1
BLS Test Questions and Answers
(AHA) Actual Exam 2026/2027 | Latest
AHA Guidelines | Pass Guaranteed -
A+ Graded
Section 1: High-Quality CPR Concepts
Questions 1-8
Question 1 According to the 2026/2027 AHA guidelines, what is the correct compression rate
for adult CPR?
A. 80-100 compressions per minute
B. 100-120 compressions per minute [CORRECT]
C. 120-140 compressions per minute
D. At least 140 compressions per minute
Correct Answer: B
Rationale: The 2026/2027 AHA guidelines maintain the recommendation of 100-120
compressions per minute for all ages (adults, children, and infants). This rate optimizes coronary
perfusion pressure while allowing adequate time for chest recoil. Option A (80-100) is too slow
and does not generate sufficient blood flow. Option C (120-140) and D (≥140) are excessive
rates that compromise compression depth and full chest recoil, reducing cardiac output. Studies
show rates above 120/min are associated with decreased survival outcomes.
Question 2 What is the recommended compression depth for adult CPR?
A. At least 1 inch (2.5 cm)
B. At least 2 inches (5 cm) [CORRECT]
C. At least 3 inches (7.5 cm)
D. 1-1.5 inches (2.5-4 cm)
,2
Correct Answer: B
Rationale: AHA guidelines recommend compressing the adult chest at least 2 inches (5 cm) but
not exceeding 2.4 inches (6 cm). This depth is necessary to compress the heart between the
sternum and spine, generating adequate stroke volume. Option A is insufficient for adult cardiac
output. Option C risks serious injury (cardiac rupture, liver laceration) without improving
perfusion. Option D describes infant/child depth, not adult.
Question 3 Why is it essential to allow full chest recoil between compressions?
A. It allows the heart to refill with blood [CORRECT]
B. It prevents rib fractures
C. It increases the compression rate
D. It is not clinically significant
Correct Answer: A
Rationale: Full chest recoil creates negative intrathoracic pressure that draws blood back into
the heart (ventricular filling), essential for generating adequate cardiac output in the next
compression. Leaning on the chest between compressions (incomplete recoil) reduces venous
return, coronary perfusion, and survival rates. Option B is incorrect—while recoil doesn't prevent
fractures, inadequate depth causes more harm. Option C is wrong as recoil doesn't affect rate.
Option D contradicts established resuscitation science.
Question 4 How often should rescuers switch compressor roles during 2-rescuer CPR to prevent
fatigue?
A. Every 1 minute
B. Every 2 minutes or 5 cycles [CORRECT]
C. Every 5 minutes
D. Only when the compressor requests a break
Correct Answer: B
Rationale: Rescuers should switch every 2 minutes (approximately 5 cycles of 30:2 CPR) to
maintain high-quality compressions. Research shows significant deterioration in compression
depth and rate after 1-2 minutes due to fatigue. Option A is too frequent and interrupts CPR
excessively. Option C is too long—compressions become ineffective. Option D is unsafe as
compressors often don't recognize their own fatigue.
Question 5 What is the maximum recommended interruption time for chest compressions?
, 3
A. Less than 5 seconds
B. Less than 10 seconds [CORRECT]
C. Less than 15 seconds
D. Less than 30 seconds
Correct Answer: B
Rationale: Interruptions should be limited to less than 10 seconds for pulse checks, rhythm
analysis, ventilation, or defibrillation. Longer interruptions cause rapid decline in coronary
perfusion pressure, requiring multiple compressions to rebuild. Option A is ideal but not always
practical. Options C and D are excessive—each second without compressions reduces survival
probability.
Question 6 During CPR, what is the recommended compression-to-ventilation ratio for a single
rescuer?
A. 15:2
B. 30:2 [CORRECT]
C. 15:1
D. 5:1
Correct Answer: B
Rationale: The 30:2 ratio for single-rescuer CPR (all ages) maximizes compressions while
providing minimal adequate ventilation. This ratio reduces interruptions and maintains coronary
perfusion pressure. Option A (15:2) is for two-rescuer child/infant CPR. Options C and D are
outdated ratios no longer recommended by AHA.
Question 7 A 45-year-old man collapses in the gym. You begin CPR. What is the correct hand
placement for chest compressions?
A. Upper half of the sternum
B. Lower half of the sternum [CORRECT]
C. Left side of the chest over the heart
D. Xiphoid process
Correct Answer: B
Rationale: Place the heel of one hand on the lower half of the sternum (center of chest, between
the nipples) with the other hand on top. This position compresses the heart against the spine.
Option A compresses the aortic arch ineffectively. Option C risks rib fractures and misses cardiac
compression. Option D (xiphoid) causes liver injury and ineffectual compressions.
BLS Test Questions and Answers
(AHA) Actual Exam 2026/2027 | Latest
AHA Guidelines | Pass Guaranteed -
A+ Graded
Section 1: High-Quality CPR Concepts
Questions 1-8
Question 1 According to the 2026/2027 AHA guidelines, what is the correct compression rate
for adult CPR?
A. 80-100 compressions per minute
B. 100-120 compressions per minute [CORRECT]
C. 120-140 compressions per minute
D. At least 140 compressions per minute
Correct Answer: B
Rationale: The 2026/2027 AHA guidelines maintain the recommendation of 100-120
compressions per minute for all ages (adults, children, and infants). This rate optimizes coronary
perfusion pressure while allowing adequate time for chest recoil. Option A (80-100) is too slow
and does not generate sufficient blood flow. Option C (120-140) and D (≥140) are excessive
rates that compromise compression depth and full chest recoil, reducing cardiac output. Studies
show rates above 120/min are associated with decreased survival outcomes.
Question 2 What is the recommended compression depth for adult CPR?
A. At least 1 inch (2.5 cm)
B. At least 2 inches (5 cm) [CORRECT]
C. At least 3 inches (7.5 cm)
D. 1-1.5 inches (2.5-4 cm)
,2
Correct Answer: B
Rationale: AHA guidelines recommend compressing the adult chest at least 2 inches (5 cm) but
not exceeding 2.4 inches (6 cm). This depth is necessary to compress the heart between the
sternum and spine, generating adequate stroke volume. Option A is insufficient for adult cardiac
output. Option C risks serious injury (cardiac rupture, liver laceration) without improving
perfusion. Option D describes infant/child depth, not adult.
Question 3 Why is it essential to allow full chest recoil between compressions?
A. It allows the heart to refill with blood [CORRECT]
B. It prevents rib fractures
C. It increases the compression rate
D. It is not clinically significant
Correct Answer: A
Rationale: Full chest recoil creates negative intrathoracic pressure that draws blood back into
the heart (ventricular filling), essential for generating adequate cardiac output in the next
compression. Leaning on the chest between compressions (incomplete recoil) reduces venous
return, coronary perfusion, and survival rates. Option B is incorrect—while recoil doesn't prevent
fractures, inadequate depth causes more harm. Option C is wrong as recoil doesn't affect rate.
Option D contradicts established resuscitation science.
Question 4 How often should rescuers switch compressor roles during 2-rescuer CPR to prevent
fatigue?
A. Every 1 minute
B. Every 2 minutes or 5 cycles [CORRECT]
C. Every 5 minutes
D. Only when the compressor requests a break
Correct Answer: B
Rationale: Rescuers should switch every 2 minutes (approximately 5 cycles of 30:2 CPR) to
maintain high-quality compressions. Research shows significant deterioration in compression
depth and rate after 1-2 minutes due to fatigue. Option A is too frequent and interrupts CPR
excessively. Option C is too long—compressions become ineffective. Option D is unsafe as
compressors often don't recognize their own fatigue.
Question 5 What is the maximum recommended interruption time for chest compressions?
, 3
A. Less than 5 seconds
B. Less than 10 seconds [CORRECT]
C. Less than 15 seconds
D. Less than 30 seconds
Correct Answer: B
Rationale: Interruptions should be limited to less than 10 seconds for pulse checks, rhythm
analysis, ventilation, or defibrillation. Longer interruptions cause rapid decline in coronary
perfusion pressure, requiring multiple compressions to rebuild. Option A is ideal but not always
practical. Options C and D are excessive—each second without compressions reduces survival
probability.
Question 6 During CPR, what is the recommended compression-to-ventilation ratio for a single
rescuer?
A. 15:2
B. 30:2 [CORRECT]
C. 15:1
D. 5:1
Correct Answer: B
Rationale: The 30:2 ratio for single-rescuer CPR (all ages) maximizes compressions while
providing minimal adequate ventilation. This ratio reduces interruptions and maintains coronary
perfusion pressure. Option A (15:2) is for two-rescuer child/infant CPR. Options C and D are
outdated ratios no longer recommended by AHA.
Question 7 A 45-year-old man collapses in the gym. You begin CPR. What is the correct hand
placement for chest compressions?
A. Upper half of the sternum
B. Lower half of the sternum [CORRECT]
C. Left side of the chest over the heart
D. Xiphoid process
Correct Answer: B
Rationale: Place the heel of one hand on the lower half of the sternum (center of chest, between
the nipples) with the other hand on top. This position compresses the heart against the spine.
Option A compresses the aortic arch ineffectively. Option C risks rib fractures and misses cardiac
compression. Option D (xiphoid) causes liver injury and ineffectual compressions.
