ACLS Medical Training 2 — Questions and Answers
Question 1: During ACLS training, which rhythm requires immediate defibrillation as the first intervention?
- Asystole
- Pulseless electrical activity
- Ventricular fibrillation (Correct answer)
- Sinus bradycardia
Correct answer: Ventricular fibrillation
Ventricular fibrillation is a shockable rhythm that requires immediate defibrillation to restore organized electrical activity.
Question 2: A patient in cardiac arrest has been receiving CPR for 2 minutes. The monitor shows organized electrical activity but no pulse is detected. What is the most likely rhythm?
- Ventricular tachycardia
- Pulseless electrical activity (PEA) (Correct answer)
- Atrial fibrillation
- Ventricular fibrillation
Correct answer: Pulseless electrical activity (PEA)
PEA is characterized by organized electrical activity on the monitor without a detectable pulse.
Question 3: Which of the following is a reversible cause of cardiac arrest represented by the 'H's and T's'?
- Hypertension
- Hypovolemia (Correct answer)
- Hypercholesterolemia
- Hyperglycemia
Correct answer: Hypovolemia
Hypovolemia is one of the 'H' reversible causes of cardiac arrest and should be treated with fluid resuscitation.
Question 4: During ACLS simulation, a student administers amiodarone for refractory VF. What is the correct initial IV/IO dose?
- 150 mg
- 300 mg (Correct answer)
- 500 mg
- 1 mg/kg
Correct answer: 300 mg
The initial dose of amiodarone for refractory VF/pulseless VT is 300 mg IV/IO bolus.
Question 5: In ACLS certification, what is the recommended compression-to-ventilation ratio for a single rescuer performing CPR on an adult?
- 15:2
- 30:2 (Correct answer)
- 20:2
- 5:1
Correct answer: 30:2
The 30:2 ratio is standard for single-rescuer adult CPR to balance compressions with ventilations.
Question 6: A patient with ROSC after cardiac arrest has a SpO2 of 94%. Which action is most appropriate per ACLS post-cardiac arrest care guidelines?
- Increase O2 to achieve SpO2 of 100%
- Titrate O2 to maintain SpO2 of 92–98% (Correct answer)
- Discontinue supplemental oxygen
- Immediately intubate and ventilate at high FiO2
Correct answer: Titrate O2 to maintain SpO2 of 92–98%
Post-ROSC care guidelines recommend titrating oxygen to avoid hyperoxia, targeting SpO2 of 92–98%.
Question 7: During ACLS megacode practice, when should chest compressions be paused?
- Every 1 minute to reassess rhythm
- Only to deliver a shock or check pulse after rhythm change (Correct answer)
- Whenever a medication is being administered
- Every time a rescuer change occurs
Correct answer: Only to deliver a shock or check pulse after rhythm change
Compressions should be paused only to deliver a defibrillation shock or to check for a pulse after a rhythm change suggesting ROSC.
ACLS Medical Training 2
During ACLS training, which rhythm requires immediate defibrillation as the first intervention?