First Aid CPR and AED Procedures 2 — Questions and Answers
Question 1: When performing CPR on an adult, what is the correct compression-to-ventilation ratio?
- 15:2
- 30:2 (Correct answer)
- 10:1
- 5:1
Correct answer: 30:2
The correct adult CPR ratio is 30 chest compressions to 2 rescue breaths.
Question 2: An AED advises 'No shock recommended' after analyzing the rhythm. What should you do next?
- Wait 2 minutes before trying again
- Resume CPR immediately (Correct answer)
- Check for a pulse and stop if present
- Reposition the AED pads and re-analyze
Correct answer: Resume CPR immediately
If the AED finds no shockable rhythm, resume CPR immediately starting with chest compressions.
Question 3: During two-rescuer CPR, when should rescuers switch roles?
- Every 5 minutes
- Every 2 minutes or 5 cycles (Correct answer)
- Only when one rescuer is exhausted
- Every 10 cycles
Correct answer: Every 2 minutes or 5 cycles
Rescuers should switch every 2 minutes (5 cycles) to prevent fatigue and maintain effective compression quality.
Question 4: A 7-year-old child collapses. Which AED pads should be used if only adult pads are available?
- Do not use the AED on children under 8
- Use adult pads placed front and back (Correct answer)
- Use adult pads placed side by side on the chest
- Reduce shock energy by half manually
Correct answer: Use adult pads placed front and back
If pediatric pads are unavailable, adult pads may be used on children with one pad on the chest and one on the back.
Question 5: What is the correct hand position for chest compressions on an adult?
- On the upper half of the sternum
- On the lower half of the sternum (Correct answer)
- Over the xiphoid process
- Two inches to the left of the sternum
Correct answer: On the lower half of the sternum
Compressions should be delivered on the lower half of the sternum to effectively compress the heart.
Question 6: You are alone and need to call for help before starting CPR on an unresponsive adult. What is the correct action?
- Begin CPR for 2 minutes, then call 911
- Call 911 first, then begin CPR (Correct answer)
- Begin CPR and yell for someone to call 911 simultaneously
- Send a bystander for an AED before calling 911
Correct answer: Call 911 first, then begin CPR
For an unresponsive adult, call 911 (or have someone else call) before starting CPR to activate emergency services.
Question 7: How long should you check for a pulse before concluding there is none and starting CPR?
- 5 seconds
- No more than 10 seconds (Correct answer)
- 15–20 seconds
- 30 seconds
Correct answer: No more than 10 seconds
You should check for a carotid pulse for no more than 10 seconds before starting chest compressions.
First Aid CPR and AED Procedures 2
When performing CPR on an adult, what is the correct compression-to-ventilation ratio?