CPR Adult CPR and AED Usage 2 — Questions and Answers
Question 1: What is the recommended compression-to-ventilation ratio for one-rescuer adult CPR?
- 30:2 (Correct answer)
- 15:2
- 5:1
- 10:1
Correct answer: 30:2
Single-rescuer adult CPR uses 30 compressions followed by 2 breaths.
Question 2: How deep should chest compressions be on an average adult?
- At least 2 inches (5 cm) (Correct answer)
- About 1 inch (2.5 cm)
- At least 3 inches (7.5 cm)
- Half an inch (1.25 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 3: What is the correct compression rate for adult CPR?
- 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
The recommended rate is 100 to 120 compressions per minute.
Question 4: Where should your hands be placed for adult chest compressions?
- Center of the chest on the lower half of the breastbone (Correct answer)
- Over the left nipple
- On the upper sternum near the collarbones
- On the soft area below the ribs
Correct answer: Center of the chest on the lower half of the breastbone
Place the heel of your hand on the lower half of the sternum in the center of the chest.
Question 5: Why is allowing full chest recoil between compressions important?
- It lets the heart refill with blood (Correct answer)
- It conserves the rescuer's energy
- It prevents rib fractures
- It increases compression depth
Correct answer: It lets the heart refill with blood
Full recoil allows the heart to refill, improving blood flow with each compression.
Question 6: What should you do if you are untrained or unwilling to give rescue breaths?
- Provide hands-only (compression-only) CPR (Correct answer)
- Do nothing and wait for EMS
- Give breaths only
- Perform abdominal thrusts
Correct answer: Provide hands-only (compression-only) CPR
Hands-only CPR is recommended for untrained bystanders and is effective for sudden adult cardiac arrest.
Question 7: How long should you take to deliver each rescue breath?
- About 1 second, enough to see the chest rise (Correct answer)
- About 5 seconds
- As fast as possible
- About 3 seconds with maximum force
Correct answer: About 1 second, enough to see the chest rise
Each breath should last about 1 second and produce visible chest rise.
CPR Adult CPR and AED Usage 2
What is the recommended compression-to-ventilation ratio for one-rescuer adult CPR?