CPSGT Positive Airway Pressure Therapy & Treatment Modalities 3

Question 1

What is the primary difference between standard BiPAP and BiPAP-ST (Spontaneous-Timed) mode?

Accepted Answer

BiPAP-ST includes a backup respiratory rate to ensure a minimum breathing frequency

Answer

BiPAP-ST delivers higher maximum pressures than standard BiPAP

Answer

BiPAP-ST requires use of a full face mask interface

Answer

BiPAP-ST is approved only for pediatric use

Question 2

During PAP titration, when the technologist observes persistent large mask leak, what is the most appropriate first response?

Accepted Answer

Refit or readjust the mask to achieve a proper seal

Answer

Increase therapy pressure to overcome the leak

Answer

Decrease therapy pressure to reduce leak

Answer

Wake the patient immediately and restart the study

Question 3

What is the AASM-recommended residual AHI goal that defines a successful CPAP titration?

Accepted Answer

Less than 5 events per hour

Answer

Less than 10 events per hour

Answer

Less than 15 events per hour

Answer

Less than 20 events per hour

Question 4

Heated humidification added to PAP therapy primarily benefits patients by:

Accepted Answer

Decreasing nasal dryness and congestion to improve comfort and adherence

Answer

Reducing the risk of device-associated infection

Answer

Increasing the delivered oxygen concentration

Answer

Preventing rainout condensation inside the tubing

Question 5

Which condition may paradoxically emerge or worsen when a patient with OSA is treated with CPAP, resulting in new or persistent central apneas?

Accepted Answer

Complex (treatment-emergent) sleep apnea syndrome

Answer

Primary central sleep apnea

Answer

Obesity hypoventilation syndrome

Answer

Restless legs syndrome

Question 6

In APAP devices, which combination of detected events typically triggers a pressure increase algorithm?

Accepted Answer

Apneas, hypopneas, snoring, and flow limitation

Answer

Snoring alone

Answer

Oxygen desaturation events only

Answer

Arousals and patient movement

Question 7

What is the purpose of 'expiratory pressure relief' technology (marketed as EPR, C-Flex, or A-Flex) on PAP devices?

Accepted Answer

To lower pressure transiently during exhalation, improving comfort without compromising therapy

Answer

To reduce inspiratory pressure for patients with weak respiratory muscles

Answer

To automatically adjust for changes in altitude during travel

Answer

To prevent pressure spikes from occurring during REM sleep