Basic Life Support (BLS) Provider Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2027 Q&A |
Instant Download Pdf
Question 1
What is the correct 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
Correct answer: C. 100–120 compressions per minute
Rationale: High-quality CPR requires a compression rate of 100–
120/min to maintain adequate coronary and cerebral perfusion
without compromising recoil or depth.
Question 2
What is the correct compression depth for an adult during CPR?
,A. About 1 inch (2 cm)
B. About 1.5 inches (4 cm)
C. At least 2 inches (5 cm) but not more than 2.4 inches (6 cm)
D. More than 3 inches (7.5 cm)
Correct answer: C. At least 2 inches (5 cm) but not more than 2.4
inches (6 cm)
Rationale: Adequate depth ensures effective blood flow while
avoiding injury from excessive compression.
Question 3
What is the recommended compression-to-ventilation ratio for adult
CPR without an advanced airway?
A. 15:2
B. 30:2
C. 30:1
D. 15:1
Correct answer: B. 30:2
Rationale: The 30:2 ratio optimizes circulation while providing
periodic ventilation in adult CPR.
,Question 4
What is the first step when you find an unresponsive adult?
A. Start chest compressions
B. Check pulse immediately
C. Activate emergency response system and get AED
D. Give two rescue breaths
Correct answer: C. Activate emergency response system and get AED
Rationale: Early activation of EMS and AED retrieval is critical in the
adult chain of survival.
Question 5
How should you open the airway of an adult victim without suspected
spinal injury?
A. Jaw-thrust maneuver
B. Head tilt–chin lift
C. Neck flexion
D. Chest thrust
Correct answer: B. Head tilt–chin lift
Rationale: The head tilt–chin lift is the standard method for opening
the airway when no trauma is suspected.
, Question 6
What is the depth of chest compressions for an infant?
A. About 1 inch (2.5 cm)
B. About 1.5 inches (4 cm)
C. About 2 inches (5 cm)
D. About 3 inches (7.5 cm)
Correct answer: B. About 1.5 inches (4 cm)
Rationale: Infant compressions should be about one-third chest depth,
approximately 1.5 inches.
Question 7
When using an AED on a child, which pad placement is recommended if
pediatric pads are unavailable?
A. Both pads on the chest
B. Anterior-posterior placement
C. One pad on chest and one on abdomen
D. Do not use AED
Correct answer: B. Anterior-posterior placement
Rationale: If pads risk touching, anterior-posterior placement reduces
pad overlap in children.
Questions And Correct Answers (Verified
Answers) Plus Rationales 2027 Q&A |
Instant Download Pdf
Question 1
What is the correct 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
Correct answer: C. 100–120 compressions per minute
Rationale: High-quality CPR requires a compression rate of 100–
120/min to maintain adequate coronary and cerebral perfusion
without compromising recoil or depth.
Question 2
What is the correct compression depth for an adult during CPR?
,A. About 1 inch (2 cm)
B. About 1.5 inches (4 cm)
C. At least 2 inches (5 cm) but not more than 2.4 inches (6 cm)
D. More than 3 inches (7.5 cm)
Correct answer: C. At least 2 inches (5 cm) but not more than 2.4
inches (6 cm)
Rationale: Adequate depth ensures effective blood flow while
avoiding injury from excessive compression.
Question 3
What is the recommended compression-to-ventilation ratio for adult
CPR without an advanced airway?
A. 15:2
B. 30:2
C. 30:1
D. 15:1
Correct answer: B. 30:2
Rationale: The 30:2 ratio optimizes circulation while providing
periodic ventilation in adult CPR.
,Question 4
What is the first step when you find an unresponsive adult?
A. Start chest compressions
B. Check pulse immediately
C. Activate emergency response system and get AED
D. Give two rescue breaths
Correct answer: C. Activate emergency response system and get AED
Rationale: Early activation of EMS and AED retrieval is critical in the
adult chain of survival.
Question 5
How should you open the airway of an adult victim without suspected
spinal injury?
A. Jaw-thrust maneuver
B. Head tilt–chin lift
C. Neck flexion
D. Chest thrust
Correct answer: B. Head tilt–chin lift
Rationale: The head tilt–chin lift is the standard method for opening
the airway when no trauma is suspected.
, Question 6
What is the depth of chest compressions for an infant?
A. About 1 inch (2.5 cm)
B. About 1.5 inches (4 cm)
C. About 2 inches (5 cm)
D. About 3 inches (7.5 cm)
Correct answer: B. About 1.5 inches (4 cm)
Rationale: Infant compressions should be about one-third chest depth,
approximately 1.5 inches.
Question 7
When using an AED on a child, which pad placement is recommended if
pediatric pads are unavailable?
A. Both pads on the chest
B. Anterior-posterior placement
C. One pad on chest and one on abdomen
D. Do not use AED
Correct answer: B. Anterior-posterior placement
Rationale: If pads risk touching, anterior-posterior placement reduces
pad overlap in children.
