EMG stays low and no arousal, major body movement, or awakening has terminated REM.

Question 37: When scoring a split-night PSG, titration data should begin after how many hours of diagnostic recording according to AASM guidelines?

4 hours
3 hours
1 hour
2 hours (Correct answer)

Correct answer: 2 hours

AASM guidelines recommend at least 2 hours of diagnostic recording before initiating CPAP titration on a split-night study.

Question 38: What is the most effective leadership approach in professional settings?

Delegating all decisions to the team without guidance
Avoiding all conflict and difficult conversations
Using the same authoritative style for all situations
Adapting leadership style to the situation and team needs (Correct answer)

Correct answer: Adapting leadership style to the situation and team needs

Effective leadership requires adapting your approach based on the situation, team capabilities, and organizational needs — known as situational leadership.

Question 39: During a split-night study, what minimum criteria must typically be met before transitioning from the diagnostic to the CPAP titration portion, per AASM guidelines?

At least 1 hour of diagnostic recording with any obstructive events
At least 4 hours of diagnostic recording with an AHI ≥ 15 events/hour
At least 2 hours of diagnostic recording with an AHI ≥ 40 events/hour (Correct answer)
REM sleep must be recorded before transitioning

Correct answer: At least 2 hours of diagnostic recording with an AHI ≥ 40 events/hour

AASM guidelines specify that a split-night study requires at least 2 hours of diagnostic sleep and an AHI ≥ 40 events/hour (or AHI 20-40 with clinical justification such as severe hypoxemia) before proceeding to CPAP titration in the same night.

Question 40: Which risk response strategy involves reducing the likelihood or impact of a risk?

Risk acceptance
Risk mitigation (Correct answer)
Risk transfer
Risk escalation

Correct answer: Risk mitigation

Risk mitigation involves taking proactive steps to reduce either the probability of a risk occurring or its potential impact if it does occur.

Question 41: During NREM sleep, a respiratory event with ≥30% reduction in airflow lasting ≥10 seconds associated with 3% oxygen desaturation should be scored as:

Central apnea
Respiratory effort-related arousal (RERA)
Hypopnea (Correct answer)
Obstructive apnea

Correct answer: Hypopnea

A ≥30% airflow reduction ≥10 seconds with ≥3% desaturation meets AASM criteria for a hypopnea.

Question 42: What is the minimum AHI threshold for diagnosing moderate obstructive sleep apnea per AASM criteria?

30 events/hour
15 events/hour (Correct answer)
50 events/hour
5 events/hour

Correct answer: 15 events/hour

Moderate OSA is defined as an AHI of 15–29 events per hour per AASM classification guidelines.

Question 43: When reporting CPAP titration results, the optimal pressure is the level that eliminates:

Apneas in NREM sleep only
Obstructive apneas, hypopneas, RERAs, and snoring in all sleep stages and positions (Correct answer)
Desaturations below 88%
All snoring only

Correct answer: Obstructive apneas, hypopneas, RERAs, and snoring in all sleep stages and positions

Optimal CPAP pressure abolishes obstructive apneas, hypopneas, RERAs, and snoring across all sleep stages and body positions.

Question 44: During a sleep study, you discover a patient's prescribed CPAP pressure appears ineffective but you are not authorized to adjust it. What should you do?

Adjust the pressure based on your clinical judgment
Document your observations and notify the supervising physician (Correct answer)
Discontinue the study and send the patient home
Do nothing since it is not within your scope to observe such issues

Correct answer: Document your observations and notify the supervising physician

Technologists must operate within their scope of practice by documenting findings and escalating clinical concerns to the supervising physician.

Question 45: Why is confidentiality important in professional practice?

It simplifies communication processes
It eliminates the need for documentation
It reduces paperwork requirements
It protects sensitive information and maintains trust between professionals and clients (Correct answer)

Correct answer: It protects sensitive information and maintains trust between professionals and clients

Confidentiality is essential because it protects sensitive information entrusted to professionals and maintains the trust necessary for effective professional relationships.

Question 46: A patient with severe COPD and no co-existing OSA shows SpO2 < 88% for more than 30% of total sleep time on nocturnal oximetry. Which treatment is most appropriate?

CPAP titration study to treat presumed obstructive apneas
Positional therapy to reduce supine breathing impairment
Mandibular advancement device to reduce respiratory effort
Nocturnal supplemental oxygen therapy (Correct answer)

Correct answer: Nocturnal supplemental oxygen therapy

In COPD patients without OSA, nocturnal desaturation results from hypoventilation and ventilation-perfusion mismatch rather than airway obstruction. CPAP would not correct this. Supplemental oxygen is the appropriate intervention, and criteria for nocturnal oxygen in COPD include SpO2 < 88% for ≥ 5 minutes during sleep, which this patient clearly meets.

Question 47: What role does continuing education play in maintaining certification?

It is required only for international practice
It only applies to entry-level professionals
It ensures professionals stay current with evolving standards and practices (Correct answer)
It is purely optional with no impact on certification

Correct answer: It ensures professionals stay current with evolving standards and practices

Continuing education is essential to maintaining certification as it ensures professionals remain current with industry developments and evolving standards.

Question 48: In the standard PSG setup, leg EMG electrodes are placed on the anterior tibialis muscles of both legs. What minimum inter-electrode distance is recommended to ensure proper recording?

2-3 cm apart on the anterior tibialis, one-third of the way down the lower leg (Correct answer)
1-2 cm apart on the same muscle belly
5-7 cm apart, one on each side of the knee
Electrodes placed on different legs are always referenced to each other

Correct answer: 2-3 cm apart on the anterior tibialis, one-third of the way down the lower leg

AASM recommends placing leg EMG electrodes 2-3 cm apart longitudinally on the belly of the anterior tibialis muscle, approximately one-third of the way down from the knee. This placement optimally captures tibialis muscle bursts associated with periodic limb movements, while minimizing cross-talk from adjacent muscles.

Question 49: A positive occipital sharp transient of sleep (POSTS) is best identified on which EEG derivation?

O2-M1 (Correct answer)
C4-M1
F4-M1
E1-M2

Correct answer: O2-M1

POSTS are maximal over occipital regions and best seen on O1/O2 derivations referenced to the contralateral mastoid.

Question 50: Which neurotransmitter system is primarily implicated in the pathophysiology of narcolepsy type 1?

Histaminergic neurons in the tuberomammillary nucleus
Hypocretin/orexin neurons in the lateral hypothalamus (Correct answer)
Dopaminergic neurons in the ventral tegmental area
Serotonergic neurons in the dorsal raphe nucleus

Correct answer: Hypocretin/orexin neurons in the lateral hypothalamus

Narcolepsy type 1 results from autoimmune loss of hypocretin (orexin)-producing neurons in the lateral hypothalamus, causing CSF hypocretin-1 levels below 110 pg/mL.

Question 51: An EEG frequency shift qualifies as an arousal in AASM scoring if it lasts a minimum of how many seconds?

10 seconds
3 seconds (Correct answer)
5 seconds
1 second

Correct answer: 3 seconds

AASM defines an arousal as an abrupt EEG frequency shift lasting ≥3 seconds, preceded by ≥10 seconds of stable sleep.

Question 52: The Respiratory Disturbance Index (RDI) differs from the AHI in documentation by including:

Apneas, hypopneas, AND respiratory effort-related arousals (RERAs) (Correct answer)
Apneas and arousals unrelated to breathing
Hypopneas and SpO2 drops only
Apneas and central events only

Correct answer: Apneas, hypopneas, AND respiratory effort-related arousals (RERAs)

RDI = (apneas + hypopneas + RERAs) ÷ total sleep time in hours, making it a broader measure of respiratory disturbance than AHI alone.

Question 53: Which foundational principle is most critical to professional practice in this field?

Following only traditional methods without adaptation
Maximizing revenue above all other considerations
Prioritizing speed over accuracy in all situations
Evidence-based decision making and continuous improvement (Correct answer)

Correct answer: Evidence-based decision making and continuous improvement

Evidence-based decision making ensures that professional practices are grounded in proven methodologies and current best practices.

Question 54: A sleep technologist is asked by a patient to share another patient's sleep study results 'since they are close friends.' What is the correct response?

Decline and explain that all patient information is confidential under HIPAA regardless of the relationship (Correct answer)
Share the results since it is a minor request between friends
Check if the requesting patient signed a friend authorization form
Share only non-identifying information

Correct answer: Decline and explain that all patient information is confidential under HIPAA regardless of the relationship

HIPAA prohibits disclosure of any patient's protected health information without that patient's explicit written authorization, regardless of the requester's relationship to the patient.

Question 55: In a PSG report, the respiratory disturbance index (RDI) differs from AHI because it also includes:

Snoring events
Central apneas only
Respiratory effort-related arousals (RERAs) (Correct answer)
Cheyne-Stokes events only

Correct answer: Respiratory effort-related arousals (RERAs)

RDI = AHI + RERA index; it counts apneas, hypopneas, AND respiratory effort-related arousals per hour of sleep.

Question 56: A patient confides that they are experiencing domestic violence. As an RPSGT, what is the appropriate response?

Follow your facility's protocol for reporting and offer appropriate resources (Correct answer)
Ignore it because it is outside the scope of sleep medicine
Confront the abuser directly on behalf of the patient
Break confidentiality and contact police without the patient's input

Correct answer: Follow your facility's protocol for reporting and offer appropriate resources

Healthcare professionals should follow facility protocols, which typically involve offering resources and involving social services or mandated reporting where applicable.

Question 57: What EEG characteristic distinguishes Stage N3 sleep from Stage N2 sleep?

High-amplitude slow waves occupying ≥20% of epoch (Correct answer)
Presence of K-complexes
Alpha intrusions
Presence of sleep spindles

Correct answer: High-amplitude slow waves occupying ≥20% of epoch

N3 is defined by slow-wave activity (≥75 µV, 0.5–2 Hz) occupying ≥20% of the scoring epoch.

Question 58: For pediatric patients (aged 2–13 years), what slow-wave amplitude threshold differs from adult AASM scoring criteria?

Children use >100 µV instead of >75 µV for N3 scoring
Children do not score N3 sleep at all
Children use >75 µV identical to adult criteria
Children use >50 µV instead of >75 µV for N3 scoring (Correct answer)

Correct answer: Children use >50 µV instead of >75 µV for N3 scoring

Pediatric AASM scoring rules lower the N3 slow-wave amplitude threshold to >50 µV (compared to >75 µV in adults) because children normally generate higher-amplitude slow waves.

Question 59: Which of the following best describes a K-complex?

A burst of 12-14 Hz waveforms lasting ≥0.5 s
Sawtooth waves preceding REM bursts
High-voltage slow waves >75 µV lasting ≥2 s
A well-delineated negative sharp wave followed by a positive component lasting ≥0.5 s (Correct answer)

Correct answer: A well-delineated negative sharp wave followed by a positive component lasting ≥0.5 s

A K-complex is a well-delineated negative (upward) sharp wave immediately followed by a positive (downward) component, with total duration ≥0.5 seconds.

Question 60: Which of the following best describes 'sleep efficiency'?

The number of awakenings per hour of sleep
The percentage of time in bed actually spent asleep (Correct answer)
The latency from lights out to first epoch of N2
The ratio of REM sleep to total sleep time

Correct answer: The percentage of time in bed actually spent asleep

Sleep efficiency = (total sleep time / time in bed) × 100, expressed as a percentage.

Question 61: A technologist notices the chin EMG signal is flat throughout the recording. The FIRST troubleshooting step should be:

Check electrode impedances at the chin site (Correct answer)
Replace the EMG electrodes and reapply
Switch to a backup chin EMG channel if available
Increase the amplifier sensitivity setting

Correct answer: Check electrode impedances at the chin site

Checking impedance first identifies whether the problem is poor electrode contact (high impedance) before making hardware changes.

Question 62: Which behavior best demonstrates transformational leadership in a polysomnography setting?

Making all decisions independently without staff input
Rewarding performance only through monetary bonuses
Inspiring staff to embrace innovation in patient care and continuous professional development (Correct answer)
Strictly enforcing existing rules without questioning their effectiveness

Correct answer: Inspiring staff to embrace innovation in patient care and continuous professional development

Transformational leaders motivate staff by articulating a compelling vision and fostering a culture of growth and innovation.

Question 63: A respiratory effort-related arousal (RERA) is characterized by which of the following?

Paradoxical breathing during NREM sleep
Cessation of airflow for ≥10 seconds without respiratory effort
A sequence of breaths lasting ≥10 seconds with flattened inspiratory airflow leading to arousal (Correct answer)
A ≥3% oxygen desaturation following an apnea

Correct answer: A sequence of breaths lasting ≥10 seconds with flattened inspiratory airflow leading to arousal

A RERA is a sequence of breaths ≥10 seconds showing flattened inspiratory airflow or increasing respiratory effort culminating in an arousal, not meeting apnea or hypopnea criteria.

Question 64: What is the minimum duration of a sleep spindle required for scoring per AASM rules?

0.25 seconds
0.75 seconds
0.5 seconds (Correct answer)
1.0 seconds

Correct answer: 0.5 seconds

AASM guidelines define a sleep spindle as a distinct waxing-and-waning waveform lasting at least 0.5 seconds, usually 12-14 Hz.

Question 65: Which approach best describes the integration of theory and practice in this profession?

Following theory exactly without any modification
Applying theoretical knowledge to solve real-world problems while adapting to specific contexts (Correct answer)
Using theory only during examinations
Ignoring theory and relying solely on experience

Correct answer: Applying theoretical knowledge to solve real-world problems while adapting to specific contexts

Effective professional practice involves applying theoretical foundations to real-world situations while adapting approaches to specific contexts and needs.

Question 66: What polysomnographic finding is pathognomonic for REM sleep behavior disorder (RBD)?

Increased slow-wave sleep
REM sleep without atonia (Correct answer)
Elevated AHI during REM
Sleep-onset REM periods

Correct answer: REM sleep without atonia

RBD is diagnosed by PSG demonstrating loss of normal REM atonia (REM sleep without atonia) along with abnormal motor behaviors during REM.

Question 67: A sleep center manager wants to evaluate whether a new patient education program improved CPAP adherence. Which study design is MOST appropriate?

Observation of a single patient's compliance
Informal staff opinion survey
Review of equipment vendor sales data
Pre- and post-intervention comparison with defined adherence metrics (Correct answer)

Correct answer: Pre- and post-intervention comparison with defined adherence metrics

A pre- and post-intervention design with defined metrics allows objective measurement of whether the program produced the desired change in adherence.

Question 68: A sleep center is experiencing high rates of near-miss incidents. Which safety culture concept should the leadership team prioritize implementing?

Increased surveillance of individual staff performance
Restricting access to incident report forms
Anonymous disciplinary actions for all errors
Blame-free (just culture) reporting environment (Correct answer)

Correct answer: Blame-free (just culture) reporting environment

A just culture encourages transparent near-miss reporting without blame, enabling the organization to identify and correct systemic risks before harm occurs.

Question 69: What is the recommended low-frequency filter setting for scoring EEG in polysomnography?

0.3 Hz (Correct answer)
1.0 Hz
0.1 Hz
5.0 Hz

Correct answer: 0.3 Hz

AASM recommends a 0.3 Hz low-frequency filter for EEG channels to preserve slow-wave activity.

Question 70: An epoch of N3 is followed by an epoch with mixed frequencies, low-amplitude EEG, REM bursts, and low chin EMG. This transition is best described as:

N3 to Wake
N3 to N1 with vertex waves
N3 directly to Stage R (REM rebound) (Correct answer)
N3 to N2 with spindles

Correct answer: N3 directly to Stage R (REM rebound)

Direct transitions from slow-wave sleep (N3) to REM can occur, particularly during early morning hours, and are scored as Stage R when criteria are met.

Question 71: Which of the following EEG waveforms is characterized by a frequency of 0.5–2 Hz and amplitude greater than 75 µV?

K-complexes
Sleep spindles
Alpha waves
Delta waves (Correct answer)

Correct answer: Delta waves

Delta waves are defined by frequencies of 0.5–2 Hz and amplitudes exceeding 75 µV, and they define slow-wave sleep.

Question 72: An RPSGT is asked to participate in a quality improvement meeting about patient satisfaction scores. What type of communication is most valuable to bring to this meeting?

Documented patient feedback, observed barriers to comfort, and suggestions based on clinical experience (Correct answer)
Personal opinions about physician preferences
Complaints about scheduling and staffing
Comparisons to competitor sleep labs

Correct answer: Documented patient feedback, observed barriers to comfort, and suggestions based on clinical experience

Evidence-based observations and documented patient feedback provide actionable data for quality improvement discussions.

Question 73: What is the primary purpose of professional documentation?

To fill storage space with paper files
To create work for administrative staff
To satisfy paperwork requirements without practical use
To create an accurate, permanent record of activities, decisions, and outcomes (Correct answer)

Correct answer: To create an accurate, permanent record of activities, decisions, and outcomes

Professional documentation creates accurate, permanent records of activities, decisions, and outcomes that serve legal, regulatory, quality, and communication purposes.

Question 74: What constitutes a conflict of interest in professional practice?

When two colleagues disagree on a procedure
When a client requests a service outside normal hours
When personal interests could improperly influence professional judgment (Correct answer)
When multiple projects have the same deadline

Correct answer: When personal interests could improperly influence professional judgment

A conflict of interest occurs when personal, financial, or other interests could compromise or appear to compromise professional objectivity and judgment.

Question 75: According to AASM guidelines, which electrode region is used to measure slow wave activity for N3 scoring?

Central (C3/C4)
Frontal (F3/F4) (Correct answer)
Occipital (O1/O2)
Temporal (T3/T4)

Correct answer: Frontal (F3/F4)

AASM specifies that slow wave activity amplitude and percentage are assessed over frontal derivations (F3 or F4).

Question 76: Sawtooth waves during polysomnography are most commonly associated with which sleep stage?

REM (Correct answer)
N3
N2
N1

Correct answer: REM

Sawtooth waves (2–6 Hz, notched waveforms) are a characteristic feature of REM sleep, often preceding bursts of rapid eye movements.

Question 77: What does "system integration" mean in a technology context?

Using the same password for all systems
Connecting different technology systems to work together and share data seamlessly (Correct answer)
Replacing all existing systems with a single new system
Installing systems in the same physical location

Correct answer: Connecting different technology systems to work together and share data seamlessly

System integration involves connecting different technology systems, applications, or platforms so they can work together, share data, and provide a cohesive user experience.

Question 78: Stage N1 sleep is typically defined by which EEG frequency replacing alpha?

Sigma activity (12-14 Hz)
Beta activity (>13 Hz)
Delta activity (0.5-2 Hz)
Theta activity (4-7 Hz) (Correct answer)

Correct answer: Theta activity (4-7 Hz)

In N1, alpha is replaced by mixed-frequency low-amplitude activity with predominant theta (4-7 Hz) waveforms.

Question 79: A patient asks the RPSGT to explain their preliminary sleep study findings before the physician reviews them. The technologist should:

Refuse all discussion about the study until the physician releases results
Explain what was recorded technically without rendering a medical diagnosis (Correct answer)
Share only findings the patient will find reassuring
Provide a full interpretation of all findings immediately

Correct answer: Explain what was recorded technically without rendering a medical diagnosis

Technologists may explain what was recorded (e.g., electrode placement, events captured) but must leave diagnostic interpretation to the supervising physician.

Question 80: What is the primary purpose of conducting a 'sentinel event' review in a sleep lab?

To perform an in-depth analysis of a serious adverse event and prevent recurrence (Correct answer)
To evaluate technologist performance for annual reviews
To satisfy insurance auditors requesting clinical documentation
To comply with state licensing renewal requirements

Correct answer: To perform an in-depth analysis of a serious adverse event and prevent recurrence

Sentinel event review is a root-cause analysis process focused on understanding system failures that led to a serious event and implementing safeguards to prevent it from happening again.

Question 81: Maintaining professional boundaries with patients primarily means:

Ensuring patients do not learn anything about the technologist personally
Refusing to answer any non-medical questions from patients
Avoiding all personal conversation to remain strictly clinical
Keeping the therapeutic relationship appropriate and not exploiting the patient's vulnerability (Correct answer)

Correct answer: Keeping the therapeutic relationship appropriate and not exploiting the patient's vulnerability

Professional boundaries protect the patient from exploitation and ensure the therapeutic relationship remains focused on their care and well-being.

Question 82: During CPAP titration, persistent flow limitation without discrete apneas or hypopneas is best addressed by:

Increasing pressure in 1 cmH₂O increments (Correct answer)
Decreasing pressure by 1 cmH₂O
Adding supplemental oxygen at 2 L/min
Switching to a chinstrap

Correct answer: Increasing pressure in 1 cmH₂O increments

Flow limitation (flattened inspiratory flow curve) indicates partial upper airway obstruction; increasing CPAP pressure in 1 cmH₂O steps reduces airway resistance.

Question 83: K-complexes are most prominently identified in which EEG derivation?

Frontal (F3/F4) (Correct answer)
Central (C3/C4)
Occipital (O1/O2)
Temporal (T3/T4)

Correct answer: Frontal (F3/F4)

K-complexes are generated in the frontal cortex and are best visualized in frontal EEG derivations (F3/F4), though they are visible across channels.

Question 84: An AASM-accredited sleep center must conduct an ongoing Quality Assurance (QA) program primarily to:

Monitor and improve the quality of patient care and technical performance (Correct answer)
Replace the need for physician medical direction
Meet IRS nonprofit status requirements
Satisfy state insurance licensing requirements

Correct answer: Monitor and improve the quality of patient care and technical performance

AASM accreditation standards require a formal QA program to continuously evaluate and improve clinical and technical quality within the sleep center.

Question 85: Which statement about documenting periodic limb movements (PLMs) is correct per AASM rules?

PLMs are only scored during REM sleep
PLMs require associated arousals to be counted
Any limb movement longer than 2 seconds qualifies as a PLM series
PLMs are scored in series of ≥4 consecutive movements with inter-movement intervals of 5–90 seconds (Correct answer)

Correct answer: PLMs are scored in series of ≥4 consecutive movements with inter-movement intervals of 5–90 seconds

A PLM series requires ≥4 movements, each lasting 0.5–10 seconds, separated by intervals of 5–90 seconds, and can occur in any sleep stage.

Question 86: The common mode rejection ratio (CMRR) of a PSG amplifier is important because it:

Measures the amplifier's maximum gain
Controls the high-frequency filter bandwidth
Rejects electrical noise shared by both recording electrodes (Correct answer)
Determines the analog-to-digital sampling rate

Correct answer: Rejects electrical noise shared by both recording electrodes

High CMRR enables the differential amplifier to cancel out electrical noise (such as 60 Hz line artifact) that is common to both recording electrodes.

Question 87: Which of the following best describes the concept of 'scope of practice' for an RPSGT?

Tasks defined by state laws, employer policies, and professional standards (Correct answer)
Any task the technologist feels capable of performing
Only tasks explicitly listed in the BRPT examination content outline
Tasks approved solely by the supervising physician on a case-by-case basis

Correct answer: Tasks defined by state laws, employer policies, and professional standards

Scope of practice is defined by a combination of state regulations, employer policies, professional standards, and the technologist's training and competency.

Question 88: Which type of analysis examines data to identify patterns and trends over time?

Root cause analysis
Gap analysis
Cost-benefit analysis
Trend analysis (Correct answer)

Correct answer: Trend analysis

Trend analysis examines data points collected over time to identify patterns, directions, and changes that can inform forecasting and strategic decisions.

Question 89: An RPSGT in a supervisory role needs to provide corrective feedback to a technologist about poor patient interaction skills. Which feedback approach is most constructive?

Send an anonymous note to avoid confrontation
Use the 'sandwich' or DESC (Describe, Express, Specify, Consequences) method in a private setting (Correct answer)
Deliver feedback publicly during a team meeting to reinforce the standard
Delay feedback until the annual performance review

Correct answer: Use the 'sandwich' or DESC (Describe, Express, Specify, Consequences) method in a private setting

Private, structured feedback using a specific model like DESC focuses on behavior and outcomes while preserving the employee's dignity.

Question 90: Adaptive servo-ventilation (ASV) is most appropriate for treating which sleep-related breathing disorder?

REM-related obstructive sleep apnea in otherwise healthy patients
Obesity hypoventilation syndrome with hypercapnia
Primary snoring with an AHI < 5
Complex sleep apnea (treatment-emergent central apnea) or predominant central sleep apnea (Correct answer)

Correct answer: Complex sleep apnea (treatment-emergent central apnea) or predominant central sleep apnea

ASV continuously adjusts pressure support breath-by-breath to servo-control the patient's ventilation, targeting a recent average peak flow. It is specifically designed for complex (mixed/central-predominant) sleep apnea and Cheyne-Stokes respiration, conditions where fixed CPAP or BiPAP are insufficient.

Question 91: Which metric is MOST useful for evaluating the operational efficiency of a polysomnography program?

Number of technologists employed
Study turnaround time from acquisition to report delivery (Correct answer)
Revenue per study scored
Total square footage of the sleep lab

Correct answer: Study turnaround time from acquisition to report delivery

Turnaround time directly reflects workflow efficiency and affects both patient care and revenue cycle.

Question 92: A lead technologist identifies that one team member consistently performs exceptionally well and has mastered all current tasks. Which motivational strategy is most appropriate?

Assign the same routine tasks to reinforce mastery
Reduce their workload to prevent burnout
Provide stretch assignments or mentorship responsibilities to maintain engagement (Correct answer)
Transfer them to avoid disrupting team dynamics

Correct answer: Provide stretch assignments or mentorship responsibilities to maintain engagement

High performers remain engaged when given growth opportunities such as stretch projects or mentoring roles that challenge their abilities.

Question 93: Which AASM-required parameter must be documented in the PSG header for every sleep study?

Technician's home address
Patient date of birth and study date (Correct answer)
Insurance billing code only
Room temperature log

Correct answer: Patient date of birth and study date

AASM standards require that patient demographic information including date of birth and the study date appear in the PSG header.

Question 94: When an AASM-required 10-minute inter-scorer reliability check is performed, the acceptable minimum agreement for sleep staging is:

95%
60%
80% epoch-by-epoch agreement (Correct answer)
70%

Correct answer: 80% epoch-by-epoch agreement

AASM accreditation standards require a minimum of 80% epoch-by-epoch agreement between scorers on sleep staging during inter-scorer reliability assessments.

Question 95: How long should professional records typically be retained?

According to applicable laws, regulations, and organizational retention policies (Correct answer)
Until the filing cabinet is full
Only until the next audit is completed
For exactly one calendar year

Correct answer: According to applicable laws, regulations, and organizational retention policies

Record retention periods are determined by applicable laws, regulations, professional standards, and organizational policies, which vary by document type and jurisdiction.

Question 96: The STOP-BANG questionnaire is used in sleep medicine primarily to screen for which condition?

Restless legs syndrome severity
Obstructive sleep apnea risk stratification (Correct answer)
REM sleep behavior disorder likelihood
Narcolepsy and cataplexy risk

Correct answer: Obstructive sleep apnea risk stratification

STOP-BANG assesses eight risk factors (Snoring, Tired, Observed apneas, high blood Pressure, BMI >35, Age >50, Neck >40 cm, Gender male). A score ≥ 3 indicates high risk for OSA. It is widely used in preoperative and sleep clinic settings to triage patients for PSG.

Question 97: Body position during a PSG is most commonly recorded using:

Written notes taken every 15 minutes by the technician
Patient self-report at wake time
A position sensor whose data is embedded as a channel in the EDF/PSG file (Correct answer)
Video review only after the study

Correct answer: A position sensor whose data is embedded as a channel in the EDF/PSG file

A body position sensor channel synchronized with the recording allows precise correlation of position with respiratory events and sleep stages.

Question 98: A sleep center wants to reduce patient 'no-show' rates for overnight studies. Which QA approach is MOST systematic?

Analyze no-show data by day of week, referral source, and insurance type to identify patterns (Correct answer)
Call patients the day of the study as a reminder
Discharge patients who miss more than one appointment
Overbook appointments by 10% to compensate for no-shows

Correct answer: Analyze no-show data by day of week, referral source, and insurance type to identify patterns

Stratified data analysis reveals which variables most strongly predict no-shows, allowing targeted interventions rather than blanket workarounds.

Question 99: The AASM Manual requires that slow-wave sleep (N3) epochs be documented when slow waves occupy at least what percentage of the epoch?

10%
50%
75%
20% (Correct answer)

Correct answer: 20%

Per AASM rules, N3 is scored when 20% or more of the epoch contains slow waves (≥75 µV peak-to-peak, 0.5–2 Hz).

Question 100: What is the proper way to correct an error in professional documentation?

Draw a single line through the error, initial, date, and write the correction (Correct answer)
Ignore the error if it seems minor
Use white-out to cover the error completely
Remove the page and create a new one

Correct answer: Draw a single line through the error, initial, date, and write the correction

Proper error correction involves drawing a single line through the error (so it remains readable), adding initials and date, and writing the correct information nearby.

Question 101: K-complexes are characteristic of which sleep stage?

Stage N2 (Correct answer)
Stage W
Stage N3
Stage N1

Correct answer: Stage N2

K-complexes are the defining EEG feature of Stage N2, appearing as sharp negative deflection followed by a positive component.

Question 102: Sleep spindles are generated primarily by thalamo-cortical circuits and are typically recorded at maximum amplitude over which scalp region?

Temporal (T3, T4)
Central (C3, C4) (Correct answer)
Occipital (O1, O2)
Frontal (Fp1, Fp2)

Correct answer: Central (C3, C4)

Sleep spindles are maximal over central scalp regions because of their thalamocortical origin projecting to sensorimotor cortex.

Question 103: What is the primary purpose of data analysis in professional practice?

To fulfill annual reporting requirements only
To transform raw data into actionable insights for decision-making (Correct answer)
To create complex charts for presentations
To justify decisions that have already been made

Correct answer: To transform raw data into actionable insights for decision-making

Data analysis transforms raw data into meaningful insights that inform evidence-based decision-making and strategic planning.

Question 104: What is the minimum duration a K-complex must meet to satisfy AASM scoring criteria?

0.5 seconds (Correct answer)
0.25 seconds
1.0 second
0.75 seconds

Correct answer: 0.5 seconds

AASM requires a K-complex to have a total duration of ≥0.5 seconds.

Question 105: The international 10-20 electrode placement system gets its name from what?

The 10 primary and 20 secondary electrode positions
The year it was established (1920) and updated (1960)
The 10% and 20% intervals measured between skull landmarks (Correct answer)
The 10 and 20 microamp calibration signals used

Correct answer: The 10% and 20% intervals measured between skull landmarks

Electrode positions are placed at 10% and 20% intervals between four skull landmarks (nasion, inion, and preauricular points).

Question 106: Which condition is characterized by an irresistible urge to move the legs, typically worse at rest and in the evening?

Restless legs syndrome (Correct answer)
Periodic limb movement disorder
Sleep-related leg cramps
REM sleep behavior disorder

Correct answer: Restless legs syndrome

Restless legs syndrome features an uncomfortable sensorimotor urge to move the legs that worsens at rest and is relieved by movement.

Question 107: What is the minimum preceding sleep duration required before an EEG frequency shift can be scored as an arousal per AASM rules?

30 seconds
15 seconds
10 seconds (Correct answer)
5 seconds

Correct answer: 10 seconds

AASM requires at least 10 seconds of stable sleep preceding the EEG frequency shift for it to qualify as a scoreable arousal.

Question 108: During a PSG study, the EEG suddenly shows a dramatic change in waveform morphology across all channels simultaneously. What is the most likely cause and the FIRST action to take?

Electrode artifact or a technical failure; check electrode impedances and connections (Correct answer)
The room lights are causing interference; dim them further
The patient is having a seizure; call emergency services
The patient has entered REM sleep; continue monitoring

Correct answer: Electrode artifact or a technical failure; check electrode impedances and connections

Simultaneous changes across all channels are almost always a technical artifact or equipment failure rather than a physiologic event, and should be verified technically first.

Question 109: Which eye movement feature distinguishes slow eye movements (SEMs) of N1 from the rapid eye movements of Stage R?

SEMs have sinusoidal waveforms lasting >500 ms; REMs have irregular bursts <500 ms (Correct answer)
SEMs are recorded on EEG; REMs are recorded on EMG
SEMs are conjugate; REMs are disconjugate
SEMs occur only during alpha activity; REMs occur during delta

Correct answer: SEMs have sinusoidal waveforms lasting >500 ms; REMs have irregular bursts <500 ms

SEMs are conjugate sinusoidal deflections with initial deflection lasting >500 ms, whereas REMs are irregular, sharply peaked conjugate movements with initial deflection <500 ms.

Question 110: Which surgical procedure for OSA works by repositioning both the maxilla and mandible anteriorly, creating the largest documented surgical increase in pharyngeal airway volume?

Hyoid suspension
Maxillomandibular advancement (MMA) (Correct answer)
Radiofrequency tongue base reduction
Uvulopalatopharyngoplasty (UPPP)

Correct answer: Maxillomandibular advancement (MMA)

Maxillomandibular advancement (MMA) surgically moves both jaws forward, expanding the entire upper airway from the retropalatal to the retroglossal level. It has the highest reported surgical success rate for OSA (approximately 86-90%) and produces the greatest increase in pharyngeal volume of any surgical option, but is more invasive than soft tissue procedures.

Question 111: Periodic limb movements of sleep (PLMS) are scored when individual limb movements last:

1–10 seconds
0.5–5 seconds
1–5 seconds
0.5–10 seconds (Correct answer)

Correct answer: 0.5–10 seconds

AASM criteria define individual PLMS as lasting 0.5–10 seconds, occurring in a series of ≥4 movements separated by 5–90 second intervals.

Question 112: In project management for sleep center expansion, a Gantt chart is PRIMARILY used to:

Calculate the return on investment for new equipment
Visualize task timelines, dependencies, and project milestones (Correct answer)
Track individual employee performance
Assign blame for project delays

Correct answer: Visualize task timelines, dependencies, and project milestones

A Gantt chart provides a visual timeline of project tasks, their durations, dependencies, and milestone dates.

Question 113: A technologist discovers that the previous technologist's night-shift documentation omitted a 4-minute period of oxygen desaturation below 80%. What is the most appropriate action?

Notify the supervising physician and ensure the event is added to the final record with proper documentation (Correct answer)
Ignore it since the study is already over
Discard the entire study and repeat it
Correct the record yourself without notification to avoid drawing attention to the error

Correct answer: Notify the supervising physician and ensure the event is added to the final record with proper documentation

Significant clinical events must be accurately documented in the medical record; the physician must be notified so the omission is corrected through proper channels.

Question 114: A pharmaceutical company offers an RPSGT a cash gift in exchange for recommending their sleep medication to patients. Accepting this gift would be:

Legal and ethical as long as it is disclosed to the employer
Acceptable if the medication is clinically effective
A conflict of interest and an ethical violation (Correct answer)
Permissible if the amount is under $50

Correct answer: A conflict of interest and an ethical violation

Accepting financial incentives from pharmaceutical companies in exchange for influencing patient care is a conflict of interest that violates professional ethics.

Question 115: The standard PSG epoch length used for manual sleep staging according to AASM rules is:

60 seconds
20 seconds
30 seconds (Correct answer)
5 seconds

Correct answer: 30 seconds

AASM scoring rules specify a standard epoch length of 30 seconds for sleep staging. Each epoch receives exactly one sleep stage designation (W, N1, N2, N3, or R). Thirty seconds was chosen to align with the traditional paper PSG speed of 10 mm/sec (which yields a 30-cm/page recording at that speed).

Question 116: Which quality management tool is used to identify the most significant factors in a dataset?

Organizational chart
Flow chart
Gantt chart
Pareto chart (80/20 rule) (Correct answer)

Correct answer: Pareto chart (80/20 rule)

A Pareto chart applies the 80/20 principle to identify the vital few factors that account for the majority of effects, helping prioritize improvement efforts.

Question 117: Which statistical concept helps distinguish between 'common cause' and 'special cause' variation in a sleep lab's PSG quality metrics?

Chi-square testing
Linear regression analysis
Mean absolute deviation
Statistical process control (SPC) charts (Correct answer)

Correct answer: Statistical process control (SPC) charts

SPC control charts use statistically derived control limits to identify whether variation in a metric is random (common cause) or due to a specific identifiable factor (special cause).

Question 118: During REM scoring, chin EMG tone must be:

Higher than Stage N2 baseline
At its lowest level of the night or lower than NREM baseline (Correct answer)
At least as high as the highest NREM EMG
Absent entirely with no muscle twitches

Correct answer: At its lowest level of the night or lower than NREM baseline

REM sleep requires chin EMG to be at its lowest level of the night, typically lower than any NREM stage, reflecting muscle atonia.

Question 119: Sleep efficiency is best defined as:

NREM time divided by TST × 100
TST divided by total recording time × 100
TST divided by time in bed × 100 (Correct answer)
REM time divided by total recording time

Correct answer: TST divided by time in bed × 100

Sleep efficiency = (TST ÷ time in bed) × 100, where time in bed runs from lights out to lights on.

Question 120: Why is data visualization important in professional reporting?

It is required by law in all professional fields
It is only used to make reports more colorful
It replaces the need for written analysis
It makes complex data more accessible and easier to understand quickly (Correct answer)

Correct answer: It makes complex data more accessible and easier to understand quickly

Data visualization transforms complex data sets into visual representations that make patterns, trends, and insights more immediately accessible and understandable to diverse audiences.

Question 121: Which of the following BEST describes the purpose of a pre-study health questionnaire in the context of risk management?

To assess the patient's sleep hygiene habits only
To gather data for marketing purposes
To determine the patient's insurance deductible
To identify contraindications, allergies, and medical conditions that may affect study safety (Correct answer)

Correct answer: To identify contraindications, allergies, and medical conditions that may affect study safety

The pre-study health questionnaire is a core risk screening tool that flags conditions requiring special precautions or physician notification before testing begins.

Question 122: Which PAP modality delivers a higher inspiratory pressure (IPAP) and a lower expiratory pressure (EPAP), making it useful for patients who struggle to exhale against CPAP pressure?

BiPAP/BPAP (bilevel positive airway pressure) (Correct answer)
ASV (adaptive servo-ventilation)
CPAP (continuous positive airway pressure)
APAP (auto-titrating positive airway pressure)

Correct answer: BiPAP/BPAP (bilevel positive airway pressure)

BiPAP delivers two distinct pressure levels: a higher IPAP during inhalation and a lower EPAP during exhalation. This pressure differential reduces the work of exhalation and is particularly useful for patients who are intolerant of fixed CPAP pressure or have hypoventilation disorders.

Question 123: A sleep center's policies must comply with CMS Conditions of Participation primarily to:

Qualify for Joint Commission deemed status only
Maintain AASM accreditation status
Satisfy state nursing board requirements
Receive Medicare and Medicaid reimbursement (Correct answer)

Correct answer: Receive Medicare and Medicaid reimbursement

CMS Conditions of Participation are requirements that healthcare providers must meet to participate in and receive payment from Medicare and Medicaid programs.

Question 124: Which metric is MOST useful for tracking the percentage of studies that meet AASM minimum technical standards?

Average lights-off time
Study adequacy rate (Correct answer)
Average technologist hours per study
Equipment downtime percentage

Correct answer: Study adequacy rate

Study adequacy rate directly measures the proportion of studies meeting minimum technical criteria, making it the primary QA metric for technical quality.

Question 125: In a bipolar EEG derivation, if the potential at electrode A is +50 µV and at electrode B is +20 µV, the recorded deflection will be:

+70 µV upward deflection
+30 µV deflection reflecting B minus A
No deflection because both are positive
+30 µV deflection reflecting A minus B (Correct answer)

Correct answer: +30 µV deflection reflecting A minus B

Bipolar recording subtracts the second electrode from the first (A − B), yielding +30 µV; the polarity convention determines deflection direction.

Question 126: A patient informs the RPSGT that they took an extra dose of their prescribed opioid pain medication before arriving for their sleep study. What is the most appropriate action?

Proceed with the study and note the extra dose in the medical record
Administer naloxone as a precaution
Notify the supervising physician or medical director before starting the study (Correct answer)
Cancel the study immediately without consulting anyone

Correct answer: Notify the supervising physician or medical director before starting the study

Altered medication dosing, especially with opioids, requires physician notification before proceeding because of significant risks to respiratory drive during sleep.

Question 127: The AASM requires that a board-certified sleep medicine physician provide what level of oversight for an accredited sleep center?

Medical direction with defined responsibilities for quality assurance and patient care (Correct answer)
Remote supervision via telemedicine is not permitted
Periodic consultation when problems arise
Annual review of equipment calibration records only

Correct answer: Medical direction with defined responsibilities for quality assurance and patient care

AASM accreditation requires a board-certified sleep medicine physician to serve as medical director with clear responsibilities for clinical oversight and quality assurance.

Question 128: What is the typical frequency range for sleep spindles used when scoring Stage N2?

4–7 Hz
8–10 Hz
11–16 Hz (Correct answer)
18–25 Hz

Correct answer: 11–16 Hz

Sleep spindles are defined as 11–16 Hz (typically 12–14 Hz) waxing-and-waning activity lasting ≥0.5 seconds.

Question 129: Which of the following best describes the RPSGT's role when communicating sleep study results to a patient?

Decline to answer any questions the patient has about the study
Provide a full diagnosis and treatment recommendations
Share raw data printouts and explain each waveform in detail
Inform the patient that results will be reviewed and communicated by the ordering physician (Correct answer)

Correct answer: Inform the patient that results will be reviewed and communicated by the ordering physician

RPSGTs are not licensed to diagnose; results must be communicated to patients by the interpreting physician.

Question 130: During REM sleep, which chin EMG finding is expected on a polysomnogram?

Rhythmic jaw clenching
Moderate activity with phasic bursts
High-amplitude tonic activity
Atonia with occasional phasic twitches (Correct answer)

Correct answer: Atonia with occasional phasic twitches

REM sleep is characterized by chin EMG atonia (the lowest amplitude relative to other stages) with occasional phasic muscle twitches.

Question 131: A patient on CPAP therapy reports significant aerophagia (air swallowing and bloating). Which intervention is most appropriate?

Increase CPAP pressure to reduce air leaks
Switch from nasal mask to a full-face mask
Add supplemental oxygen to the circuit
Reduce CPAP pressure or switch to BiPAP to lower mean airway pressure (Correct answer)

Correct answer: Reduce CPAP pressure or switch to BiPAP to lower mean airway pressure

Aerophagia occurs when pressurized air is inadvertently swallowed rather than entering the airway. Reducing pressure or switching to BiPAP (which has a lower mean pressure due to the lower EPAP) decreases the amount of air forced into the esophagus, alleviating the symptom.

Question 132: A patient with suspected REM sleep behavior disorder (RBD) is scheduled for a diagnostic PSG. What additional safety measure is MOST important during this study?

Placing the patient in a room with a high ceiling
Increasing the HEPA filter settings in the room
Asking the patient to sleep on their stomach
Padding the bed frame and ensuring the floor area around the bed is clear of hazards (Correct answer)

Correct answer: Padding the bed frame and ensuring the floor area around the bed is clear of hazards

RBD patients act out violent dreams during REM sleep and are at high risk for falling or injuring themselves on hard surfaces near the bed.

Question 133: During a CPAP titration study, a patient continues to have obstructive apneas at 10 cmH2O. What is the recommended next step according to AASM titration guidelines?

Apply supplemental oxygen at 2 L/min
Terminate the study and refer for surgical evaluation
Immediately switch the patient to BiPAP
Increase the CPAP pressure by 1-2 cmH2O and observe response (Correct answer)

Correct answer: Increase the CPAP pressure by 1-2 cmH2O and observe response

AASM guidelines recommend incremental pressure increases (1-2 cmH2O) during titration, waiting at least 5 minutes between adjustments to allow stabilization before escalating further. Switching to BiPAP or other interventions is premature without first optimizing CPAP pressure.

Question 134: The oxygen desaturation index (ODI) as measured during PSG typically counts events where SpO2 drops by at least:

4% from baseline (Correct answer)
2% from baseline
3% from baseline
5% from baseline

Correct answer: 4% from baseline

The most widely used definition of ODI counts SpO2 drops ≥4% from the preceding baseline, though some protocols use 3%.

Question 135: Which artifact is characterized by a 60 Hz sinusoidal pattern superimposed on PSG channels and is MOST commonly caused by:

Cardiac electrical artifact contaminating EEG
High electrode impedance at the mastoid reference
Patient movement near recording equipment
Alternating current (AC) electrical interference from nearby devices (Correct answer)

Correct answer: Alternating current (AC) electrical interference from nearby devices

60 Hz artifact (50 Hz outside North America) is caused by AC electrical interference from power lines, fluorescent lights, or nearby electrical devices.

Question 136: During a home sleep apnea test (HSAT), the patient log completed by the patient serves primarily to:

Document lights off/on times and any interruptions not captured by the device (Correct answer)
Replace the need for a technician-scored report
Record the patient's subjective AHI estimate
Provide insurance authorization data

Correct answer: Document lights off/on times and any interruptions not captured by the device

Because no technician is present, the patient log captures key timestamps and events (getting up, equipment problems) needed to interpret device data accurately.

Question 137: A lab adds a new HSAT device to its fleet. What QA step is MOST important before using the device on patients?

Inform the referring physicians of the new device
Update the lab's patient consent forms
Register the device with the state health department
Perform equipment validation testing against a known standard or concurrent PSG (Correct answer)

Correct answer: Perform equipment validation testing against a known standard or concurrent PSG

Validation testing confirms that the new device performs comparably to accepted standards, ensuring clinical validity before it is used for diagnostic purposes.

Question 138: A patient under 18 years old arrives for a sleep study. Whose written consent is typically required before beginning the study?

The patient's, because minors can consent to medical procedures
The referring physician alone
No consent is required for diagnostic studies
A parent or legal guardian, as minors generally cannot provide legal consent (Correct answer)

Correct answer: A parent or legal guardian, as minors generally cannot provide legal consent

Minors typically lack legal capacity to consent to medical procedures, so a parent or legal guardian must provide written consent.

Question 139: What is the importance of data validation in reporting?

It ensures accuracy and reliability of the information used for decisions (Correct answer)
It slows down the reporting process unnecessarily
It makes reports look more professional
It is only important for financial data

Correct answer: It ensures accuracy and reliability of the information used for decisions

Data validation ensures that the information used in reports and analysis is accurate, complete, and reliable, which is essential for sound decision-making.

Question 140: Upper airway resistance syndrome (UARS) differs from OSA primarily in that:

Arousals occur from increased respiratory effort without meeting apnea/hypopnea criteria (Correct answer)
It occurs exclusively during REM sleep
It always causes oxygen desaturations
It affects only pediatric patients

Correct answer: Arousals occur from increased respiratory effort without meeting apnea/hypopnea criteria

UARS is characterized by increased upper airway resistance causing EEG arousals and sleep fragmentation without meeting standard apnea or hypopnea scoring thresholds.

Question 141: Under AASM standards, how often should a sleep lab's quality improvement program formally review its outcome data?

At least quarterly (Correct answer)
Daily
Annually only
Monthly

Correct answer: At least quarterly

AASM accreditation requires that quality data be reviewed at least quarterly by the QA committee to ensure timely identification and response to problems.

Question 142: According to AASM scoring rules, what percentage of an epoch must consist of slow wave activity to score Stage N3?

≥10%
≥30%
≥50%
≥20% (Correct answer)

Correct answer: ≥20%

AASM rules require that ≥20% of the epoch consist of slow wave activity (0.5–2 Hz, >75 µV frontal) to score Stage N3.

Question 143: On a PSG report, WASO stands for:

Wake and slow-wave onset
Waveform analysis sleep output
Wake after sleep opportunity
Wake after sleep onset (Correct answer)

Correct answer: Wake after sleep onset

WASO (Wake After Sleep Onset) is the total wake time occurring between sleep onset and the final awakening.

Question 144: In PSG documentation, 'lights off' time refers to:

When the last NREM period ended
When the technician turned off the monitoring equipment
The time REM latency is calculated from
The clock time when the patient was instructed to attempt sleep (Correct answer)

Correct answer: The clock time when the patient was instructed to attempt sleep

Lights off is the standardized start of the sleep opportunity period, and all latency measures (sleep onset, REM) are calculated from this reference point.

Question 145: What is the minimum number of continuing education credits an RPSGT must earn per recertification cycle?

50 CECs
20 CECs
30 CECs (Correct answer)
10 CECs

Correct answer: 30 CECs

The BRPT requires 30 continuing education credits per 5-year recertification cycle to maintain the RPSGT credential.

Question 146: Positional obstructive sleep apnea is defined by AASM as an AHI that is at least how much higher in the supine position compared to non-supine sleep?

At least twice as high (≥2×) in the supine versus non-supine position (Correct answer)
50% higher in the supine position
10% higher in the supine position
Any documented difference qualifies as positional OSA

Correct answer: At least twice as high (≥2×) in the supine versus non-supine position

Positional OSA is defined as a supine AHI that is at least twice the non-supine AHI, with the non-supine AHI being ≤ 5 events/hour (some definitions require non-supine AHI < 5 to be truly positional). Patients with positional OSA may respond to positional therapy (devices that prevent supine sleep) as a primary or adjunct treatment.

Question 147: A sleep lab's QA program identifies that split-night study conversion criteria are inconsistently applied by different technologists. What is the MOST appropriate corrective document to create?

A revised scoring rule set for split-night studies
A standardized split-night conversion protocol with clear, objective criteria and a decision flowchart (Correct answer)
A new patient consent form specific to split-night studies
An equipment maintenance checklist for CPAP titration systems

Correct answer: A standardized split-night conversion protocol with clear, objective criteria and a decision flowchart

A standardized protocol with objective criteria and a decision flowchart removes ambiguity and ensures all technologists apply the same decision logic for split-night conversion.

Question 148: During REM sleep, which EEG pattern is characteristically observed?

Alpha waves at 8-13 Hz
Sleep spindles and K-complexes
Mixed-frequency, low-amplitude activity (Correct answer)
High-amplitude delta waves

Correct answer: Mixed-frequency, low-amplitude activity

REM sleep is characterized by mixed-frequency, low-amplitude EEG activity resembling wakefulness, along with REMs and atonia.

Question 149: A technician documents 'alpha intrusion' in the comments. This finding refers to:

Alpha frequency activity (8–13 Hz) appearing during NREM sleep stages (Correct answer)
Alpha waves present only during REM sleep
Alpha bursts associated with K-complexes
Alpha activity confirming full wakefulness

Correct answer: Alpha frequency activity (8–13 Hz) appearing during NREM sleep stages

Alpha intrusion is the appearance of alpha rhythms during NREM sleep, often seen in chronic pain or fibromyalgia patients and is clinically noteworthy.

Question 150: Mandibular advancement devices (MADs) treat obstructive sleep apnea through which primary mechanism?

Repositioning the mandible and tongue anteriorly to increase retropalatal and retroglossal airway dimensions (Correct answer)
Applying negative pressure to the oropharynx to prevent collapse
Stimulating hypoglossal nerve activity to stiffen the tongue
Delivering positive pressure to pneumatically splint the upper airway open

Correct answer: Repositioning the mandible and tongue anteriorly to increase retropalatal and retroglossal airway dimensions

MADs hold the lower jaw (mandible) in a forward position during sleep, which secondarily advances the tongue base and tenses the pharyngeal walls, increasing the cross-sectional area of the upper airway. They are a guideline-recommended alternative to CPAP, particularly for patients with mild-to-moderate OSA or those intolerant of PAP.

Question 151: A sleep technologist who administers a home sleep apnea test (HSAT) must ensure that the device used has received which regulatory clearance?

CMS Durable Medical Equipment (DME) certification only
FDA 510(k) clearance or approval as a medical device (Correct answer)
EPA environmental safety certification
AASM Technical Specifications Seal

Correct answer: FDA 510(k) clearance or approval as a medical device

HSAT devices are classified as medical devices and must receive FDA 510(k) clearance or approval before clinical use.

Question 152: When a sleep lab sends PSG data to a third-party scoring service, under HIPAA the scoring service is classified as a:

Covered Entity
Business Associate (Correct answer)
Workforce Member
Hybrid Entity

Correct answer: Business Associate

A third-party vendor that performs services involving PHI on behalf of a covered entity is classified as a Business Associate and must sign a Business Associate Agreement.

Question 153: Why is continuous improvement important in quality management?

Because existing processes are always fundamentally flawed
Because employees need new tasks to stay busy
Because standards evolve, competitors improve, and customer expectations change (Correct answer)
Because regulators demand changes every year

Correct answer: Because standards evolve, competitors improve, and customer expectations change

Continuous improvement is essential because the competitive landscape, customer expectations, and industry standards are constantly evolving, requiring ongoing adaptation.

Question 154: When a patient removes their own electrode during the night, the technician should document:

Nothing, as minor events are excluded from the report
The time of removal, electrode affected, and corrective action taken (Correct answer)
The event in the patient's medical history only
Only the corrective action in the billing notes

Correct answer: The time of removal, electrode affected, and corrective action taken

Any patient-initiated electrode removal must be noted in the technician comments with time, electrode site, and what was done to correct it.

Question 155: Which feature on PSG distinguishes central sleep apnea from obstructive sleep apnea during an apnea event?

Duration of the apnea exceeding 20 seconds
Occurrence exclusively during REM sleep
Oxygen desaturation nadir below 85%
Absence of respiratory effort on thoracic and abdominal channels during airflow cessation (Correct answer)

Correct answer: Absence of respiratory effort on thoracic and abdominal channels during airflow cessation

Central apneas are scored when both respiratory effort channels (thoracic and abdominal) show absent effort throughout the entire airflow cessation, unlike obstructive events which maintain effort.

Question 156: Which neurotransmitter deficit is central to the pathophysiology of narcolepsy type 1?

GABA
Hypocretin (orexin) (Correct answer)
Serotonin
Dopamine

Correct answer: Hypocretin (orexin)

Narcolepsy type 1 results from autoimmune destruction of hypothalamic neurons producing hypocretin (orexin), a wake-promoting neuropeptide.

Question 157: A polysomnography supervisor is developing staffing schedules. Which factor should take highest priority?

Minimizing staff preferences to reduce scheduling complexity
Rotating all staff equally regardless of competency levels
Ensuring adequate coverage to meet patient safety and accreditation requirements (Correct answer)
Scheduling based solely on seniority

Correct answer: Ensuring adequate coverage to meet patient safety and accreditation requirements

Patient safety and regulatory/accreditation staffing requirements must always be the primary driver of scheduling decisions.

Question 158: During a study, a patient becomes agitated and physically threatens the technologist. The first priority should be:

Completing the study regardless of patient behavior
Immediately discharging the patient without documentation
Ensuring safety for both the patient and staff, then following facility protocol (Correct answer)
Physically restraining the patient to protect equipment

Correct answer: Ensuring safety for both the patient and staff, then following facility protocol

Safety of both patients and staff is always the top priority; technologists should follow facility emergency and de-escalation protocols.

Question 159: Which of the following scenarios represents a HIPAA breach?

Discussing a patient's care with a consulting physician treating that patient
Documenting care in a secured electronic health record
Accessing a patient's chart when assigned to their care
Emailing unencrypted patient records to an unauthorized third party (Correct answer)

Correct answer: Emailing unencrypted patient records to an unauthorized third party

Sending unencrypted PHI to an unauthorized recipient is a HIPAA breach regardless of intent.

Question 160: Which sleep architecture change is most commonly reported in patients with severe OSA?

Increased Stage N3 percentage
Increased sleep spindle density
Increased REM latency and suppressed REM percentage (Correct answer)
Decreased sleep onset latency

Correct answer: Increased REM latency and suppressed REM percentage

Severe OSA typically fragments sleep and suppresses REM sleep, resulting in prolonged REM latency and reduced REM percentage.

Question 161: An 'out of bed' period must be documented in the sleep log because it affects the calculation of:

Total sleep time and sleep efficiency (Correct answer)
REM latency only
SpO2 nadir
AHI only

Correct answer: Total sleep time and sleep efficiency

Out-of-bed periods reduce time in bed and must be accurately documented to prevent incorrect inflation of total sleep time and sleep efficiency.

Question 162: Which benchmark is used by the AASM to define the minimum acceptable total sleep time (TST) for a technically adequate diagnostic PSG?

At least 6 hours of total sleep time
At least 3 hours of total sleep time
At least 4 hours of total sleep time
At least 2 hours of total sleep time (Correct answer)

Correct answer: At least 2 hours of total sleep time

The AASM specifies that a diagnostic PSG should capture at least 2 hours of total sleep time to be considered technically adequate for scoring.

Question 163: A patient undergoing a Multiple Sleep Latency Test (MSLT) falls asleep between naps in a hallway chair. What is the MOST important risk management concern?

The patient may miss the scheduled nap window
The patient is at risk for a fall from a non-secured sleeping position in an unsupervised area (Correct answer)
The nap may invalidate the MSLT data
The hallway lighting may affect the patient's melatonin levels

Correct answer: The patient is at risk for a fall from a non-secured sleeping position in an unsupervised area

Patients undergoing MSLT are profoundly sleepy and must be supervised to prevent injury from falling asleep in unsafe, unsecured environments.

Question 164: Adaptive servo-ventilation (ASV) is contraindicated in which specific patient population, based on the findings of the SERVE-HF clinical trial?

Patients with heart failure with reduced ejection fraction (EF < 45%) and predominant central sleep apnea (Correct answer)
Patients with REM-predominant obstructive sleep apnea
Elderly patients with complex sleep apnea over age 70
Patients with obesity hypoventilation syndrome and hypercapnia

Correct answer: Patients with heart failure with reduced ejection fraction (EF < 45%) and predominant central sleep apnea

The SERVE-HF trial (2015) demonstrated significantly increased cardiovascular mortality with ASV in patients with heart failure with reduced ejection fraction (LVEF < 45%) who had predominant central sleep apnea. ASV is therefore contraindicated in this population. This is a critical safety contraindication that all sleep technologists must know.

Question 165: Which AASM-defined arousal criterion requires a minimum duration of EEG frequency shift?

10 seconds
5 seconds
3 seconds (Correct answer)
1 second

Correct answer: 3 seconds

AASM rules require an EEG frequency shift lasting at least 3 seconds to qualify as an arousal.

Question 166: State licensure laws for polysomnographic technologists are primarily governed by:

CMS through Medicare conditions
The BRPT at the federal level
Individual state legislatures and licensing boards (Correct answer)
The AASM accreditation body

Correct answer: Individual state legislatures and licensing boards

Polysomnographic technologist licensure is regulated at the state level, and requirements vary significantly from state to state.

Question 167: Which criterion best distinguishes idiopathic hypersomnia from narcolepsy type 1 on MSLT?

Mean sleep latency under 8 minutes with fewer than 2 SOREMPs (Correct answer)
Mean sleep latency under 8 minutes with no SOREMPs
Mean sleep latency over 10 minutes with 1 SOREMP
Mean sleep latency under 5 minutes with 3 or more SOREMPs

Correct answer: Mean sleep latency under 8 minutes with fewer than 2 SOREMPs

Idiopathic hypersomnia shows a mean sleep latency ≤8 minutes on MSLT with fewer than 2 sleep-onset REM periods, distinguishing it from narcolepsy which requires ≥2 SOREMPs.

Question 168: Which pre-study instruction should a patient be given before an overnight diagnostic PSG to avoid compromising the study results?

Take a sleeping pill the night before to ensure adequate sleep
Consume a large meal within one hour of the study start time
Exercise vigorously in the afternoon to promote deeper sleep
Avoid caffeine and napping on the day of the study (Correct answer)

Correct answer: Avoid caffeine and napping on the day of the study

Caffeine is a stimulant that delays sleep onset and reduces total sleep time and N3 sleep, all of which can confound PSG results. Napping reduces sleep pressure, making it harder to fall asleep during the study. Patients are typically instructed to avoid caffeine after noon and refrain from napping on the day of the study.

Question 169: What infection control measure is required between patients for reusable PSG electrodes?

Wipe with 70% isopropyl alcohol only
High-level disinfection or sterilization per manufacturer guidelines (Correct answer)
Rinse under running water for 2 minutes
Soak in saline solution for 10 minutes

Correct answer: High-level disinfection or sterilization per manufacturer guidelines

Reusable electrodes that contact intact skin require at minimum high-level disinfection (or sterilization) following manufacturer guidelines and facility infection control policies.

Question 170: An RPSGT who witnesses a patient in respiratory distress during a study should:

Document the event and continue monitoring without intervention
Initiate emergency response protocols immediately (Correct answer)
Wait for the physician to return in the morning to assess the patient
End the study and ask the patient to leave

Correct answer: Initiate emergency response protocols immediately

Life-threatening situations require immediate activation of emergency protocols; patient safety always supersedes study completion.

Question 171: A sleep center wants to improve its patient throughput without adding staff. Which lean process improvement tool is MOST directly applicable?

Value stream mapping to identify and eliminate non-value-added steps (Correct answer)
SWOT analysis for competitive positioning
Balanced scorecard for long-term strategy tracking
Fishbone (Ishikawa) diagram for root cause analysis only

Correct answer: Value stream mapping to identify and eliminate non-value-added steps

Value stream mapping visualizes each step in a patient's journey to identify and eliminate waste, improving throughput without additional staffing.

Question 172: The False Claims Act (FCA) is relevant to sleep centers because it prohibits:

Falsely advertising sleep study outcomes to patients
Failing to disclose adverse events to the FDA
Misrepresenting a technologist's credentials to state boards
Submitting fraudulent claims for payment to federal healthcare programs like Medicare (Correct answer)

Correct answer: Submitting fraudulent claims for payment to federal healthcare programs like Medicare

The False Claims Act imposes liability on entities that knowingly submit false or fraudulent claims for payment to federal programs such as Medicare and Medicaid.

Question 173: An RPSGT supervisor must address a situation where a staff member refuses to follow a new infection control protocol. What is the most appropriate initial response?

Immediately escalate to termination proceedings
Allow the staff member to continue their old practice until they feel comfortable
Ignore the refusal if the staff member is otherwise high-performing
Have a direct conversation to understand the resistance and reinforce the rationale and mandatory nature of the policy (Correct answer)

Correct answer: Have a direct conversation to understand the resistance and reinforce the rationale and mandatory nature of the policy

Understanding the reason for resistance while clearly communicating that compliance is non-negotiable is the first step before escalating discipline.

Question 174: What is the purpose of a technology needs assessment?

To purchase the most expensive available solution
To justify the IT department's budget
To replace all manual processes immediately
To identify gaps between current capabilities and desired outcomes (Correct answer)

Correct answer: To identify gaps between current capabilities and desired outcomes

A technology needs assessment systematically identifies gaps between current technological capabilities and desired outcomes, guiding informed technology investment decisions.

Question 175: What is the inter-scorer reliability statistic most commonly used to evaluate PSG staging agreement?

Intraclass correlation coefficient
Pearson correlation coefficient
Spearman rho
Cohen's kappa (Correct answer)

Correct answer: Cohen's kappa

Cohen's kappa is the standard statistic for measuring inter-rater agreement on categorical sleep stage scores.

RPSGT (Registered Polysomnographic Technologist) Exam

The RPSGT exam is administered by the Board of Registered Polysomnographic Technologists (BRPT). It consists of 175 multiple-choice questions (150 scored, 25 unscored pretest items) with a 3-hour time limit. A scaled passing score of 350 out of 500 is required. The exam covers four content domains: Clinical Overview, Education, and Patient Support (17.3%); Sleep Study Preparation and Performance (29.3%); Scoring, Reporting, and Data Verification (25.3%); and Therapeutic Treatment and Intervention (28%).

175

Questions

180 min

Time Limit

70%

To Pass

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