CPR Techniques for Adults & Children 2 — Questions and Answers
Question 1: What is the correct compression depth for an adult during CPR?
- At least 2 inches (5 cm) (Correct answer)
- About 1 inch (2.5 cm)
- At least 3 inches (7.5 cm)
- Exactly 4 inches (10 cm)
Correct answer: At least 2 inches (5 cm)
Adult compressions should be at least 2 inches but no more than 2.4 inches deep.
Question 2: What compression-to-ventilation ratio is used for a single rescuer performing CPR on an adult?
- 30:2 (Correct answer)
- 15:2
- 5:1
- 10:2
Correct answer: 30:2
A single rescuer uses 30 compressions to 2 breaths for adults.
Question 3: What is the recommended compression rate for both adults and children?
- 100 to 120 per minute (Correct answer)
- 60 to 80 per minute
- 140 to 160 per minute
- 40 to 60 per minute
Correct answer: 100 to 120 per minute
Compressions should be delivered at 100 to 120 per minute.
Question 4: When two rescuers perform CPR on a child, what compression-to-ventilation ratio is used?
- 15:2 (Correct answer)
- 30:2
- 5:1
- 10:1
Correct answer: 15:2
For children with two rescuers, the ratio changes to 15 compressions to 2 breaths.
Question 5: Where should hands be placed for chest compressions on an adult?
- Center of the chest on the lower half of the breastbone (Correct answer)
- Over the upper left ribs
- On the upper third of the sternum
- Just below the navel
Correct answer: Center of the chest on the lower half of the breastbone
Hands go on the lower half of the sternum at the center of the chest.
Question 6: Why is full chest recoil important between compressions?
- It lets the heart refill with blood (Correct answer)
- It conserves the rescuer's energy
- It prevents rib fractures entirely
- It increases body temperature
Correct answer: It lets the heart refill with blood
Allowing complete recoil lets the heart refill so the next compression circulates more blood.
Question 7: How long should an interruption in chest compressions ideally last?
- Less than 10 seconds (Correct answer)
- About 30 seconds
- Up to 1 minute
- As long as needed to think
Correct answer: Less than 10 seconds
Interruptions should be minimized to under 10 seconds to maintain blood flow.
CPR Techniques for Adults & Children 2
What is the correct compression depth for an adult during CPR?