BLS FINAL EXAM – 2026 ACTUAL EXAM
VERIFIED QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES | BASIC LIFE SUPPORT CERTIFICATION FINAL
ASSESSMENT | A+ GRADED | BASED ON LATEST AHA
GUIDELINES
INTRODUCTION
This comprehensive document contains 250 fully verified and updated questions
with 100% correct answers and detailed clinical rationales for the Basic Life
Support (BLS) Final Exam for the 2026 certification cycle. Based on the latest
American Heart Association (AHA) guidelines, it covers all essential domains
including adult, child, and infant CPR techniques and compression-to-ventilation
ratios, single-rescuer and team-based resuscitation protocols, AED operation
and safety, relief of foreign-body airway obstruction (choking) for all age
groups, bag-mask ventilation techniques, rescue breathing, advanced airway
considerations, special resuscitation situations (drowning, hypothermia,
pregnancy, opioid overdose), and team dynamics with effective communication
during cardiac arrest scenarios. Each answer is A+ graded with detailed
rationales explaining the physiological rationale, guideline recommendations,
and clinical decision-making to ensure healthcare providers achieve
confidence in life-saving skills and successful BLS recertification.
SECTION 1: BLS CORE CONCEPTS AND ASSESSMENT (Questions 1-30)
Q1. What is the first step in the BLS assessment of an unresponsive adult?
A) Check for breathing
B) Ensure scene safety and check responsiveness
C) Start chest compressions
D) Attach an AED
Answer: B
Rationale: The first step in the BLS algorithm is to ensure the scene is safe
(protect yourself and the patient), then check the patient's responsiveness
by tapping and shouting. Only after confirming unresponsiveness do you
progress to checking breathing and pulse, then activate emergency response
and begin CPR. Scene safety is paramount to prevent rescuer injury.
1
,Q2. What is the compression-to-ventilation ratio for adult single-rescuer CPR?
A) 15:1
B) 30:2
C) 15:2
D) 30:1
Answer: B
Rationale: The current AHA guideline for adult single-rescuer CPR is 30
compressions to 2 ventilations. This ratio maximizes coronary perfusion
pressure while providing adequate ventilation. The 15:2 ratio (A) is used
for neonatal resuscitation and in some two-rescuer scenarios for pediatric
patients; 15:2 (C) is outdated for adults; 30:1 (D) does not provide
adequate ventilation.
Q3. What is the recommended compression depth for an adult during CPR?
A) At least 1 inch (2.5 cm)
B) At least 2 inches (5 cm)
C) At least 3 inches (7.5 cm)
D) At least 4 inches (10 cm)
Answer: B
Rationale: The AHA recommends a compression depth of at least 2 inches
(5 cm) but no more than 2.4 inches (6 cm) for adults. This depth ensures
adequate cardiac output. Less than 2 inches (A) is inadequate; more than
2.4 inches increases the risk of injury (rib fractures, internal organ
damage) without additional benefit.
Q4. What is the recommended compression rate for adult CPR?
A) 60-80 compressions per minute
B) 80-100 compressions per minute
C) 100-120 compressions per minute
D) 120-140 compressions per minute
2
,Answer: C
Rationale: The AHA recommends a compression rate of 100-120 compressions
per minute. Rates below 100 (A, B) are insufficient to maintain perfusion;
rates above 120 (D) may cause incomplete recoil and reduced coronary
perfusion. Using the beat of "Stayin' Alive" by the Bee Gees helps achieve
this rate (103 bpm).
Q5. How should a rescuer check for breathing in an unresponsive adult?
A) Look, listen, and feel for breathing for at least 5 seconds but no more
than 10 seconds
B) Look, listen, and feel for breathing for 1-2 seconds
C) Check breathing by listening only
D) Assume the patient is breathing if they have a pulse
Answer: A
Rationale: The rescuer should look for chest rise, listen for breath sounds,
and feel for air movement for at least 5 seconds but no more than 10 seconds.
If the patient is not breathing or only gasping, begin CPR. Shorter than
5 seconds (B) may miss apnea; listening only (C) is incomplete; pulse does
not ensure breathing (D).
Q6. What is the correct sequence for the BLS adult chain of survival?
A) Recognition and activation, CPR, defibrillation, advanced care
B) CPR, defibrillation, recognition, advanced care
C) Defibrillation, CPR, recognition, advanced care
D) Advanced care, defibrillation, CPR, recognition
Answer: A
Rationale: The adult chain of survival is: 1) Early recognition and activation
of emergency response, 2) Early CPR with emphasis on chest compressions,
3) Early defibrillation, and 4) Early advanced life support. This sequence
maximizes survival from cardiac arrest. B, C, and D are incorrect sequences.
3
, Q7. What is the correct BLS sequence for a healthcare provider responding
to an unresponsive adult?
A) Activate EMS, check pulse, start CPR, attach AED
B) Check responsiveness, activate EMS/get AED, check pulse, start CPR
C) Start CPR immediately, check pulse, activate EMS
D) Attach AED first, then check pulse
Answer: B
Rationale: The correct sequence is: 1) Verify scene safety and check
responsiveness, 2) Activate emergency response system and get AED,
3) Check pulse (no more than 10 seconds), 4) Begin CPR starting with
compressions, 5) Attach AED as soon as available. This is the AHA-recommended
BLS algorithm for healthcare providers.
Q8. A healthcare provider should check for a pulse in an adult victim for
no more than:
A) 5 seconds
B) 10 seconds
C) 15 seconds
D) 30 seconds
Answer: B
Rationale: The pulse check should be no more than 10 seconds. If a pulse is
not definitively felt within 10 seconds, begin CPR immediately. Prolonged
pulse checks delay chest compressions and reduce survival. Carotid pulse
is the preferred site for adults.
Q9. What is the preferred pulse check site for an adult?
A) Radial artery
B) Brachial artery
C) Carotid artery
D) Femoral artery
4
VERIFIED QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES | BASIC LIFE SUPPORT CERTIFICATION FINAL
ASSESSMENT | A+ GRADED | BASED ON LATEST AHA
GUIDELINES
INTRODUCTION
This comprehensive document contains 250 fully verified and updated questions
with 100% correct answers and detailed clinical rationales for the Basic Life
Support (BLS) Final Exam for the 2026 certification cycle. Based on the latest
American Heart Association (AHA) guidelines, it covers all essential domains
including adult, child, and infant CPR techniques and compression-to-ventilation
ratios, single-rescuer and team-based resuscitation protocols, AED operation
and safety, relief of foreign-body airway obstruction (choking) for all age
groups, bag-mask ventilation techniques, rescue breathing, advanced airway
considerations, special resuscitation situations (drowning, hypothermia,
pregnancy, opioid overdose), and team dynamics with effective communication
during cardiac arrest scenarios. Each answer is A+ graded with detailed
rationales explaining the physiological rationale, guideline recommendations,
and clinical decision-making to ensure healthcare providers achieve
confidence in life-saving skills and successful BLS recertification.
SECTION 1: BLS CORE CONCEPTS AND ASSESSMENT (Questions 1-30)
Q1. What is the first step in the BLS assessment of an unresponsive adult?
A) Check for breathing
B) Ensure scene safety and check responsiveness
C) Start chest compressions
D) Attach an AED
Answer: B
Rationale: The first step in the BLS algorithm is to ensure the scene is safe
(protect yourself and the patient), then check the patient's responsiveness
by tapping and shouting. Only after confirming unresponsiveness do you
progress to checking breathing and pulse, then activate emergency response
and begin CPR. Scene safety is paramount to prevent rescuer injury.
1
,Q2. What is the compression-to-ventilation ratio for adult single-rescuer CPR?
A) 15:1
B) 30:2
C) 15:2
D) 30:1
Answer: B
Rationale: The current AHA guideline for adult single-rescuer CPR is 30
compressions to 2 ventilations. This ratio maximizes coronary perfusion
pressure while providing adequate ventilation. The 15:2 ratio (A) is used
for neonatal resuscitation and in some two-rescuer scenarios for pediatric
patients; 15:2 (C) is outdated for adults; 30:1 (D) does not provide
adequate ventilation.
Q3. What is the recommended compression depth for an adult during CPR?
A) At least 1 inch (2.5 cm)
B) At least 2 inches (5 cm)
C) At least 3 inches (7.5 cm)
D) At least 4 inches (10 cm)
Answer: B
Rationale: The AHA recommends a compression depth of at least 2 inches
(5 cm) but no more than 2.4 inches (6 cm) for adults. This depth ensures
adequate cardiac output. Less than 2 inches (A) is inadequate; more than
2.4 inches increases the risk of injury (rib fractures, internal organ
damage) without additional benefit.
Q4. What is the recommended compression rate for adult CPR?
A) 60-80 compressions per minute
B) 80-100 compressions per minute
C) 100-120 compressions per minute
D) 120-140 compressions per minute
2
,Answer: C
Rationale: The AHA recommends a compression rate of 100-120 compressions
per minute. Rates below 100 (A, B) are insufficient to maintain perfusion;
rates above 120 (D) may cause incomplete recoil and reduced coronary
perfusion. Using the beat of "Stayin' Alive" by the Bee Gees helps achieve
this rate (103 bpm).
Q5. How should a rescuer check for breathing in an unresponsive adult?
A) Look, listen, and feel for breathing for at least 5 seconds but no more
than 10 seconds
B) Look, listen, and feel for breathing for 1-2 seconds
C) Check breathing by listening only
D) Assume the patient is breathing if they have a pulse
Answer: A
Rationale: The rescuer should look for chest rise, listen for breath sounds,
and feel for air movement for at least 5 seconds but no more than 10 seconds.
If the patient is not breathing or only gasping, begin CPR. Shorter than
5 seconds (B) may miss apnea; listening only (C) is incomplete; pulse does
not ensure breathing (D).
Q6. What is the correct sequence for the BLS adult chain of survival?
A) Recognition and activation, CPR, defibrillation, advanced care
B) CPR, defibrillation, recognition, advanced care
C) Defibrillation, CPR, recognition, advanced care
D) Advanced care, defibrillation, CPR, recognition
Answer: A
Rationale: The adult chain of survival is: 1) Early recognition and activation
of emergency response, 2) Early CPR with emphasis on chest compressions,
3) Early defibrillation, and 4) Early advanced life support. This sequence
maximizes survival from cardiac arrest. B, C, and D are incorrect sequences.
3
, Q7. What is the correct BLS sequence for a healthcare provider responding
to an unresponsive adult?
A) Activate EMS, check pulse, start CPR, attach AED
B) Check responsiveness, activate EMS/get AED, check pulse, start CPR
C) Start CPR immediately, check pulse, activate EMS
D) Attach AED first, then check pulse
Answer: B
Rationale: The correct sequence is: 1) Verify scene safety and check
responsiveness, 2) Activate emergency response system and get AED,
3) Check pulse (no more than 10 seconds), 4) Begin CPR starting with
compressions, 5) Attach AED as soon as available. This is the AHA-recommended
BLS algorithm for healthcare providers.
Q8. A healthcare provider should check for a pulse in an adult victim for
no more than:
A) 5 seconds
B) 10 seconds
C) 15 seconds
D) 30 seconds
Answer: B
Rationale: The pulse check should be no more than 10 seconds. If a pulse is
not definitively felt within 10 seconds, begin CPR immediately. Prolonged
pulse checks delay chest compressions and reduce survival. Carotid pulse
is the preferred site for adults.
Q9. What is the preferred pulse check site for an adult?
A) Radial artery
B) Brachial artery
C) Carotid artery
D) Femoral artery
4
