ACLS & CPR Premium Exam Test Bank: High-Yield
Questions with Verified Answers and Explanations
Harvard Medical School
This premium, high-yield study resource contains 300 comprehensive multiple-choice questions
meticulously designed for advanced life support and resuscitation exam preparation. Each question
features a verified, up-to-date correct answer integrated seamlessly with a detailed, bolded explanation
to optimize active recall and retention. Perfect for medical, nursing, and emergency care students, this
test bank serves as an essential tool for mastering critical protocol differences and clinical interventions
Question 1
During adult cardiopulmonary resuscitation (CPR), what is the optimal compression rate
per minute to maximize coronary perfusion pressure and clinical outcomes?
A) 80 to 100 compressions per minute
B) 100 to 120 compressions per minute
C) 120 to 140 compressions per minute
D) Over 140 compressions per minute
ANSWER: B) 100 to 120 compressions per minute
EXPLANATION: Resuscitation guidelines state that an adult compression rate of
100 to 120 beats per minute is linked to higher survival rates. Compressions
below 100/min fail to generate adequate blood flow, while rates exceeding
120/min significantly decrease the chest recoil time, leading to lower cardiac
output.
Question 2
When performing high-quality CPR on an adult patient, what is the recommended
minimum target depth for chest compressions while avoiding structural injury?
A) 1.5 inches (4 cm)
B) 2.0 inches (5 cm)
C) 2.5 inches (6 cm)
D) 3.0 inches (7.5 cm)
ANSWER: B) 2.0 inches (5 cm)
EXPLANATION: Effective adult CPR requires a compression depth of at least 2
inches (5 cm) but should not exceed 2.4 inches (6 cm). Pushing less than 2
inches does not squeeze the heart enough to circulate oxygenated blood to vital
,organs, whereas pushing past 2.4 inches exponentially increases the risk of
severe chest wall injuries and internal trauma.
Question 3
Which rhythm identified during a cardiac arrest event is classified as shockable by an
Automated External Defibrillator (AED)?
A) Asystole
B) Pulseless Electrical Activity (PEA)
C) Pulseless Ventricular Tachycardia (pVT)
D) Normal Sinus Rhythm
ANSWER: C) Pulseless Ventricular Tachycardia (pVT)
EXPLANATION: An AED delivers a therapeutic electrical shock exclusively to
treat uncoordinated, lethal ventricular rhythms, which are Pulseless Ventricular
Tachycardia (pVT) and Ventricular Fibrillation (VF). Asystole and Pulseless
Electrical Activity (PEA) are non-shockable rhythms requiring immediate,
uninterrupted manual CPR and epinephrine administration.
Question 4
What is the primary physiological purpose of allowing complete chest wall recoil
between individual chest compressions?
A) To lower the rescuer's physical fatigue during a cycle
B) To maximize venous blood return to the heart chambers
C) To prevent the occurrence of rib or sternum fractures
D) To clear fluid or mucus obstructions from the airway
ANSWER: B) To maximize venous blood return to the heart chambers
EXPLANATION: Allowing the chest wall to recoil fully creates a negative
intrathoracic pressure. This pressure draws systemic venous blood back into the
chambers of the heart. Leaning on the chest during CPR stops full recoil,
dramatically reduces cardiac refill volume, and impairs downstream blood flow to
the brain and heart muscle.
Question 5
When two healthcare providers are performing coordinated CPR on an infant, what is
the correct compression-to-ventilation ratio?
,A) 30 compressions to 2 breaths
B) 15 compressions to 2 breaths
C) 5 compressions to 1 breath
D) 3 compressions to 1 breath
ANSWER: B) 15 compressions to 2 breaths
EXPLANATION: For infant and child cardiac arrest, a two-rescuer team must
utilize a 15:2 compression-to-ventilation ratio to prioritize ventilation, as
respiratory failure is the primary cause of pediatric arrest. If a single rescuer is
performing CPR alone on an infant, the ratio reverts back to 30:2 to accommodate
the logistical challenge of moving between the chest and the airway.
Question 6
What is the immediate, priority action a single rescuer must take upon discovering an
unresponsive adult victim who is not breathing or only gasping?
A) Open the victim's airway using the head-tilt/chin-lift maneuver
B) Deliver two rescue breaths immediately using a barrier shield
C) Activate the emergency response system and retrieve the AED
D) Perform an immediate finger sweep of the mouth to check for foreign bodies
ANSWER: C) Activate the emergency response system and retrieve the AED
EXPLANATION: Immediate activation of emergency medical services (EMS) and
fetching an AED is the foundational first step for an adult victim. Early advanced
notification and rapid defibrillation are the primary determinants of survival,
preceding any physical intervention or ventilation attempts.
Question 7
During an advanced life support scenario, an endotracheal tube is successfully placed.
How should ventilations be delivered alongside continuous chest compressions?
A) 1 breath every 2 to 3 seconds
B) 1 breath every 6 seconds (10 breaths per minute)
C) 2 breaths after every group of 30 chest compressions
D) 2 breaths after every group of 15 chest compressions
ANSWER: B) 1 breath every 6 seconds (10 breaths per minute)
EXPLANATION: Once an advanced airway (such as an endotracheal tube or
supraglottic device) is placed, compressions become continuous without pauses
for breath. The second rescuer must deliver exactly 1 breath every 6 seconds,
which translates to a steady 10 breaths per minute, avoiding hyperventilation
which reduces venous return.
, Question 8
Which of the following techniques is the most effective method for a healthcare
professional to confirm correct placement of an advanced airway device during cardiac
arrest?
A) Checking for bilateral chest rise and fall
B) Auscultating the stomach for gurgling sounds
C) Continuous waveform capnography
D) Observing moisture or condensation inside the tube
ANSWER: C) Continuous waveform capnography
EXPLANATION: Continuous waveform capnography is the objective gold
standard for confirming and monitoring proper endotracheal tube placement. It
measures carbon dioxide levels exhaled from the lungs. Visual chest rise and
breath sounds are unreliable secondary methods that can easily mask improper
esophageal intubation.
Question 9
What action should a rescuer take if an adult cardiac arrest victim has a transdermal
medication patch attached directly to their chest where an AED pad must be placed?
A) Place the AED pad directly over the medication patch
B) Remove the patch and wipe the area clean before applying the pad
C) Apply the AED pad 4 inches below the medication patch location
D) Refuse to use the AED entirely to prevent chemical burns
ANSWER: B) Remove the patch and wipe the area clean before applying the pad
EXPLANATION: Transdermal patches can block the delivery of the electrical
current from the AED pad to the heart. This can cause severe skin burns to the
patient and alter energy delivery. Rescuers must quickly pull off the patch and
wipe the chest dry before applying the electrode pad.
Question 10
Under what clinical circumstance should a rescuer utilize the jaw-thrust maneuver
instead of the standard head-tilt/chin-lift maneuver to open a patient's airway?
A) When the victim is an infant under one year old
B) When the victim is suspected of having a cervical spine injury
Questions with Verified Answers and Explanations
Harvard Medical School
This premium, high-yield study resource contains 300 comprehensive multiple-choice questions
meticulously designed for advanced life support and resuscitation exam preparation. Each question
features a verified, up-to-date correct answer integrated seamlessly with a detailed, bolded explanation
to optimize active recall and retention. Perfect for medical, nursing, and emergency care students, this
test bank serves as an essential tool for mastering critical protocol differences and clinical interventions
Question 1
During adult cardiopulmonary resuscitation (CPR), what is the optimal compression rate
per minute to maximize coronary perfusion pressure and clinical outcomes?
A) 80 to 100 compressions per minute
B) 100 to 120 compressions per minute
C) 120 to 140 compressions per minute
D) Over 140 compressions per minute
ANSWER: B) 100 to 120 compressions per minute
EXPLANATION: Resuscitation guidelines state that an adult compression rate of
100 to 120 beats per minute is linked to higher survival rates. Compressions
below 100/min fail to generate adequate blood flow, while rates exceeding
120/min significantly decrease the chest recoil time, leading to lower cardiac
output.
Question 2
When performing high-quality CPR on an adult patient, what is the recommended
minimum target depth for chest compressions while avoiding structural injury?
A) 1.5 inches (4 cm)
B) 2.0 inches (5 cm)
C) 2.5 inches (6 cm)
D) 3.0 inches (7.5 cm)
ANSWER: B) 2.0 inches (5 cm)
EXPLANATION: Effective adult CPR requires a compression depth of at least 2
inches (5 cm) but should not exceed 2.4 inches (6 cm). Pushing less than 2
inches does not squeeze the heart enough to circulate oxygenated blood to vital
,organs, whereas pushing past 2.4 inches exponentially increases the risk of
severe chest wall injuries and internal trauma.
Question 3
Which rhythm identified during a cardiac arrest event is classified as shockable by an
Automated External Defibrillator (AED)?
A) Asystole
B) Pulseless Electrical Activity (PEA)
C) Pulseless Ventricular Tachycardia (pVT)
D) Normal Sinus Rhythm
ANSWER: C) Pulseless Ventricular Tachycardia (pVT)
EXPLANATION: An AED delivers a therapeutic electrical shock exclusively to
treat uncoordinated, lethal ventricular rhythms, which are Pulseless Ventricular
Tachycardia (pVT) and Ventricular Fibrillation (VF). Asystole and Pulseless
Electrical Activity (PEA) are non-shockable rhythms requiring immediate,
uninterrupted manual CPR and epinephrine administration.
Question 4
What is the primary physiological purpose of allowing complete chest wall recoil
between individual chest compressions?
A) To lower the rescuer's physical fatigue during a cycle
B) To maximize venous blood return to the heart chambers
C) To prevent the occurrence of rib or sternum fractures
D) To clear fluid or mucus obstructions from the airway
ANSWER: B) To maximize venous blood return to the heart chambers
EXPLANATION: Allowing the chest wall to recoil fully creates a negative
intrathoracic pressure. This pressure draws systemic venous blood back into the
chambers of the heart. Leaning on the chest during CPR stops full recoil,
dramatically reduces cardiac refill volume, and impairs downstream blood flow to
the brain and heart muscle.
Question 5
When two healthcare providers are performing coordinated CPR on an infant, what is
the correct compression-to-ventilation ratio?
,A) 30 compressions to 2 breaths
B) 15 compressions to 2 breaths
C) 5 compressions to 1 breath
D) 3 compressions to 1 breath
ANSWER: B) 15 compressions to 2 breaths
EXPLANATION: For infant and child cardiac arrest, a two-rescuer team must
utilize a 15:2 compression-to-ventilation ratio to prioritize ventilation, as
respiratory failure is the primary cause of pediatric arrest. If a single rescuer is
performing CPR alone on an infant, the ratio reverts back to 30:2 to accommodate
the logistical challenge of moving between the chest and the airway.
Question 6
What is the immediate, priority action a single rescuer must take upon discovering an
unresponsive adult victim who is not breathing or only gasping?
A) Open the victim's airway using the head-tilt/chin-lift maneuver
B) Deliver two rescue breaths immediately using a barrier shield
C) Activate the emergency response system and retrieve the AED
D) Perform an immediate finger sweep of the mouth to check for foreign bodies
ANSWER: C) Activate the emergency response system and retrieve the AED
EXPLANATION: Immediate activation of emergency medical services (EMS) and
fetching an AED is the foundational first step for an adult victim. Early advanced
notification and rapid defibrillation are the primary determinants of survival,
preceding any physical intervention or ventilation attempts.
Question 7
During an advanced life support scenario, an endotracheal tube is successfully placed.
How should ventilations be delivered alongside continuous chest compressions?
A) 1 breath every 2 to 3 seconds
B) 1 breath every 6 seconds (10 breaths per minute)
C) 2 breaths after every group of 30 chest compressions
D) 2 breaths after every group of 15 chest compressions
ANSWER: B) 1 breath every 6 seconds (10 breaths per minute)
EXPLANATION: Once an advanced airway (such as an endotracheal tube or
supraglottic device) is placed, compressions become continuous without pauses
for breath. The second rescuer must deliver exactly 1 breath every 6 seconds,
which translates to a steady 10 breaths per minute, avoiding hyperventilation
which reduces venous return.
, Question 8
Which of the following techniques is the most effective method for a healthcare
professional to confirm correct placement of an advanced airway device during cardiac
arrest?
A) Checking for bilateral chest rise and fall
B) Auscultating the stomach for gurgling sounds
C) Continuous waveform capnography
D) Observing moisture or condensation inside the tube
ANSWER: C) Continuous waveform capnography
EXPLANATION: Continuous waveform capnography is the objective gold
standard for confirming and monitoring proper endotracheal tube placement. It
measures carbon dioxide levels exhaled from the lungs. Visual chest rise and
breath sounds are unreliable secondary methods that can easily mask improper
esophageal intubation.
Question 9
What action should a rescuer take if an adult cardiac arrest victim has a transdermal
medication patch attached directly to their chest where an AED pad must be placed?
A) Place the AED pad directly over the medication patch
B) Remove the patch and wipe the area clean before applying the pad
C) Apply the AED pad 4 inches below the medication patch location
D) Refuse to use the AED entirely to prevent chemical burns
ANSWER: B) Remove the patch and wipe the area clean before applying the pad
EXPLANATION: Transdermal patches can block the delivery of the electrical
current from the AED pad to the heart. This can cause severe skin burns to the
patient and alter energy delivery. Rescuers must quickly pull off the patch and
wipe the chest dry before applying the electrode pad.
Question 10
Under what clinical circumstance should a rescuer utilize the jaw-thrust maneuver
instead of the standard head-tilt/chin-lift maneuver to open a patient's airway?
A) When the victim is an infant under one year old
B) When the victim is suspected of having a cervical spine injury
