BLS Quiz High Quality CPR for Adults
ACTUAL EXAM 2026/2027 | BLS Adult
High Quality CPR | Verified Q&A | Pass
Guaranteed - A+ Graded
Section 1: Compression Technique & Depth
Q1: What is the correct hand placement for chest compressions on an adult victim?
A. On the upper half of the sternum, directly between the nipples.
B. On the xiphoid process at the tip of the sternum.
C. On the lower half of the sternum, in the center of the chest. [CORRECT]
D. On the left side of the chest, directly over the heart apex.
Correct Answer: C
Rationale: The AHA guidelines specify placing the heel of one hand on the lower half of the sternum
(breastbone) and the other hand on top. This ensures the force of compressions is directed over the
heart pump mechanism while avoiding the xiphoid process (Option B), which can cause liver laceration.
Option A is too high, and Option D is ineffective for generating cardiac output via the thoracic pump
theory.
Q2: What is the recommended compression depth for high-quality CPR in an adult victim?
A. At least 1.5 inches (4 cm).
B. At least 2 inches (5 cm) but not exceeding 2.4 inches (6 cm). [CORRECT]
C. Approximately 1 to 1.5 inches (2.5 to 4 cm).
D. As deep as physically possible, regardless of resistance.
,Correct Answer: B
Rationale: The 2020/2026 guidelines require a depth of at least 2 inches (5 cm). However, depths
exceeding 2.4 inches (6 cm) may cause injury to the patient (ribs, liver, lungs). Option A is the depth for a
child, and Option C is the depth for an infant. Compressions must be deep enough to generate blood
flow but within the safe upper limit.
Q3: While performing CPR, you notice the chest does not fully return to its normal position between
compressions. What is the likely consequence?
A. Increased blood flow to the brain.
B. Reduced venous return to the heart. [CORRECT]
C. Higher coronary artery perfusion pressure.
D. Faster fatigue for the rescuer.
Correct Answer: B
Rationale: Complete chest recoil is essential because it allows blood to flow back into the heart (venous
return) via negative intrathoracic pressure. If the rescuer leans on the chest (incomplete recoil), the
heart cannot fill properly before the next compression, significantly reducing cardiac output and
coronary perfusion pressure.
Q4: Which technique best ensures that chest compressions are effective and meet the depth
requirement?
A. Using only one hand to prevent pushing too deep.
B. Keeping elbows bent to absorb the shock.
C. Keeping the arms straight and shoulders directly over the hands, allowing the upper body weight to
drive compressions. [CORRECT]
D. Compressing rapidly with a bouncing motion to build momentum.
Correct Answer: C
, Rationale: Proper mechanics involve straight arms and shoulders aligned over the hands. This allows the
rescuer to use their upper body weight (gravity) to achieve the necessary depth without rapid fatigue.
Bent elbows (Option B) reduce force transmission, and a bouncing motion (Option D) is ineffective and
unsafe.
Q5: A rate-controlling device (metronome or feedback monitor) indicates you are compressing at 130
beats per minute. What corrective action is necessary?
A. Continue at this rate; faster compressions increase survival.
B. Slow down to a rate of 100 to 120 compressions per minute. [CORRECT]
C. Speed up to ensure the heart pumps enough blood.
D. Stop compressions to check for a pulse.
Correct Answer: B
Rationale: The target rate is 100–120 compressions per minute. Rates exceeding 120 bpm (like 130 bpm)
reduce the time for chest recoil and filling, often resulting in shallower compressions and lower blood
flow. The rescuer must adjust their rhythm to fall within the optimal range.
Q6: Why is it critical to minimize interruptions in chest compressions (limiting them to less than 10
seconds)?
A. To prevent the rescuer from getting tired.
B. To maintain coronary perfusion pressure and blood flow to vital organs. [CORRECT]
C. To ensure the AED charges faster.
D. To allow the patient to regain consciousness more quickly.
Correct Answer: B
Rationale: Every time compressions stop, the blood pressure drops to zero. It takes time to rebuild
pressure when compressions restart. Minimizing interruptions maintains blood flow to the brain and
heart, increasing the likelihood of return of spontaneous circulation (ROSC).
ACTUAL EXAM 2026/2027 | BLS Adult
High Quality CPR | Verified Q&A | Pass
Guaranteed - A+ Graded
Section 1: Compression Technique & Depth
Q1: What is the correct hand placement for chest compressions on an adult victim?
A. On the upper half of the sternum, directly between the nipples.
B. On the xiphoid process at the tip of the sternum.
C. On the lower half of the sternum, in the center of the chest. [CORRECT]
D. On the left side of the chest, directly over the heart apex.
Correct Answer: C
Rationale: The AHA guidelines specify placing the heel of one hand on the lower half of the sternum
(breastbone) and the other hand on top. This ensures the force of compressions is directed over the
heart pump mechanism while avoiding the xiphoid process (Option B), which can cause liver laceration.
Option A is too high, and Option D is ineffective for generating cardiac output via the thoracic pump
theory.
Q2: What is the recommended compression depth for high-quality CPR in an adult victim?
A. At least 1.5 inches (4 cm).
B. At least 2 inches (5 cm) but not exceeding 2.4 inches (6 cm). [CORRECT]
C. Approximately 1 to 1.5 inches (2.5 to 4 cm).
D. As deep as physically possible, regardless of resistance.
,Correct Answer: B
Rationale: The 2020/2026 guidelines require a depth of at least 2 inches (5 cm). However, depths
exceeding 2.4 inches (6 cm) may cause injury to the patient (ribs, liver, lungs). Option A is the depth for a
child, and Option C is the depth for an infant. Compressions must be deep enough to generate blood
flow but within the safe upper limit.
Q3: While performing CPR, you notice the chest does not fully return to its normal position between
compressions. What is the likely consequence?
A. Increased blood flow to the brain.
B. Reduced venous return to the heart. [CORRECT]
C. Higher coronary artery perfusion pressure.
D. Faster fatigue for the rescuer.
Correct Answer: B
Rationale: Complete chest recoil is essential because it allows blood to flow back into the heart (venous
return) via negative intrathoracic pressure. If the rescuer leans on the chest (incomplete recoil), the
heart cannot fill properly before the next compression, significantly reducing cardiac output and
coronary perfusion pressure.
Q4: Which technique best ensures that chest compressions are effective and meet the depth
requirement?
A. Using only one hand to prevent pushing too deep.
B. Keeping elbows bent to absorb the shock.
C. Keeping the arms straight and shoulders directly over the hands, allowing the upper body weight to
drive compressions. [CORRECT]
D. Compressing rapidly with a bouncing motion to build momentum.
Correct Answer: C
, Rationale: Proper mechanics involve straight arms and shoulders aligned over the hands. This allows the
rescuer to use their upper body weight (gravity) to achieve the necessary depth without rapid fatigue.
Bent elbows (Option B) reduce force transmission, and a bouncing motion (Option D) is ineffective and
unsafe.
Q5: A rate-controlling device (metronome or feedback monitor) indicates you are compressing at 130
beats per minute. What corrective action is necessary?
A. Continue at this rate; faster compressions increase survival.
B. Slow down to a rate of 100 to 120 compressions per minute. [CORRECT]
C. Speed up to ensure the heart pumps enough blood.
D. Stop compressions to check for a pulse.
Correct Answer: B
Rationale: The target rate is 100–120 compressions per minute. Rates exceeding 120 bpm (like 130 bpm)
reduce the time for chest recoil and filling, often resulting in shallower compressions and lower blood
flow. The rescuer must adjust their rhythm to fall within the optimal range.
Q6: Why is it critical to minimize interruptions in chest compressions (limiting them to less than 10
seconds)?
A. To prevent the rescuer from getting tired.
B. To maintain coronary perfusion pressure and blood flow to vital organs. [CORRECT]
C. To ensure the AED charges faster.
D. To allow the patient to regain consciousness more quickly.
Correct Answer: B
Rationale: Every time compressions stop, the blood pressure drops to zero. It takes time to rebuild
pressure when compressions restart. Minimizing interruptions maintains blood flow to the brain and
heart, increasing the likelihood of return of spontaneous circulation (ROSC).
