Advanced Cardiac Life Support
(ACLS)NEWEST COMPLETE QUESTIONS AND
CORRECT VERIFIED ANSWERS(DETAILED
ANSWERS)|ALREADY GRADED A+
,Section 1: Systematic Approach & High-Quality CPR
1. Question: What is the first step in the systematic approach to a suspected cardiac arrest?
- Answer: Verify scene safety.
- Rationale: The first step for any rescuer is to ensure the environment is safe for themselves, the victim, and bystanders
before making contact.
2. Question: What is the recommended chest compression depth for adults during CPR?
- Answer: At least 2 inches (5 cm).
- Rationale: Compressions of at least 2 inches (but no more than 2.4 inches) provide enough intrathoracic pressure to
generate adequate blood flow to the heart and brain.
3. Question: What is the recommended chest compression rate for adults?
- Answer: 100 to 120 compressions per minute.
- Rationale: Rates slower than 100/min may not provide sufficient blood flow, while rates faster than 120/min may not
allow for complete chest recoil and adequate ventricular filling.
4. Question: What is the maximum allowable interruption in chest compressions to assess rhythm or deliver a shock?
,- Answer: Less than 10 seconds.
- Rationale: Any pause in compressions rapidly decreases coronary perfusion pressure. Minimizing interruptions maintains
the pressure gradient needed for myocardial blood flow.
5. Question: What is the chest compression fraction (CCF) goal during a resuscitation?
- Answer: At least 60%, with a target of >80%.
- Rationale: CCF is the proportion of time during a cardiac arrest that compressions are performed. A higher CCF is
associated with improved survival to hospital discharge.
6. Question: How often should the compressor role be switched during CPR?
- Answer: Every 2 minutes (or sooner if fatigued).
- Rationale: Compressor fatigue begins within 1-2 minutes, leading to inadequate compression depth and rate. Switching
every 2-minute cycle ensures high-quality compressions.
7. Question: After an advanced airway is placed, how are ventilations delivered?
- Answer: 1 breath every 6 seconds (10 breaths per minute) without interrupting chest compressions.
- Rationale: Once a secure airway is established, compressions are continuous, and breaths are delivered asynchronously
to avoid hyperventilation and maintain perfusion pressure.
, 8. Question: What is the appropriate tidal volume for an adult patient in cardiac arrest with an advanced airway?
- Answer: Approximately 500-600 mL (to achieve visible chest rise).
- Rationale: Excessive tidal volumes or ventilation rates can lead to gastric inflation, increased intrathoracic pressure,
decreased venous return, and lower cardiac output.
9. Question: During CPR without an advanced airway, what is the compression-to-ventilation ratio for adults?
- Answer: 30:2.
- Rationale: This ratio minimizes interruptions in compressions while providing adequate ventilation for a patient without
a secured airway.
10. Question: What is the first assessment step when you encounter an unresponsive adult victim who is not breathing
normally?
- Answer: Check for responsiveness, simultaneously check for breathing and pulse (carotid), and activate the emergency
response system (or get an AED).
- Rationale: A rapid, simultaneous assessment identifies cardiac arrest quickly, minimizing the time to first compressions.
Agonal gasps are not normal breathing.
(ACLS)NEWEST COMPLETE QUESTIONS AND
CORRECT VERIFIED ANSWERS(DETAILED
ANSWERS)|ALREADY GRADED A+
,Section 1: Systematic Approach & High-Quality CPR
1. Question: What is the first step in the systematic approach to a suspected cardiac arrest?
- Answer: Verify scene safety.
- Rationale: The first step for any rescuer is to ensure the environment is safe for themselves, the victim, and bystanders
before making contact.
2. Question: What is the recommended chest compression depth for adults during CPR?
- Answer: At least 2 inches (5 cm).
- Rationale: Compressions of at least 2 inches (but no more than 2.4 inches) provide enough intrathoracic pressure to
generate adequate blood flow to the heart and brain.
3. Question: What is the recommended chest compression rate for adults?
- Answer: 100 to 120 compressions per minute.
- Rationale: Rates slower than 100/min may not provide sufficient blood flow, while rates faster than 120/min may not
allow for complete chest recoil and adequate ventricular filling.
4. Question: What is the maximum allowable interruption in chest compressions to assess rhythm or deliver a shock?
,- Answer: Less than 10 seconds.
- Rationale: Any pause in compressions rapidly decreases coronary perfusion pressure. Minimizing interruptions maintains
the pressure gradient needed for myocardial blood flow.
5. Question: What is the chest compression fraction (CCF) goal during a resuscitation?
- Answer: At least 60%, with a target of >80%.
- Rationale: CCF is the proportion of time during a cardiac arrest that compressions are performed. A higher CCF is
associated with improved survival to hospital discharge.
6. Question: How often should the compressor role be switched during CPR?
- Answer: Every 2 minutes (or sooner if fatigued).
- Rationale: Compressor fatigue begins within 1-2 minutes, leading to inadequate compression depth and rate. Switching
every 2-minute cycle ensures high-quality compressions.
7. Question: After an advanced airway is placed, how are ventilations delivered?
- Answer: 1 breath every 6 seconds (10 breaths per minute) without interrupting chest compressions.
- Rationale: Once a secure airway is established, compressions are continuous, and breaths are delivered asynchronously
to avoid hyperventilation and maintain perfusion pressure.
, 8. Question: What is the appropriate tidal volume for an adult patient in cardiac arrest with an advanced airway?
- Answer: Approximately 500-600 mL (to achieve visible chest rise).
- Rationale: Excessive tidal volumes or ventilation rates can lead to gastric inflation, increased intrathoracic pressure,
decreased venous return, and lower cardiac output.
9. Question: During CPR without an advanced airway, what is the compression-to-ventilation ratio for adults?
- Answer: 30:2.
- Rationale: This ratio minimizes interruptions in compressions while providing adequate ventilation for a patient without
a secured airway.
10. Question: What is the first assessment step when you encounter an unresponsive adult victim who is not breathing
normally?
- Answer: Check for responsiveness, simultaneously check for breathing and pulse (carotid), and activate the emergency
response system (or get an AED).
- Rationale: A rapid, simultaneous assessment identifies cardiac arrest quickly, minimizing the time to first compressions.
Agonal gasps are not normal breathing.
