BLS Quiz Questions And Answers
Question 1
What is the recommended compression rate for high-quality CPR in adults?
A) 60-80 compressions per minute
B) 80-100 compressions per minute
C) 100-120 compressions per minute
D) 120-140 compressions per minute
E) As fast as possible
Correct Answer: C) 100-120 compressions per minute
Rationale: Current guidelines recommend a compression rate of 100
to 120 compressions per minute for high-quality adult CPR.
Question 2
What is the minimum recommended compression depth for high-quality CPR
in adults?
A) At least 1 inch (2.5 cm)
B) At least 1.5 inches (3.8 cm)
C) At least 2 inches (5 cm)
D) At least 2.5 inches (6.4 cm)
E) At least 3 inches (7.6 cm)
Correct Answer: C) At least 2 inches (5 cm)
Rationale: High-quality chest compressions for adults should be
performed to a minimum depth of at least 2 inches (5 cm).
Question 3
What is the maximum recommended compression depth for high-quality CPR
in adults?
A) No more than 2 inches (5 cm)
B) No more than 2.4 inches (6 cm)
C) No more than 2.8 inches (7.1 cm)
D) No more than 3 inches (7.6 cm)
E) There is no maximum depth specified
,Correct Answer: B) No more than 2.4 inches (6 cm)
Rationale: While the minimum depth is 2 inches, compressions should
not exceed 2.4 inches (6 cm) to avoid potential injury.
Question 4
Which of the following is crucial for allowing adequate blood refill into the
heart during CPR?
A) Leaning on the chest between compressions
B) Performing rapid, shallow compressions
C) Ensuring complete chest recoil after each compression
D) Pausing for prolonged ventilations
E) Compressing only the lower half of the sternum
Correct Answer: C) Ensuring complete chest recoil after each
compression
Rationale: Complete chest recoil allows the heart to refill with blood
between compressions, which is essential for effective circulation.
Question 5
What is the recommended compression-to-ventilation ratio for adult CPR
when a single rescuer is performing CPR without an advanced airway?
A) 15:2
B) 30:2
C) 5:1
D) Continuous compressions with 1 breath every 6 seconds
E) 10:1
Correct Answer: B) 30:2
Rationale: For adult single-rescuer CPR, the recommended
compression-to-ventilation ratio is 30 compressions followed by 2
breaths.
Question 6
When should a rescuer minimize interruptions in chest compressions during
CPR?
,A) Only when applying the AED pads
B) Only during ventilations
C) As much as possible, aiming for less than 10 seconds per interruption
D) Only when switching rescuers
E) Interruptions are not a major concern if compressions are deep
Correct Answer: C) As much as possible, aiming for less than 10
seconds per interruption
Rationale: Minimizing interruptions in chest compressions (ideally to
less than 10 seconds) is critical for maintaining coronary and
cerebral perfusion.
Question 7
How should each ventilation be delivered during adult CPR?
A) A quick puff of air over less than 1 second
B) A slow breath over 2-3 seconds until the stomach rises
C) A breath over approximately 1 second, causing visible chest rise
D) A continuous flow of air without interruption
E) Deliver only one large breath every 30 compressions
Correct Answer: C) A breath over approximately 1 second, causing
visible chest rise
Rationale: Each rescue breath should be delivered over
approximately 1 second, with enough volume to cause visible chest
rise, but avoiding excessive ventilation.
Question 8
What is the first step when assessing an unresponsive adult to determine if
CPR is needed?
A) Check for a pulse immediately
B) Shout for help and activate the emergency response system
C) Look for normal breathing while checking for a pulse
D) Start chest compressions right away
E) Open the airway
, Correct Answer: C) Look for normal breathing while checking for a
pulse
Rationale: After confirming unresponsiveness, the rescuer should
simultaneously check for normal breathing and a pulse, taking no
more than 10 seconds.
Question 9
How long should a rescuer take to check for a pulse in an unresponsive adult
victim?
A) No more than 5 seconds
B) No more than 10 seconds
C) 15 seconds
D) 20 seconds
E) 30 seconds
Correct Answer: B) No more than 10 seconds
Rationale: The pulse check should be performed quickly, taking no
more than 10 seconds, to minimize delays in initiating CPR.
Question 10
What is the correct hand placement for chest compressions on an adult?
A) On the upper half of the sternum
B) On the lower half of the sternum, just above the xiphoid process
C) On the xiphoid process
D) On the ribs, just below the sternum
E) On the left nipple line
Correct Answer: B) On the lower half of the sternum, just above the
xiphoid process
Rationale: Correct hand placement is two hands on the lower half of
the sternum, ensuring not to compress over the xiphoid process.
Question 11
When should a rescuer activate the emergency response system for an
unresponsive adult victim outside of a hospital setting?
Question 1
What is the recommended compression rate for high-quality CPR in adults?
A) 60-80 compressions per minute
B) 80-100 compressions per minute
C) 100-120 compressions per minute
D) 120-140 compressions per minute
E) As fast as possible
Correct Answer: C) 100-120 compressions per minute
Rationale: Current guidelines recommend a compression rate of 100
to 120 compressions per minute for high-quality adult CPR.
Question 2
What is the minimum recommended compression depth for high-quality CPR
in adults?
A) At least 1 inch (2.5 cm)
B) At least 1.5 inches (3.8 cm)
C) At least 2 inches (5 cm)
D) At least 2.5 inches (6.4 cm)
E) At least 3 inches (7.6 cm)
Correct Answer: C) At least 2 inches (5 cm)
Rationale: High-quality chest compressions for adults should be
performed to a minimum depth of at least 2 inches (5 cm).
Question 3
What is the maximum recommended compression depth for high-quality CPR
in adults?
A) No more than 2 inches (5 cm)
B) No more than 2.4 inches (6 cm)
C) No more than 2.8 inches (7.1 cm)
D) No more than 3 inches (7.6 cm)
E) There is no maximum depth specified
,Correct Answer: B) No more than 2.4 inches (6 cm)
Rationale: While the minimum depth is 2 inches, compressions should
not exceed 2.4 inches (6 cm) to avoid potential injury.
Question 4
Which of the following is crucial for allowing adequate blood refill into the
heart during CPR?
A) Leaning on the chest between compressions
B) Performing rapid, shallow compressions
C) Ensuring complete chest recoil after each compression
D) Pausing for prolonged ventilations
E) Compressing only the lower half of the sternum
Correct Answer: C) Ensuring complete chest recoil after each
compression
Rationale: Complete chest recoil allows the heart to refill with blood
between compressions, which is essential for effective circulation.
Question 5
What is the recommended compression-to-ventilation ratio for adult CPR
when a single rescuer is performing CPR without an advanced airway?
A) 15:2
B) 30:2
C) 5:1
D) Continuous compressions with 1 breath every 6 seconds
E) 10:1
Correct Answer: B) 30:2
Rationale: For adult single-rescuer CPR, the recommended
compression-to-ventilation ratio is 30 compressions followed by 2
breaths.
Question 6
When should a rescuer minimize interruptions in chest compressions during
CPR?
,A) Only when applying the AED pads
B) Only during ventilations
C) As much as possible, aiming for less than 10 seconds per interruption
D) Only when switching rescuers
E) Interruptions are not a major concern if compressions are deep
Correct Answer: C) As much as possible, aiming for less than 10
seconds per interruption
Rationale: Minimizing interruptions in chest compressions (ideally to
less than 10 seconds) is critical for maintaining coronary and
cerebral perfusion.
Question 7
How should each ventilation be delivered during adult CPR?
A) A quick puff of air over less than 1 second
B) A slow breath over 2-3 seconds until the stomach rises
C) A breath over approximately 1 second, causing visible chest rise
D) A continuous flow of air without interruption
E) Deliver only one large breath every 30 compressions
Correct Answer: C) A breath over approximately 1 second, causing
visible chest rise
Rationale: Each rescue breath should be delivered over
approximately 1 second, with enough volume to cause visible chest
rise, but avoiding excessive ventilation.
Question 8
What is the first step when assessing an unresponsive adult to determine if
CPR is needed?
A) Check for a pulse immediately
B) Shout for help and activate the emergency response system
C) Look for normal breathing while checking for a pulse
D) Start chest compressions right away
E) Open the airway
, Correct Answer: C) Look for normal breathing while checking for a
pulse
Rationale: After confirming unresponsiveness, the rescuer should
simultaneously check for normal breathing and a pulse, taking no
more than 10 seconds.
Question 9
How long should a rescuer take to check for a pulse in an unresponsive adult
victim?
A) No more than 5 seconds
B) No more than 10 seconds
C) 15 seconds
D) 20 seconds
E) 30 seconds
Correct Answer: B) No more than 10 seconds
Rationale: The pulse check should be performed quickly, taking no
more than 10 seconds, to minimize delays in initiating CPR.
Question 10
What is the correct hand placement for chest compressions on an adult?
A) On the upper half of the sternum
B) On the lower half of the sternum, just above the xiphoid process
C) On the xiphoid process
D) On the ribs, just below the sternum
E) On the left nipple line
Correct Answer: B) On the lower half of the sternum, just above the
xiphoid process
Rationale: Correct hand placement is two hands on the lower half of
the sternum, ensuring not to compress over the xiphoid process.
Question 11
When should a rescuer activate the emergency response system for an
unresponsive adult victim outside of a hospital setting?
