Certified Paramedic Response (CPR) Examination — Questions and Answers

Question 1: What should a paramedic do if the patient is in shock?

Keep warm, elevate legs, and administer fluids (Correct answer)
Monitor the patient without taking action
Move the patient quickly
Wait for medical assistance

Correct answer: Keep warm, elevate legs, and administer fluids

Shock is a life-threatening condition where the body isn't getting enough blood flow, leading to inadequate oxygen delivery to tissues and organs. Paramedic management focuses on improving circulation and perfusion. Keeping the patient warm prevents hypothermia, elevating the legs can help return blood to the core, and administering intravenous fluids helps increase circulating blood volume, all aimed at stabilizing the patient.

Question 2: A patient presents in anaphylaxis with respiratory distress and stridor. Epinephrine 1:1,000 has been administered IM. If stridor persists, what is the NEXT priority airway intervention?

Perform nasotracheal intubation immediately
Administer nebulized albuterol as first priority
Administer a second dose of diphenhydramine
Prepare for surgical cricothyrotomy if airway obstruction worsens (Correct answer)

Correct answer: Prepare for surgical cricothyrotomy if airway obstruction worsens

Persistent stridor after epinephrine in anaphylaxis indicates severe upper airway edema, and the paramedic must be prepared for a surgical airway if obstruction progresses.

Question 3: A patient's ECG shows a QRS complex of 0.14 seconds with a right bundle branch block morphology and a rate of 180 bpm with no visible P waves. What rhythm should you suspect?

Torsades de pointes
Ventricular tachycardia (Correct answer)
Accelerated idioventricular rhythm
Supraventricular tachycardia with aberrancy

Correct answer: Ventricular tachycardia

A wide-complex tachycardia at 180 bpm without visible P waves is ventricular tachycardia until proven otherwise, even if RBBB morphology is present.

Question 4: Which of the following BEST describes debriefing after a resuscitation attempt?

A mandatory psychological evaluation
A structured team discussion to identify what went well and opportunities for improvement (Correct answer)
A formal disciplinary review of team errors
A legal documentation process

Correct answer: A structured team discussion to identify what went well and opportunities for improvement

Post-event debriefing improves future performance by reinforcing successes and collaboratively addressing gaps in a blame-free environment.

Question 5: When using a commercial junctional tourniquet (e.g., SAM-JT or CRoC) for groin hemorrhage, what is a critical application consideration?

It is applied distal to the wound site
It should only be applied over clothing for patient comfort
It must be positioned to compress the femoral vessels against the pelvis (Correct answer)
It can only be used in the hospital setting

Correct answer: It must be positioned to compress the femoral vessels against the pelvis

Junctional tourniquets must be positioned to compress the femoral artery against the bony pelvis to achieve effective hemorrhage control.

Question 6: What is the recommended dose of vasopressin that may be used as an alternative to the first or second dose of epinephrine in cardiac arrest?

20 units IV/IO
80 units IV/IO
60 units IV/IO
40 units IV/IO (Correct answer)

Correct answer: 40 units IV/IO

Vasopressin 40 units IV/IO may replace the first or second dose of epinephrine in cardiac arrest per older AHA guidelines.

Question 7: You are performing transcutaneous pacing (TCP) on a patient with symptomatic bradycardia. After achieving electrical capture on the monitor, what is the most critical next step to ensure the therapy is effective?

Increase the pacing rate to 80 beats per minute.
Document the millamperage (mA) setting.
Confirm mechanical capture by palpating a pulse. (Correct answer)
Administer sedation for patient comfort.

Correct answer: Confirm mechanical capture by palpating a pulse.

While electrical capture (a pacer spike followed by a QRS complex) is necessary, it does not guarantee the heart is actually contracting and producing a pulse. The paramedic must confirm mechanical capture by palpating a central pulse (like the femoral) or observing an improved blood pressure. This ensures the electrical stimulation is resulting in effective cardiac output.

Question 8: During the resuscitation of a newborn, the baby remains apneic with a heart rate of 45 beats per minute despite effective positive-pressure ventilation. Which of the following is the most appropriate next step?

Administer a fluid bolus of 20 mL/kg.
Administer atropine 0.02 mg/kg.
Begin chest compressions. (Correct answer)
Intubate immediately.

Correct answer: Begin chest compressions.

According to the Neonatal Resuscitation Program (NRP) guidelines, if a newborn's heart rate is below 60 bpm despite 30 seconds of effective positive-pressure ventilation, chest compressions should be initiated. Compressions should be coordinated with ventilations at a 3:1 ratio.

Question 9: A patient with an implanted pacemaker goes into pulseless ventricular tachycardia. The paramedic should:

Avoid defibrillation as it could damage the pacemaker
Only use transcutaneous pacing
Defibrillate but place pads at least 8 cm away from the device (Correct answer)
Deliver a precordial thump and reassess

Correct answer: Defibrillate but place pads at least 8 cm away from the device

Defibrillation should not be withheld in pulseless VT; pads should be placed at least 8 cm from the pacemaker generator to avoid device damage while still delivering effective therapy.

Question 10: Which intervention is indicated if a patient's ETCO2 is consistently above 60 mmHg during BVM ventilation?

Switch immediately to 100% O2 without positive pressure
Administer sodium bicarbonate IV
Decrease ventilation rate to allow CO2 to normalize
Increase ventilation rate to eliminate excess CO2 (Correct answer)

Correct answer: Increase ventilation rate to eliminate excess CO2

ETCO2 above 60 mmHg indicates hypoventilation and CO2 retention; increasing ventilation rate will lower CO2 levels toward the normal range of 35-45 mmHg.

Question 11: What is the primary intervention for a patient with a collapsed lung?

Administer oxygen
Transport immediately
Provide pain relief
Decompress with a needle or chest tube (Correct answer)

Correct answer: Decompress with a needle or chest tube

A collapsed lung (pneumothorax) occurs when air leaks into the space between the lung and chest wall, putting pressure on the lung and preventing it from expanding. Decompression with a needle (needle thoracostomy) or insertion of a chest tube is the primary intervention to release this trapped air, allowing the lung to re-expand and restore normal breathing. This immediate action is critical to prevent life-threatening respiratory distress and circulatory compromise.

Question 12: What term describes the minimum current needed to reliably capture the myocardium during transcutaneous pacing?

Defibrillation threshold
Pacing impedance
Capture threshold (Correct answer)
Threshold current

Correct answer: Capture threshold

Capture threshold is the minimum milliamp output needed to consistently depolarize the myocardium and produce a mechanical response.

Question 13: What is the primary mechanism by which activated charcoal reduces toxin absorption in the GI tract?

Inducing emesis to expel the substance
Adsorption of toxins to prevent absorption (Correct answer)
Chemical neutralization of the poison
Enzymatic breakdown of the toxin

Correct answer: Adsorption of toxins to prevent absorption

Activated charcoal works by adsorbing (binding) toxins in the GI tract to its large surface area, preventing their absorption into the bloodstream without altering the substance chemically.

Question 14: A paramedic is analyzing an ECG strip of a 68-year-old male complaining of dizziness. The strip shows a ventricular rate of 40 bpm, a regular rhythm, P waves that are not associated with any QRS complexes, and narrow QRS complexes. Which rhythm is most likely represented on this ECG?

Atrial Fibrillation with a slow ventricular response
Third-Degree (Complete) AV Block (Correct answer)
Second-Degree AV Block, Type I
Sinus Bradycardia

Correct answer: Third-Degree (Complete) AV Block

Third-Degree AV Block is characterized by a complete dissociation between atrial and ventricular activity. The P waves (atrial depolarizations) occur at their own regular rate, while the QRS complexes (ventricular depolarizations) occur at a separate, slower, regular escape rate. There is no consistent PR interval because the atria and ventricles are not communicating electrically.

Question 15: A patient presents with miosis, bradycardia, bronchospasm, and excessive secretions after unknown substance ingestion. Which toxidrome does this represent?

Cholinergic (Correct answer)
Sympathomimetic
Sedative-hypnotic
Anticholinergic

Correct answer: Cholinergic

Cholinergic toxidrome (SLUDGE/DUMBELS) presents with miosis, bradycardia, bronchospasm, and excessive secretions, typically from organophosphate or carbamate exposure.

Question 16: A patient requires spinal motion restriction on a long backboard. After securing the torso, the head is immobilized:

Simultaneously with torso straps
Before securing the torso to prevent movement
Last, after torso and legs are secured (Correct answer)
Only if the patient is unconscious

Correct answer: Last, after torso and legs are secured

When applying a long backboard, the torso is secured first, then the legs, and finally the head, because securing the torso first prevents the patient from sliding and allows head blocks to hold securely.

Question 17: When preparing for electrical therapy, which of the following safety precautions is essential to prevent arcing and ensure effective energy delivery?

Placing pads directly over an implanted pacemaker to capture it.
Ensuring the patient's chest is clean and dry. (Correct answer)
Using a smaller pad size for better skin contact.
Applying the pads over a transdermal medication patch.

Correct answer: Ensuring the patient's chest is clean and dry.

Moisture (like sweat or water) on the chest can cause the electrical current to travel across the skin surface (arc) instead of through the heart, resulting in an ineffective shock and potential skin burns. Therefore, wiping the chest dry is a critical safety and efficacy step. Pads should not be placed over medication patches or implanted devices.

Question 18: Which of the following is a primary, potentially reversible cause of traumatic cardiac arrest that a paramedic should immediately address with a specific procedural intervention in the field?

Massive intracranial hemorrhage
Tension pneumothorax (Correct answer)
Aortic transection
Severe abdominal evisceration

Correct answer: Tension pneumothorax

In traumatic cardiac arrest (TCA), the focus is on treating reversible causes, often remembered by mnemonics like HOTT (Hypovolemia, Oxygenation, Tension pneumothorax, Tamponade). A tension pneumothorax is a life-threatening condition that can be rapidly treated in the prehospital setting by performing a needle decompression (thoracostomy), potentially restoring circulation. The other conditions listed are not directly reversible with a specific paramedic procedure in the field.

Question 19: During a cardiac arrest secondary to tricyclic antidepressant overdose, which drug is the treatment of choice to reverse cardiotoxicity?

Sodium bicarbonate (Correct answer)
Calcium gluconate
Naloxone
Flumazenil

Correct answer: Sodium bicarbonate

Sodium bicarbonate alkalinizes the blood and reverses TCA-induced sodium channel blockade, narrowing the QRS and improving myocardial function.

Question 20: A patient in cardiac arrest has ECG showing organized electrical activity but no palpable pulse. Which rhythm is present?

Fine ventricular fibrillation
Pulseless electrical activity (Correct answer)
Asystole
Ventricular fibrillation

Correct answer: Pulseless electrical activity

Pulseless electrical activity (PEA) is defined as organized cardiac electrical activity on ECG without a palpable pulse.

Question 21: When using a bag-valve-mask (BVM) on an adult, what tidal volume should each ventilation deliver?

200-300 mL
1200-1500 mL
500-600 mL (Correct answer)
800-1000 mL

Correct answer: 500-600 mL

Adult BVM ventilation should deliver approximately 500-600 mL tidal volume to produce visible chest rise without causing gastric inflation.

Question 22: Which of the following SpO2 values would indicate the NEED for supplemental oxygen in a patient with COPD per current evidence-based guidelines?

SpO2 91–94%
SpO2 < 88% (Correct answer)
SpO2 > 95%
SpO2 89–90%

Correct answer: SpO2 < 88%

Supplemental oxygen is indicated in COPD patients when SpO2 drops below 88% to target a safe range of 88–92% and avoid hypoxic drive suppression.

Question 23: When applying a tourniquet for extremity hemorrhage, how far above the wound should it be placed?

2-3 inches proximal to the wound (Correct answer)
At the axilla or groin regardless of wound location
Directly over the wound
1-2 inches proximal to the wound

Correct answer: 2-3 inches proximal to the wound

Tourniquets should be applied 2-3 inches proximal to the wound to effectively occlude arterial flow while allowing room for placement and tightening.

Question 24: Which of the following correctly describes the function of a one-way flutter valve (e.g., Heimlich valve) used for chest decompression?

It allows air to enter the chest during inspiration only
It regulates oxygen flow to the patient during transport
It prevents blood from entering the pleural space
It allows air to exit the pleural space during exhalation and prevents re-entry (Correct answer)

Correct answer: It allows air to exit the pleural space during exhalation and prevents re-entry

A flutter valve allows trapped air to escape the pleural space during exhalation while its one-way design prevents atmospheric air from re-entering.

Question 25: Following a difficult and unsuccessful resuscitation attempt, which action by the team leader best fosters a culture of safety and continuous improvement?

Conducting a brief, non-judgmental 'hot debrief' to discuss team performance and identify learning points. (Correct answer)
Providing positive feedback only, to avoid discouraging the team.
Immediately identifying team members who made mistakes.
Documenting the event and quickly moving to the next task without discussion.

Correct answer: Conducting a brief, non-judgmental 'hot debrief' to discuss team performance and identify learning points.

A post-event debriefing is crucial for team learning. A 'hot debrief' held shortly after the event allows the team to discuss what went well and what could be improved in a safe, non-judgmental environment. This practice improves future performance and supports the team's emotional well-being.

Question 26: A 65-year-old male has achieved ROSC after a VF arrest. His initial blood pressure is 78/40 mmHg and he has an advanced airway in place. What is the most appropriate initial intervention to manage his hypotension?

Administer a 1-2 liter bolus of isotonic crystalloid. (Correct answer)
Administer 1 mg of epinephrine IV push.
Immediately initiate a norepinephrine infusion.
Perform synchronized cardioversion at 100J.

Correct answer: Administer a 1-2 liter bolus of isotonic crystalloid.

The immediate priority in post-ROSC hypotension is to correct potential hypovolemia. An isotonic crystalloid bolus is the first-line treatment. If hypotension persists after fluid administration, vasopressor therapy is then indicated to maintain a systolic blood pressure >90 mmHg or a mean arterial pressure >65 mmHg.

Question 27: A patient presents with hyperthermia, tachycardia, hypertension, agitation, diaphoresis, and dilated pupils after using a stimulant. Which toxidrome is this?

Anticholinergic
Opioid
Cholinergic
Sympathomimetic (Correct answer)

Correct answer: Sympathomimetic

Stimulants such as cocaine and amphetamines cause sympathomimetic toxidrome featuring hyperthermia, tachycardia, hypertension, agitation, diaphoresis, and mydriasis.

Question 28: Which waveform finding on a 12-lead ECG is most consistent with a STEMI in leads II, III, and aVF?

New LBBB in those leads
ST elevation in those leads indicating inferior MI (Correct answer)
ST depression in those leads indicating ischemia
Inverted P waves in those leads

Correct answer: ST elevation in those leads indicating inferior MI

ST elevation in leads II, III, and aVF reflects current of injury in the inferior wall, classically caused by right coronary artery occlusion (inferior STEMI).

Question 29: What is the purpose of evaluating a patient's level of consciousness?

To monitor pain levels
To measure heart rate
To monitor blood flow
To assess neurological function and guide treatment (Correct answer)

Correct answer: To assess neurological function and guide treatment

Evaluating a patient's level of consciousness (LOC) provides vital information about their brain function and overall neurological status. Changes in LOC can indicate serious conditions like head injury, stroke, shock, or metabolic imbalances. This assessment helps paramedics determine the severity of the patient's condition, anticipate potential deterioration, and guide appropriate interventions, such as airway management or fluid resuscitation.

Question 30: On a 12-lead ECG, ST elevation in leads II, III, and aVF with reciprocal depression in leads I and aVL suggests occlusion of which artery?

Left anterior descending artery
Left main coronary artery
Left circumflex artery
Right coronary artery (Correct answer)

Correct answer: Right coronary artery

Inferior STEMI (ST elevation in II, III, aVF) with reciprocal lateral changes is most commonly caused by right coronary artery occlusion.

Question 31: You are dispatched to a 72-year-old female patient complaining of palpitations and shortness of breath. The cardiac monitor displays a narrow-complex tachycardia at a rate of 170 bpm with a regular rhythm. P waves are not clearly identifiable. Which of the following is the most likely interpretation of this rhythm?

Sinus Tachycardia
Ventricular Tachycardia
Atrial Fibrillation
Supraventricular Tachycardia (SVT) (Correct answer)

Correct answer: Supraventricular Tachycardia (SVT)

Supraventricular Tachycardia (SVT) is a rapid heart rhythm originating above the ventricles. It is characterized by a regular, narrow QRS complex tachycardia, typically with a rate between 150-250 bpm. P waves are often difficult to see as they can be buried in the preceding T wave.

Question 32: What is the correct initial IV/IO dose of amiodarone for a patient with VF/pVT that is unresponsive to CPR, defibrillation, and vasopressor therapy?

150 mg over 10 minutes
1 mg/min infusion
300 mg push (Correct answer)
5 mg/kg push

Correct answer: 300 mg push

The initial dose of amiodarone for refractory VF/pVT in an adult cardiac arrest is a 300 mg IV or IO bolus (push). A second dose of 150 mg can be considered if VF/pVT persists. The 5 mg/kg dose was used in some trials but 300 mg is the standard recommended dose.

Question 33: What is the importance of obtaining a medical history from a patient?

To identify underlying health conditions and treatment risks (Correct answer)
To administer medications
To speed up transportation
To provide comfort

Correct answer: To identify underlying health conditions and treatment risks

Obtaining a medical history, often using the SAMPLE mnemonic, is crucial for paramedics. This information helps identify pre-existing conditions, allergies to medications, or current treatments that could impact the patient's current emergency or influence the paramedic's treatment choices. A thorough history ensures safer and more effective care by providing context for the patient's current condition.

Question 34: An avalanche victim has been buried for 40 minutes. Upon extrication, the patient is in asystole and has an airway completely obstructed with snow. According to resuscitation guidelines, which of these findings is the strongest indicator of a poor prognosis where termination of efforts may be considered?

The initial rhythm being asystole.
The presence of an obstructed airway. (Correct answer)
The duration of burial being greater than 35 minutes.
Evidence of moderate hypothermia.

Correct answer: The presence of an obstructed airway.

In avalanche victims, differentiating between asphyxial and hypothermic cardiac arrest is critical. An airway obstructed by snow indicates the primary cause of arrest was asphyxia. Survival from asphyxial arrest is extremely unlikely after 35-60 minutes of burial. A patent airway, even after a long burial, suggests the arrest may be primarily due to hypothermia, which has a better potential for survival with rewarming. Therefore, the obstructed airway is the most critical negative prognostic factor in this scenario.

Question 35: A patient with COPD presents with worsening dyspnea and is using accessory muscles. Their ETCO2 is 58 mmHg. This value MOST likely indicates:

Hypoventilation with CO2 retention (Correct answer)
Hyperventilation
Normal ventilation for a COPD patient
Adequate respiratory compensation

Correct answer: Hypoventilation with CO2 retention

ETCO2 of 58 mmHg indicates hypoventilation and CO2 retention (hypercapnia), consistent with a COPD exacerbation with impending respiratory failure.

Question 36: On a rhythm strip, you notice the QRS complex occurring regularly at 32 bpm with wide, bizarre-looking complexes and no associated P waves. What is this rhythm?

Idioventricular tachycardia
Accelerated idioventricular rhythm
Ventricular escape rhythm (Correct answer)
Junctional escape rhythm

Correct answer: Ventricular escape rhythm

A ventricular escape rhythm has a rate of 20-40 bpm, wide and bizarre QRS complexes, and represents the last resort pacemaker when higher pacemakers fail.

Question 37: A 68 kg patient in hemorrhagic shock requires a fluid bolus. Following current US EMS guidelines for crystalloid resuscitation, what is the appropriate initial bolus volume?

No IV fluid; transport immediately without fluid resuscitation
2 liters administered rapidly
1 liter administered as fast as possible
250–500 mL titrated to clinical response (Correct answer)

Correct answer: 250–500 mL titrated to clinical response

Current guidelines favor small-volume resuscitation (250–500 mL) titrated to clinical response to avoid dilutional coagulopathy and worsening hemorrhage.

Question 38: A 45-year-old female with massive facial trauma is unable to be ventilated with a bag-valve-mask, and multiple attempts at endotracheal intubation have failed. The patient is now hypoxic and bradycardic. What is the most appropriate next step in airway management?

Perform a surgical cricothyrotomy (Correct answer)
Attempt nasotracheal intubation
Insert a supraglottic airway
Perform a needle cricothyrotomy

Correct answer: Perform a surgical cricothyrotomy

In a "can't intubate, can't ventilate" (CICV) scenario, especially with massive facial trauma that precludes the use of other airways, a surgical cricothyrotomy is the definitive emergency procedure to secure an airway. A needle cricothyrotomy is an option but provides only temporary oxygenation and is not a definitive airway. A supraglottic airway would likely be ineffective due to the trauma, and nasotracheal intubation is contraindicated with severe facial injuries.

Question 39: A paramedic is preparing to administer intravenous epinephrine to a 22-pound (10 kg) child in asystole. Which of the following is the correct dose and concentration?

1 mg of 1:10,000 solution
0.1 mg of 1:10,000 solution (Correct answer)
0.1 mg of 1:1,000 solution
1 mg of 1:1,000 solution

Correct answer: 0.1 mg of 1:10,000 solution

The standard IV/IO dose of epinephrine for pediatric cardiac arrest is 0.01 mg/kg of the 1:10,000 concentration. For a 10 kg child, this calculates to 0.1 mg (0.01 mg/kg * 10 kg). The 1:10,000 concentration is crucial for IV/IO administration to avoid dosing errors.

Question 40: In lead II, a normal P wave should be upright and less than how many mm tall and less than how many ms wide?

3.5 mm tall, 110 ms wide
2.5 mm tall, 80 ms wide (Correct answer)
3.0 mm tall, 100 ms wide
2.5 mm tall, 120 ms wide

Correct answer: 2.5 mm tall, 80 ms wide

A normal P wave in lead II should be no taller than 2.5 mm and no wider than 80 ms (0.08 seconds); exceeding these limits suggests atrial enlargement.

Question 41: In a patient with an open abdominal wound with evisceration, what is the MOST appropriate prehospital management?

Cover the evisceration with a moist, sterile dressing and do NOT replace organs (Correct answer)
Leave the wound uncovered to prevent infection from dressing contamination
Replace the organs into the abdominal cavity and apply a pressure dressing
Apply a dry sterile dressing and apply direct pressure

Correct answer: Cover the evisceration with a moist, sterile dressing and do NOT replace organs

Eviscerated organs should be covered with a moist sterile dressing to prevent desiccation and should never be replaced in the field.

Question 42: A patient in respiratory failure has SpO2 of 88% on a non-rebreather mask at 15 LPM. What is the next best intervention?

Administer IV furosemide immediately
Increase flow to 20 LPM
Apply a nasal cannula simultaneously
Initiate CPAP or BiPAP (Correct answer)

Correct answer: Initiate CPAP or BiPAP

When a non-rebreather mask fails to maintain adequate oxygenation, positive pressure ventilation via CPAP or BiPAP is the next escalation step.

Question 43: What is the purpose of a cervical collar?

To prevent bleeding
To immobilize the neck and prevent spinal injury (Correct answer)
To control pain
To monitor vital signs

Correct answer: To immobilize the neck and prevent spinal injury

A cervical collar is applied to patients with suspected neck or spinal trauma to restrict movement of the head and neck. This immobilization is crucial to prevent further damage to the spinal cord, which could lead to permanent neurological deficits or paralysis. By maintaining spinal alignment, the collar helps protect the delicate structures of the cervical spine during transport and assessment.

Question 44: A 68-year-old male is found to be in unstable atrial flutter. His vital signs are BP 80/50 mmHg, HR 160, and he has an altered mental status. Which of the following is the most appropriate initial energy setting for synchronized cardioversion using a biphasic defibrillator?

360 joules
120-200 joules
50-100 joules (Correct answer)
200 joules

Correct answer: 50-100 joules

For narrow-complex supraventricular tachycardias like atrial flutter, the recommended initial energy setting for synchronized cardioversion is typically lower. According to AHA guidelines, an initial shock of 50-100 joules is appropriate for symptomatic atrial flutter.

Question 45: Which waveform type is used by most modern defibrillators and requires less energy than older monophasic devices?

Triphasic waveform
Biphasic waveform (Correct answer)
Sinusoidal waveform
Monophasic waveform

Correct answer: Biphasic waveform

Biphasic waveforms deliver current in two directions and are more effective at lower energy levels than monophasic waveforms.

Question 46: On an ECG, you observe a regular rhythm at 150 bpm with sawtooth flutter waves most visible in leads II, III, and aVF. What is the atrial rate most commonly associated with this rhythm?

300-350 bpm (Correct answer)
350-400 bpm
250-300 bpm
200-250 bpm

Correct answer: 300-350 bpm

Atrial flutter typically has an atrial rate of 300-350 bpm, commonly presenting with 2:1 conduction yielding a ventricular rate near 150 bpm.

Question 47: Which ECG change is the earliest and most sensitive indicator of acute myocardial ischemia before ST elevation develops?

ST segment depression in contiguous leads
PR segment depression
Hyperacute (peaked) T waves (Correct answer)
Development of Q waves

Correct answer: Hyperacute (peaked) T waves

Hyperacute T waves (tall, broad, symmetric) are often the earliest ECG change seen in acute coronary occlusion, appearing before ST elevation.

Question 48: During the management of a patient in asystole, what is the recommended dose and frequency of epinephrine administration?

1 mg every 3-5 minutes (Correct answer)
1 mg every 1-2 minutes
0.5 mg every 5-10 minutes
2 mg every 3-5 minutes

Correct answer: 1 mg every 3-5 minutes

Current ACLS guidelines recommend administering 1 mg of epinephrine every 3 to 5 minutes during cardiac arrest for both shockable and non-shockable rhythms like asystole. The goal of epinephrine is to increase myocardial and cerebral blood flow through its vasoconstrictive (alpha-adrenergic) effects.

Question 49: A patient's ECG shows 'saddle-back' or 'coved' ST elevation in V1-V2 with a right bundle branch block pattern in a patient who has had recurrent syncope. Which syndrome should be suspected?

Kounis syndrome
De Winter pattern
Brugada syndrome (Correct answer)
Wellens syndrome

Correct answer: Brugada syndrome

Brugada syndrome produces characteristic 'coved-type' ST elevation in V1-V2 with RBBB pattern and is associated with risk of ventricular fibrillation and sudden cardiac death.

Question 50: A patient presents with hypoxia, hypotension, and absent breath sounds on the left following blunt chest trauma. After needle decompression of the left chest yields no hiss of air, the MOST likely diagnosis is:

Needle decompression failure due to inadequate needle length
Massive hemothorax requiring IV fluid resuscitation (Correct answer)
Confirmed tension pneumothorax with successful decompression
Pericardial tamponade

Correct answer: Massive hemothorax requiring IV fluid resuscitation

When needle decompression yields no air despite classic tension pneumothorax signs after trauma, massive hemothorax should be considered as it can produce identical clinical findings.

Question 51: For synchronized cardioversion of unstable atrial fibrillation, the recommended initial energy setting using a biphasic defibrillator is:

100-200 J (Correct answer)
50 J
360 J
300 J

Correct answer: 100-200 J

Biphasic cardioversion for atrial fibrillation typically begins at 100-200 J, as lower energies reduce myocardial injury while maintaining adequate conversion rates.

Question 52: A glucometer reads 'HI' for a diabetic patient in altered mental status. This indicates blood glucose is:

Below 40 mg/dL
Between 200-300 mg/dL
Exactly 500 mg/dL
Above the device's measurable range (>600 mg/dL) (Correct answer)

Correct answer: Above the device's measurable range (>600 mg/dL)

'HI' on a glucometer indicates the blood glucose exceeds the device's upper measurable limit, typically above 600 mg/dL, suggesting severe hyperglycemia.

Question 53: Which IV fluid is currently recommended by PHTLS and most EMS systems for hemorrhagic shock resuscitation?

5% Dextrose in water (D5W)
Lactated Ringer's solution (Correct answer)
3% Hypertonic saline
Normal saline (0.9% NaCl)

Correct answer: Lactated Ringer's solution

Lactated Ringer's solution is favored over normal saline for hemorrhagic shock due to its lower chloride content and closer physiologic composition.

Question 54: Which IV access site is preferred in cardiac arrest when peripheral IV cannot be established?

External jugular vein
Femoral vein
Central subclavian vein
Intraosseous (IO) access (Correct answer)

Correct answer: Intraosseous (IO) access

Intraosseous access is the preferred alternative when peripheral IV fails in cardiac arrest because it can be established rapidly and provides reliable drug delivery.

Question 55: Which of the following ECG findings is the most definitive characteristic of Atrial Fibrillation?

An irregularly irregular rhythm (Correct answer)
Wide, bizarre-looking QRS complexes
A 'sawtooth' pattern of P waves
A progressively lengthening PR interval

Correct answer: An irregularly irregular rhythm

The hallmark of Atrial Fibrillation is an 'irregularly irregular' rhythm. This is caused by chaotic, uncoordinated electrical impulses from the atria bombarding the AV node, which then allows impulses to pass through to the ventricles at irregular intervals. There are no discernible P waves, only fibrillatory waves.

Question 56: Which IV access route is preferred for initial resuscitation when peripheral IV access cannot be established rapidly in a trauma patient?

Saphenous vein cutdown
Femoral venous catheter
Central venous catheter via subclavian vein
Intraosseous access (Correct answer)

Correct answer: Intraosseous access

IO access is the preferred alternative to peripheral IV in trauma resuscitation when IV access fails, providing rapid and reliable vascular access.

Question 57: What is the PR interval range that defines first-degree AV block in adults?

Greater than 0.24 seconds
Greater than 0.16 seconds
Greater than 0.12 seconds
Greater than 0.20 seconds (Correct answer)

Correct answer: Greater than 0.20 seconds

First-degree AV block is defined as a PR interval consistently greater than 0.20 seconds (200 ms) with all P waves conducted.

Question 58: What should a paramedic do if a patient is in respiratory distress?

Use a defibrillator
Administer oxygen and assist with breathing (Correct answer)
Monitor vital signs only
Offer water

Correct answer: Administer oxygen and assist with breathing

When a patient is in respiratory distress, their body is not receiving adequate oxygen, which can quickly become life-threatening. The paramedic's immediate actions include administering supplemental oxygen to improve oxygenation and, if necessary, assisting with ventilations using a bag-valve mask. These interventions aim to support the patient's breathing and prevent respiratory failure until the underlying cause can be addressed.

Question 59: A patient presents with severe acute asthma not responding to two albuterol nebulizations. What is the MOST appropriate next pharmacological intervention?

Administer oral methylprednisolone only
Administer ipratropium bromide in combination with albuterol (Correct answer)
Administer IV diphenhydramine
Repeat albuterol nebulization only

Correct answer: Administer ipratropium bromide in combination with albuterol

Ipratropium bromide combined with albuterol provides additive bronchodilation through different receptor pathways and is recommended for severe acute asthma.

Question 60: Which finding on a pulse oximeter waveform indicates a reliable SpO2 reading?

Irregular, erratic waveform
Consistent pulsatile waveform matching heart rate (Correct answer)
High perfusion index regardless of waveform shape
Flat plethysmographic waveform

Correct answer: Consistent pulsatile waveform matching heart rate

A consistent pulsatile plethysmographic waveform that correlates with the patient's heart rate indicates reliable pulse oximetry signal quality.

Question 61: What is the first-line antidote for reversing opioid-induced respiratory depression?

Atropine
N-acetylcysteine
Flumazenil
Naloxone (Correct answer)

Correct answer: Naloxone

Naloxone (Narcan) is a competitive opioid receptor antagonist and is the standard first-line treatment to reverse opioid-induced respiratory depression.

Question 62: What is the recommended target SpO2 range during post-cardiac arrest care to avoid hyperoxia?

94–99% (Correct answer)
88–92%
100%
90–93%

Correct answer: 94–99%

Titrating oxygen to maintain SpO2 between 94–99% avoids both hypoxia and the harmful effects of hyperoxia on reperfused brain tissue.

Question 63: What is the correct compression-to-ventilation ratio for a single rescuer performing CPR on an adult?

15:2
100:0 (continuous compressions)
5:1
30:2 (Correct answer)

Correct answer: 30:2

A single rescuer performing adult CPR uses a 30:2 ratio (30 compressions followed by 2 ventilations) to maximize perfusion time while providing oxygenation.

Question 64: A 28-year-old is found in cardiac arrest with suspected opioid overdose. Bystanders are performing chest compressions. According to AHA guidelines, what is the correct priority of interventions for this patient?

Prioritize high-quality CPR with ventilations and use an AED; administer naloxone without interrupting these core resuscitation efforts. (Correct answer)
Apply the AED and deliver a shock before any other intervention.
Withhold naloxone as it is ineffective once cardiac arrest has occurred.
Administer naloxone immediately via the intranasal route, then begin ventilations.

Correct answer: Prioritize high-quality CPR with ventilations and use an AED; administer naloxone without interrupting these core resuscitation efforts.

For a patient in cardiac arrest from a suspected opioid overdose, the cornerstone of treatment is high-quality CPR and ventilation to manage the severe hypoxia. While naloxone administration is recommended for suspected opioid overdose, it should not delay or interrupt fundamental BLS and ALS interventions like CPR and defibrillation. The priority is to address the arrest with standard, proven therapies while considering naloxone as a concurrent but secondary action.

Question 65: What is the role of the paramedic during trauma emergencies?

To monitor patients post-surgery
To provide initial stabilization and prepare for transport (Correct answer)
To perform surgeries
To prescribe painkillers

Correct answer: To provide initial stabilization and prepare for transport

During trauma emergencies, a paramedic's crucial role is to rapidly assess the patient, stabilize life-threatening injuries, and prepare them for safe transport to a definitive care facility. This involves controlling bleeding, ensuring an open airway, supporting breathing, and immobilizing potential spinal injuries. The goal is to prevent further injury and maintain the patient's condition during transit to the hospital.

Question 66: What is the role of a pulse oximeter?

To monitor heart rate
To measure oxygen saturation (Correct answer)
To deliver oxygen
To measure blood pressure

Correct answer: To measure oxygen saturation

A pulse oximeter is a non-invasive device that measures the oxygen saturation level in a patient's blood (SpO2). It works by emitting light through a finger or earlobe and detecting the amount of light absorbed by oxygenated and deoxygenated hemoglobin. This vital measurement helps paramedics assess the patient's respiratory function and oxygenation status, guiding decisions on oxygen therapy and ventilation.

Question 67: What is the significance of assessing a patient's vital signs?

To monitor emotional status
To evaluate pain
To monitor recovery
To assess the severity of the condition (Correct answer)

Correct answer: To assess the severity of the condition

Assessing a patient's vital signs—such as pulse rate, respiratory rate, blood pressure, temperature, and oxygen saturation—provides crucial objective data about their physiological status. These measurements indicate how well the body's essential systems are functioning and can rapidly reveal the severity of an illness or injury. Deviations from normal ranges alert paramedics to potential life threats and guide immediate treatment decisions.

Question 68: A patient presents with an irregular rhythm, no discernible P waves, and an irregularly irregular ventricular rate of 110 bpm. What is the most likely rhythm?

Wandering atrial pacemaker
Atrial fibrillation (Correct answer)
Atrial flutter with variable block
Multifocal atrial tachycardia

Correct answer: Atrial fibrillation

Atrial fibrillation is characterized by an irregularly irregular ventricular response and absent distinct P waves, replaced by fibrillatory baseline.

Question 69: A patient arrests after administration of succinylcholine and develops peaked T-waves on the monitor. Which drug should be given first?

Insulin and dextrose
Sodium bicarbonate
Calcium chloride (Correct answer)
Kayexalate

Correct answer: Calcium chloride

Calcium chloride (or gluconate) immediately stabilizes the myocardial membrane and is the first intervention for hyperkalemia-induced cardiac arrest.

Question 70: How should a paramedic stabilize a patient's spine in trauma cases?

By keeping the patient still
By providing pain relief
By immobilizing the head, neck, and spine (Correct answer)
By administering oxygen

Correct answer: By immobilizing the head, neck, and spine

In trauma cases, suspected spinal injuries are a major concern due to the potential for permanent neurological damage. Paramedics stabilize the patient's spine by carefully immobilizing the head, neck, and torso using devices like cervical collars, backboards, or scoop stretchers. This prevents movement of the spinal column, minimizing the risk of exacerbating an existing injury or causing a new one during assessment and transport.

Question 71: During resuscitation of a patient with tension pneumothorax, which finding confirms successful needle decompression?

Bilateral breath sounds without improvement in hemodynamics
Rush of air upon needle insertion and return of pulses (Correct answer)
Decrease in end-tidal CO2 to below 10 mmHg
Immediate restoration of normal sinus rhythm on the monitor

Correct answer: Rush of air upon needle insertion and return of pulses

A rush of air confirming pressure release followed by return of spontaneous circulation indicates successful decompression of a tension pneumothorax.

Question 72: A patient is being ventilated via ETT and peak airway pressures have significantly increased. The first step is to:

Remove the tube and re-intubate
Suction the ETT (Correct answer)
Increase tidal volume
Administer a bronchodilator

Correct answer: Suction the ETT

Rising peak airway pressures should first prompt suctioning to rule out mucus plug or secretion obstruction before other interventions.

Question 73: A patient with stable supraventricular tachycardia at 180 bpm does not respond to vagal maneuvers or adenosine. What electrical therapy is appropriate?

Transcutaneous pacing at 80 bpm
Synchronized cardioversion at 360J
Unsynchronized defibrillation at 200J
Synchronized cardioversion at 50-100J (Correct answer)

Correct answer: Synchronized cardioversion at 50-100J

Stable SVT refractory to medications is treated with synchronized cardioversion starting at 50-100J.

Question 74: Which electrolyte disturbance is a Class I indication for magnesium sulfate administration during cardiac arrest?

Hypocalcemia
Hyperkalemia
Hypomagnesemia-induced torsades de pointes (Correct answer)
Hyponatremia

Correct answer: Hypomagnesemia-induced torsades de pointes

Magnesium sulfate 1–2 g IV is a Class I indication specifically for torsades de pointes (polymorphic VT) associated with hypomagnesemia.

Question 75: Why is it important for paramedics to be familiar with their medical equipment?

To reduce costs
To monitor patient temperature
To ensure effective and efficient care (Correct answer)
To improve speed

Correct answer: To ensure effective and efficient care

Paramedics must be intimately familiar with their medical equipment to operate it correctly, quickly, and safely under high-stress emergency conditions. This knowledge ensures that interventions are performed effectively, minimizing delays and potential errors. Proficiency with equipment directly translates to providing high-quality, life-saving care and improving patient outcomes.

Question 76: A neonate is born at 36 weeks gestation and is apneic after initial stimulation. What is the correct initial ventilation rate using a bag-mask device?

60-80 breaths/min
20-25 breaths/min
40-60 breaths/min (Correct answer)
30-35 breaths/min

Correct answer: 40-60 breaths/min

Neonatal positive pressure ventilation should be delivered at 40-60 breaths per minute to achieve adequate chest rise.

Question 77: Which of the following is the MOST reliable early sign of internal hemorrhage in a trauma patient?

Decreasing urine output
Altered mental status
Decreasing blood pressure
Increasing heart rate (tachycardia) (Correct answer)

Correct answer: Increasing heart rate (tachycardia)

Tachycardia is the earliest and most sensitive compensatory response to internal hemorrhage as the body attempts to maintain cardiac output.

Question 78: A 34-year-old female who is approximately 30 weeks pregnant collapses in cardiac arrest. While performing high-quality CPR, what is the most critical manual intervention to improve the effectiveness of resuscitation?

Increasing chest compression depth to account for anatomical changes.
Placing a rolled towel under the patient's right hip.
Manually displacing the uterus to the patient's left side. (Correct answer)
Applying continuous cricoid pressure during ventilation.

Correct answer: Manually displacing the uterus to the patient's left side.

In a visibly pregnant patient (generally after 20 weeks gestation), the gravid uterus can compress the inferior vena cava and aorta, a condition known as aortocaval compression. This severely impedes venous return to the heart and reduces the effectiveness of chest compressions. Manually displacing the uterus to the patient's left is the primary intervention to relieve this pressure and is a critical component of maternal resuscitation.

Question 79: What is the ETCO2 value that BEST indicates effective CPR compressions during cardiac arrest resuscitation?

10–15 mmHg
< 10 mmHg
35–45 mmHg
> 20 mmHg (Correct answer)

Correct answer: > 20 mmHg

An ETCO2 greater than 20 mmHg during CPR indicates adequate chest compressions generating sufficient cardiac output.

Question 80: What is the function of a blood pressure cuff?

To check oxygen levels
To measure blood pressure (Correct answer)
To monitor heart rate
To deliver oxygen

Correct answer: To measure blood pressure

A blood pressure cuff, or sphygmomanometer, is a fundamental diagnostic tool used to measure a patient's arterial blood pressure. It works by temporarily occluding blood flow in an artery and then gradually releasing the pressure while listening for specific sounds (Korotkoff sounds) or using an oscillometric method. This measurement provides crucial information about the patient's cardiovascular status, indicating conditions like hypertension or hypotension.

Question 81: You are treating a patient in stable wide-complex tachycardia at 170 bpm. Which feature on the ECG most strongly supports ventricular tachycardia over SVT with aberrancy?

QRS width greater than 0.12 seconds
AV dissociation visible on the ECG (Correct answer)
Presence of left bundle branch block morphology
Rate greater than 150 bpm

Correct answer: AV dissociation visible on the ECG

AV dissociation (P waves marching independently through QRS complexes) is pathognomonic for ventricular tachycardia and cannot occur in SVT.

Question 82: A patient with tricyclic antidepressant (TCA) overdose develops a wide QRS complex and hypotension. What is the treatment of choice?

Lidocaine infusion
Magnesium sulfate IV
Calcium chloride IV
Sodium bicarbonate IV (Correct answer)

Correct answer: Sodium bicarbonate IV

Sodium bicarbonate alkalinizes the serum and increases the sodium gradient, narrowing the QRS complex and improving hypotension caused by TCA-induced sodium channel blockade.

Question 83: What type of medications are commonly carried by paramedics?

Steroids
Antibiotics
Analgesics, epinephrine, nitroglycerin, and naloxone (Correct answer)
Blood thinners

Correct answer: Analgesics, epinephrine, nitroglycerin, and naloxone

Paramedics carry a specific formulary of medications to address common emergencies. Analgesics manage pain, epinephrine treats severe allergic reactions (anaphylaxis) and cardiac arrest, nitroglycerin is used for chest pain related to cardiac ischemia, and naloxone reverses opioid overdose. These medications are crucial for immediate life-saving interventions and symptom management in the pre-hospital setting.

Question 84: A patient is rescued from a house fire and is in cardiac arrest with suspected cyanide toxicity. After standard ACLS, what antidote should be administered?

Sodium thiosulfate 12.5g IV alone
Hydroxocobalamin 5g IV (Correct answer)
Flumazenil 0.2mg IV
Atropine 1mg IV

Correct answer: Hydroxocobalamin 5g IV

Hydroxocobalamin (Cyanokit) 5g IV is the preferred cyanide antidote in smoke inhalation victims as it does not cause methemoglobinemia.

Question 85: A new paramedic on your team begins performing compressions but uses a rate of 80/min. As team leader, what is the BEST immediate action?

Stop the code and re-educate the team
Redirect the compressor to target 100-120/min using closed-loop communication (Correct answer)
Ignore it and continue
Immediately switch compressors without explanation

Correct answer: Redirect the compressor to target 100-120/min using closed-loop communication

Closed-loop communication allows the team leader to correct performance in real time without disrupting resuscitation flow.

Question 86: How is hypothermia managed in a trauma patient?

By using ice packs
By warming the patient gradually and monitoring (Correct answer)
By applying heat quickly
By elevating the legs

Correct answer: By warming the patient gradually and monitoring

Rapid rewarming of a hypothermic patient can lead to dangerous complications such as "rewarming shock," where peripheral vasodilation causes a sudden drop in blood pressure and potential cardiac arrest. Gradual warming allows the body to re-acclimate safely, minimizing stress on the cardiovascular system. Continuous monitoring of vital signs during this process is essential to detect and manage any adverse reactions.

Question 87: How should a paramedic assess a patient's airway?

By taking the patient's temperature
By checking pulse rate
By ensuring the airway is clear of obstructions (Correct answer)
By listening to the lungs

Correct answer: By ensuring the airway is clear of obstructions

Assessing a patient's airway involves determining if it is open and unobstructed, allowing air to move freely to and from the lungs. Paramedics look for signs of obstruction, listen for abnormal sounds like snoring or gurgling, and visually inspect the mouth and throat for foreign objects or swelling. A clear airway is the absolute first priority in patient assessment, as without it, breathing and circulation cannot be effective.

Question 88: In a patient requiring RSI (Rapid Sequence Intubation), what is the CORRECT sequence of medication administration?

Succinylcholine first, then etomidate
Sedative/induction agent first, then neuromuscular blocking agent (Correct answer)
Concurrent administration of both agents simultaneously
Neuromuscular blocking agent first, then sedative

Correct answer: Sedative/induction agent first, then neuromuscular blocking agent

In RSI, the induction/sedative agent is always given first to achieve unconsciousness before the neuromuscular blocking agent is administered.

Question 89: A patient with ROSC is being transported. Initially stable, their BP drops to 60/palp, they become cyanotic, and you note absent lung sounds on the left side with tracheal deviation to the right. What is the most likely reversible cause of this acute deterioration?

Tension pneumothorax. (Correct answer)
Massive pulmonary embolism.
Cardiac tamponade.
Acute myocardial re-infarction.

Correct answer: Tension pneumothorax.

This clinical picture is a classic presentation of a tension pneumothorax, one of the reversible 'H and T' causes. Air has accumulated in the pleural space, collapsing the lung and shifting the mediastinum, which obstructs venous return to the heart, causing obstructive shock. This requires immediate needle decompression.

Question 90: Which of the following is the MOST appropriate first-line intervention for massive extremity hemorrhage in the prehospital setting?

Elevate the extremity above the heart
Apply a pressure bandage and reassess
Apply a tourniquet proximal to the wound (Correct answer)
Apply direct pressure with a sterile dressing

Correct answer: Apply a tourniquet proximal to the wound

For massive extremity hemorrhage, a tourniquet applied proximal to the wound is the most effective and rapid intervention to control life-threatening bleeding.

Question 91: During CPAP application, at what pressure setting should prehospital CPAP typically be initiated for acute pulmonary edema?

15-20 cm H2O
5-10 cm H2O (Correct answer)
20-25 cm H2O
1-2 cm H2O

Correct answer: 5-10 cm H2O

Prehospital CPAP for acute pulmonary edema is typically initiated at 5-10 cm H2O, which provides enough positive pressure to recruit alveoli without causing barotrauma.

Question 92: Which rhythm requires immediate unsynchronized defibrillation?

Pulseless ventricular fibrillation (Correct answer)
Supraventricular tachycardia
Stable ventricular tachycardia with a pulse
Atrial fibrillation with rapid ventricular response

Correct answer: Pulseless ventricular fibrillation

Pulseless ventricular fibrillation is a shockable rhythm requiring immediate unsynchronized defibrillation as it has no organized cardiac complex to synchronize to.

Question 93: A patient with a suspected C-spine injury requires intubation. Which technique is most appropriate?

Blind nasotracheal intubation
Postpone intubation until hospital arrival
Manual inline stabilization with orotracheal intubation (Correct answer)
Cricothyrotomy immediately

Correct answer: Manual inline stabilization with orotracheal intubation

Manual inline stabilization (MILS) during orotracheal intubation is the preferred technique to maintain cervical spine alignment while securing the airway.

Question 94: What is the first step in assessing an emergency patient?

To provide medications
To transport the patient
To move the patient
To perform an initial assessment and prioritize treatment (Correct answer)

Correct answer: To perform an initial assessment and prioritize treatment

The first step in assessing an emergency patient is to perform an initial assessment, often called the primary survey. This rapid evaluation focuses on identifying and addressing immediate life-threats to the patient's airway, breathing, and circulation (ABC). Prioritizing treatment based on these findings ensures that the most critical issues are addressed first, maximizing the patient's chances of survival.

Question 95: What is the recommended initial adult IV dose of naloxone for suspected opioid overdose?

0.1 mg
10 mg
0.01 mg
0.4 to 2 mg (Correct answer)

Correct answer: 0.4 to 2 mg

The standard initial adult IV dose of naloxone ranges from 0.4 to 2 mg, titrated to restore adequate ventilation without precipitating full withdrawal in opioid-tolerant patients.

Question 96: A patient is found unresponsive with gurgling respirations. After opening the airway, suctioning should last NO longer than:

5 seconds per attempt
10–15 seconds per attempt (Correct answer)
30 seconds per attempt
60 seconds per attempt

Correct answer: 10–15 seconds per attempt

Oropharyngeal suctioning should not exceed 10–15 seconds per attempt to avoid prolonged hypoxia and vagal stimulation.

Question 97: What does the PR interval on an ECG tracing represent, and what is its normal duration?

The time for the electrical impulse to travel from the SA node to the ventricles; 0.12-0.20 seconds (Correct answer)
Ventricular depolarization; 0.12-0.20 seconds
The time for the electrical impulse to travel from the SA node to the ventricles; 0.06-0.10 seconds
Ventricular repolarization; 0.06-0.10 seconds

Correct answer: The time for the electrical impulse to travel from the SA node to the ventricles; 0.12-0.20 seconds

The PR interval measures the time from the beginning of the P wave (atrial depolarization) to the beginning of the QRS complex (ventricular depolarization). It represents the time it takes for the electrical impulse to travel from the sinoatrial (SA) node through the atria and the atrioventricular (AV) node. The normal duration is 0.12 to 0.20 seconds.

Question 98: Every two minutes, the resuscitation team leader pauses chest compressions for a rhythm check and says, "Okay team, that was two minutes of CPR. Rhythm is still PEA. Airway is secure, IV is patent. We gave epinephrine one minute ago. Let's resume compressions. Our next pulse check is in two minutes." This behavior is a key example of which element of team dynamics?

Knowing one's limitations
Summarizing and re-evaluating (Correct answer)
Constructive intervention
Mutual respect

Correct answer: Summarizing and re-evaluating

Periodically summarizing the patient's status, interventions performed, and the upcoming plan helps maintain shared situational awareness. This ensures all team members are on the same page and provides an opportunity to correct any misunderstandings.

Question 99: A 68-year-old male is in cardiac arrest with a persistent rhythm of Ventricular Fibrillation after three defibrillation attempts and a dose of epinephrine. According to the latest ACLS guidelines, which of the following is the most appropriate next pharmacological intervention?

Administer Amiodarone 300 mg IV/IO push. (Correct answer)
Administer Lidocaine 1.5 mg/kg IV/IO.
Administer an additional dose of Epinephrine 1 mg.
Administer Sodium Bicarbonate 1 mEq/kg.

Correct answer: Administer Amiodarone 300 mg IV/IO push.

For refractory Ventricular Fibrillation or pulseless Ventricular Tachycardia (VF/pVT) that is unresponsive to defibrillation and a vasopressor, the next line of treatment is an antiarrhythmic. Amiodarone, in an initial dose of 300 mg IV/IO, is the primary antiarrhythmic recommended in ACLS guidelines. While Lidocaine is an alternative, Amiodarone is generally preferred. Another dose of epinephrine would be administered later, and Sodium Bicarbonate is not routinely recommended.

Question 100: You are treating an 18-month-old in ventricular fibrillation. What is the recommended initial energy dose for defibrillation?

8 J/kg
A standard adult dose of 200 J
2 J/kg (Correct answer)
0.5 J/kg

Correct answer: 2 J/kg

The current PALS guidelines recommend an initial energy dose of 2 J/kg for the defibrillation of pediatric patients in ventricular fibrillation or pulseless ventricular tachycardia. Subsequent shocks may be increased to 4 J/kg or higher, but the first shock should be 2 J/kg.

Question 101: To ensure both high-quality CPR and effective team coordination, what is the recommended approach for switching the person performing chest compressions?

Switch compressors every 2 minutes, ideally during a planned pause like a rhythm check. (Correct answer)
Switch compressors only when the current provider verbally states they are fatigued.
Have a single, dedicated compressor perform compressions for the entire resuscitation.
Switch compressors every 5 minutes to maintain provider rhythm and momentum.

Correct answer: Switch compressors every 2 minutes, ideally during a planned pause like a rhythm check.

High-quality CPR is physically demanding, and performance degrades after just a couple of minutes. The AHA recommends switching compressors approximately every 2 minutes (or 5 cycles) to prevent fatigue. Coordinating this switch during a planned pause minimizes interruptions to chest compressions.

Question 102: In a patient with acute severe asthma who is becoming fatigued and hypercapnic despite aggressive bronchodilator therapy, the MOST appropriate action is:

Apply a non-rebreather mask and increase oxygen flow
Prepare for definitive airway management and consider intubation (Correct answer)
Continue nebulized albuterol every 5 minutes and observe
Administer IV magnesium sulfate and continue monitoring only

Correct answer: Prepare for definitive airway management and consider intubation

A fatiguing asthmatic with hypercapnia is in impending respiratory failure and requires airway management preparation including possible RSI.

Question 103: Which intraosseous insertion site is preferred in adults when rapid IO access is needed?

Proximal tibia (Correct answer)
Proximal humerus
Sternum
Distal tibia

Correct answer: Proximal tibia

The proximal tibia is the preferred IO site in adults due to its accessibility, flat surface, and thick cortex that accommodates standard IO needles reliably.

Question 104: Which pulse oximetry condition can give a falsely elevated SpO2 reading?

Carbon monoxide poisoning (Correct answer)
Anemia
Peripheral vasoconstriction
Hypothermia

Correct answer: Carbon monoxide poisoning

Carbon monoxide binds hemoglobin similarly to oxygen and is read as oxyhemoglobin by standard pulse oximeters, causing falsely elevated SpO2 despite severe hypoxia.

Question 105: How is intravenous (IV) therapy used in emergencies?

To monitor heart rate
To administer fluids and medications directly (Correct answer)
To monitor blood pressure
To relieve pain

Correct answer: To administer fluids and medications directly

Intravenous (IV) therapy provides a direct route into the patient's bloodstream, allowing for rapid and efficient delivery of fluids and medications. In emergencies, this is critical for rehydrating patients, correcting electrolyte imbalances, and administering life-saving drugs like pain relievers, antiarrhythmics, or vasopressors. The immediate systemic effect of IV administration makes it an indispensable tool for paramedics.

Question 106: During a cardiac arrest, ETCO2 rises from 10 mmHg to 35 mmHg without a change in CPR technique. This indicates:

Worsening cardiac output
Return of spontaneous circulation (Correct answer)
Tube displacement into the esophagus
Hyperventilation by the provider

Correct answer: Return of spontaneous circulation

A sudden rise in ETCO2 to near-normal levels (35-45 mmHg) during resuscitation is a reliable indicator of return of spontaneous circulation.

Question 107: A patient with a regular, wide-complex tachycardia and a blood pressure of 88/50 mmHg is being treated. The decision is made to perform synchronized cardioversion. What is the recommended initial energy level for this rhythm?

25 joules
100 joules (Correct answer)
50 joules
200 joules

Correct answer: 100 joules

For a stable, regular, monomorphic wide-complex tachycardia (presumed Ventricular Tachycardia), the AHA recommends an initial synchronized shock of 100 joules. If the initial shock is unsuccessful, energy levels can be increased in subsequent attempts.

Question 108: What is the primary purpose of emergency medical protocols?

To prescribe medications
To identify diseases
To provide a set of guidelines for paramedics (Correct answer)
To reduce hospital stays

Correct answer: To provide a set of guidelines for paramedics

Emergency medical protocols are standardized guidelines that direct paramedics on how to assess, treat, and manage various medical emergencies. They ensure consistent, evidence-based care is delivered efficiently and safely in the pre-hospital setting. These protocols are essential for maintaining quality of care and patient safety, helping paramedics make critical decisions under pressure.

Question 109: Which of the following BEST describes the correct technique for applying a wound-packing agent to a junctional hemorrhage?

Apply the agent to the wound surface only and cover with a dressing
Pack the agent tightly into the wound and apply firm direct pressure for 3 minutes (Correct answer)
Pour the agent into the wound and apply light pressure for 30 seconds
Insert the agent and immediately apply a tourniquet above the site

Correct answer: Pack the agent tightly into the wound and apply firm direct pressure for 3 minutes

Wound packing requires tight packing of hemostatic agent into the wound followed by firm direct pressure for at least 3 minutes to activate clotting.

Question 110: A trauma patient in Class III hemorrhagic shock would MOST likely present with which set of vital signs?

HR 60, BP 140/90, RR 10
HR 120, BP 90/70, RR 28 (Correct answer)
HR 90, BP 120/80, RR 14
HR 100, BP 110/80, RR 20

Correct answer: HR 120, BP 90/70, RR 28

Class III hemorrhagic shock (30–40% blood loss) typically presents with HR >120, systolic BP <90, and RR of 26–35.

Question 111: Which of the following scenarios correctly describes the primary difference between synchronized cardioversion and defibrillation?

Cardioversion is used for bradycardic rhythms, while defibrillation is for tachycardic rhythms.
Cardioversion is indicated for pulseless patients, while defibrillation is for patients with a pulse.
Defibrillation is an unsynchronized shock for pulseless, chaotic rhythms, while cardioversion is a synchronized shock for unstable tachycardias with a pulse. (Correct answer)
Defibrillation delivers a shock timed with the R-wave, while cardioversion is unsynchronized.

Correct answer: Defibrillation is an unsynchronized shock for pulseless, chaotic rhythms, while cardioversion is a synchronized shock for unstable tachycardias with a pulse.

The key distinction lies in the timing of the shock and the patient's cardiac status. Defibrillation is used for life-threatening, pulseless arrhythmias like Ventricular Fibrillation (VF) and pulseless Ventricular Tachycardia (VT), delivering an unsynchronized, high-energy shock. Synchronized cardioversion is used for patients who have a pulse but are unstable due to a tachyarrhythmia (e.g., atrial fibrillation, atrial flutter, stable VT); the shock is timed to the R-wave to avoid the vulnerable T-wave period.

Question 112: In synchronized cardioversion, the shock is timed to which part of the cardiac cycle?

P wave
QRS complex (Correct answer)
U wave
T wave

Correct answer: QRS complex

Synchronized cardioversion delivers energy with the QRS complex to avoid the vulnerable T-wave period and prevent VF induction.

Question 113: How should a paramedic manage external bleeding?

By applying a bandage only
By applying pressure and elevating the limb (Correct answer)
By administering painkillers
By elevating the limb

Correct answer: By applying pressure and elevating the limb

Managing external bleeding effectively is critical to prevent hypovolemic shock. The most immediate and effective method is to apply direct pressure to the wound, which helps to compress the damaged blood vessels and promote clotting. Elevating the injured limb above the level of the heart also helps reduce blood flow to the area, further assisting in bleeding control.

Question 114: Which of the following is the MOST appropriate ventilation rate for a patient with ROSC (return of spontaneous circulation) who requires assisted ventilation?

10–12 breaths/min (Correct answer)
16–20 breaths/min
6–8 breaths/min
20–24 breaths/min

Correct answer: 10–12 breaths/min

Post-ROSC patients should be ventilated at 10–12 breaths/min to maintain normocapnia and avoid hypocapnia-induced cerebral vasoconstriction.

Question 115: Which ECG finding is most characteristic of hyperkalemia?

Peaked, narrow, symmetric T waves (Correct answer)
Delta waves with short PR interval
Prolonged QT interval
Prominent U waves

Correct answer: Peaked, narrow, symmetric T waves

Hyperkalemia classically produces tall, peaked, narrow, and symmetric T waves, especially prominent in precordial leads.

Question 116: A 55-year-old male presents with sudden onset pleuritic chest pain, dyspnea, and tachycardia after a long flight. Which condition should be suspected FIRST?

Pulmonary embolism (Correct answer)
Spontaneous pneumothorax
Aortic dissection
Acute MI

Correct answer: Pulmonary embolism

Sudden pleuritic chest pain, dyspnea, tachycardia after prolonged immobility (long flight) is the classic presentation of pulmonary embolism.

Question 117: A patient with suspected cervical spine injury requires airway management. The preferred method is:

Hyperextend the neck and perform orotracheal intubation
Delay airway management until imaging is available
Video laryngoscopy with manual in-line stabilization (Correct answer)
Blind nasotracheal intubation in all cases

Correct answer: Video laryngoscopy with manual in-line stabilization

Video laryngoscopy combined with manual in-line cervical stabilization allows visualization for intubation while minimizing cervical spine movement.

Question 118: What is the purpose of administering oxygen in an emergency?

To enhance tissue oxygenation and organ function (Correct answer)
To increase blood pressure
To calm the patient
To reduce pain

Correct answer: To enhance tissue oxygenation and organ function

Administering supplemental oxygen in an emergency is vital because many medical and trauma conditions can lead to hypoxemia, a dangerously low level of oxygen in the blood. By increasing the oxygen concentration, paramedics can improve the oxygen supply to the patient's tissues and vital organs. This helps prevent cellular damage and supports overall physiological function, maintaining organ viability and patient stability.

Question 119: While assessing a patient, you note a wide-complex tachycardia on the monitor with a rate of 180 bpm and a regular rhythm. The patient is pulseless and apneic. What is the most appropriate immediate action?

Administer Amiodarone
Obtain a 12-lead ECG
Perform synchronized cardioversion
Begin high-quality CPR and prepare for defibrillation (Correct answer)

Correct answer: Begin high-quality CPR and prepare for defibrillation

This patient is in cardiac arrest. The rhythm described is pulseless Ventricular Tachycardia (pVT). According to ACLS guidelines, the immediate priority for a shockable rhythm like pVT is to start high-quality CPR and deliver a defibrillation shock as soon as possible.

Question 120: What is the purpose of CPR?

To assist with breathing
To maintain circulation and oxygen (Correct answer)
To stop bleeding
To monitor vital signs

Correct answer: To maintain circulation and oxygen

Cardiopulmonary Resuscitation (CPR) is a life-saving technique used when someone's breathing or heart stops. Its primary purpose is to manually pump blood to the brain and other vital organs, providing essential oxygen until more advanced medical intervention can restore normal heart and lung function. By maintaining artificial circulation and oxygenation, CPR helps prevent irreversible organ damage, especially to the brain.

Question 121: What is the importance of response time in emergency care?

To monitor patient comfort
To ensure immediate intervention and improve patient outcomes (Correct answer)
To reduce transport time
To decrease treatment costs

Correct answer: To ensure immediate intervention and improve patient outcomes

In emergency care, every second counts, especially in critical situations like cardiac arrest, severe trauma, or stroke. A rapid response time allows paramedics to reach the patient quickly, initiate life-saving interventions, and stabilize their condition sooner. This immediate action significantly increases the chances of survival and can reduce the severity of long-term disabilities, directly improving patient outcomes.

Question 122: When should role assignments ideally be made during a mass casualty resuscitation event with multiple patients?

After completing the first resuscitation
Only when a team member asks for direction
As each task becomes necessary
Before patient contact, during the pre-arrival briefing (Correct answer)

Correct answer: Before patient contact, during the pre-arrival briefing

Pre-arrival role assignment prevents confusion and ensures the team operates efficiently from the moment of patient contact.

Question 123: A paramedic identifies a regular rhythm with a rate of 140 bpm, narrow QRS complexes, and a 'sawtooth' pattern of flutter waves instead of P waves. This rhythm is best identified as:

Ventricular Fibrillation
Atrial Flutter (Correct answer)
Sinus Tachycardia
Junctional Tachycardia

Correct answer: Atrial Flutter

Atrial Flutter is characterized by a rapid, regular atrial depolarization from a re-entry circuit, which creates a classic 'sawtooth' pattern of flutter waves on the ECG. The ventricular response can be regular or variable depending on how many flutter waves are conducted through the AV node.

Question 124: A patient with a cardiac pacemaker presents to your unit. The ECG shows a pacemaker spike followed by a QRS complex in some beats but not others. What does this indicate?

Pacemaker oversensing
Failure to capture (Correct answer)
Normal pacemaker function with fusion beats
Failure to sense (undersensing)

Correct answer: Failure to capture

Failure to capture occurs when a pacemaker spike is present but fails to depolarize the myocardium, resulting in pacing spikes not followed by QRS complexes.

Question 125: Which combination of antidotes is used to treat severe organophosphate poisoning?

Physostigmine and pyridoxine
Naloxone and sodium bicarbonate
Flumazenil and calcium gluconate
Pralidoxime (2-PAM) and atropine (Correct answer)

Correct answer: Pralidoxime (2-PAM) and atropine

Atropine reverses muscarinic effects and pralidoxime (2-PAM) reactivates acetylcholinesterase before aging occurs, making them the dual treatment for organophosphate poisoning.

Question 126: Which of the following BEST describes the mechanism by which a tourniquet controls hemorrhage?

It causes vasoconstriction of peripheral arteries through pressure receptors
It reduces systemic blood pressure to decrease flow to the extremity
It compresses soft tissue and vessels against bone to occlude arterial blood flow (Correct answer)
It promotes local clot formation by activating platelets at the wound site

Correct answer: It compresses soft tissue and vessels against bone to occlude arterial blood flow

A tourniquet controls hemorrhage by physically compressing all soft tissue layers including vessels against the underlying bone, stopping distal arterial flow.

Question 127: Which of the following BEST indicates successful intraosseous needle placement before drug administration?

Resistance is felt during needle insertion
The patient experiences pain upon needle insertion
The needle stands upright without support and saline flushes without resistance (Correct answer)
Blood appears at the needle hub immediately

Correct answer: The needle stands upright without support and saline flushes without resistance

Correct IO placement is confirmed when the needle stands upright unsupported and a saline flush meets no resistance with no subcutaneous infiltration.

Question 128: What is the purpose of the Glasgow Coma Scale?

To evaluate the patient's level of consciousness (Correct answer)
To test muscle strength
To measure blood pressure
To monitor oxygen levels

Correct answer: To evaluate the patient's level of consciousness

The Glasgow Coma Scale (GCS) is a standardized neurological assessment tool used by paramedics and other healthcare professionals. It evaluates a patient's level of consciousness by scoring their eye-opening, verbal response, and motor response. The GCS provides a quick, objective, and consistent way to track changes in a patient's neurological status, which is crucial for guiding treatment and predicting outcomes, especially in head injuries.

Question 129: The comprehensive post-cardiac arrest care plan for an adult patient who has achieved ROSC primarily focuses on which set of goals?

Administering prophylactic antiarrhythmics, obtaining a chest x-ray, and restricting all fluid intake.
Rapidly rewarming the patient, administering sodium bicarbonate, and inducing a medical coma.
Optimizing hemodynamics and ventilation, considering Targeted Temperature Management, and identifying/treating the precipitating cause. (Correct answer)
Focusing solely on airway protection and waiting for hospital-based interventions.

Correct answer: Optimizing hemodynamics and ventilation, considering Targeted Temperature Management, and identifying/treating the precipitating cause.

Effective post-cardiac arrest care is a bundle of interventions. The core components include: 1) Stabilizing the patient's circulatory and respiratory status (hemodynamics and ventilation), 2) Protecting the brain from secondary injury (primarily with TTM for comatose patients), and 3) Diagnosing and treating the underlying reversible causes (e.g., STEMI) that led to the arrest.

Question 130: The Sellick maneuver (cricoid pressure) is applied during RSI primarily to:

Improve laryngoscope view
Prevent passive regurgitation of gastric contents (Correct answer)
Open the glottis wider
Reduce the dose of sedative needed

Correct answer: Prevent passive regurgitation of gastric contents

Cricoid pressure compresses the esophagus against the vertebral body to reduce passive regurgitation and aspiration risk during intubation.

Question 131: After successful intubation, the tube is taped at the 23 cm mark at the lips in an average adult male. This placement suggests the tube tip is:

At the carina
In the right mainstem bronchus
Correctly positioned in the mid-trachea (Correct answer)
Too shallow — should be at 27 cm

Correct answer: Correctly positioned in the mid-trachea

For adult males, securing the ETT at 21–23 cm at the lips generally places the tip in the mid-trachea, approximately 3–4 cm above the carina.

Question 132: Which prehospital intervention is indicated for a patient with signs of tension pneumothorax and impending cardiovascular collapse?

Needle decompression of the affected side (Correct answer)
Positive pressure ventilation at high tidal volumes
Administration of 2L normal saline IV
Bilateral chest tubes in the field

Correct answer: Needle decompression of the affected side

Needle decompression of the affected hemithorax is the immediate prehospital treatment to relieve the pressure buildup causing tension pneumothorax and cardiovascular collapse.

Question 133: What is the primary goal of trauma management?

To assess mental status
To stabilize the patient and control bleeding (Correct answer)
To relieve pain
To transport the patient

Correct answer: To stabilize the patient and control bleeding

The primary goal of trauma management in the pre-hospital setting is to rapidly stabilize the patient's life-threatening conditions and control any active bleeding. This involves addressing the ABCs (Airway, Breathing, Circulation), preventing hypovolemic shock, and immobilizing injuries. These critical interventions aim to maintain vital organ function and prepare the patient for safe and swift transport to definitive surgical care.

Question 134: During neonatal resuscitation, chest compressions are indicated when the heart rate remains below what threshold despite 30 seconds of adequate PPV?

60 bpm (Correct answer)
40 bpm
80 bpm
100 bpm

Correct answer: 60 bpm

Neonatal chest compressions begin when the heart rate is below 60 bpm after 30 seconds of effective positive pressure ventilation.

Question 135: Which ECG finding in a ROSC patient is the strongest indication for emergent coronary angiography?

ST-segment elevation in two contiguous leads (Correct answer)
First-degree AV block
Right bundle branch block alone
Sinus tachycardia with PVCs

Correct answer: ST-segment elevation in two contiguous leads

ST-elevation myocardial infarction (STEMI) pattern is a class I indication for immediate percutaneous coronary intervention (PCI) after ROSC.

Certified Paramedic Response (CPR) Examination

The Certified Paramedic Response exam validates advanced pre-hospital emergency care competency, assessing clinical judgment and procedural skills across airway management, cardiology, trauma, and medical emergencies at the paramedic level.

135

Questions

150 min

Time Limit

70%

To Pass

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