BLS CPR Techniques & Procedures 4 — Questions and Answers
Question 1: When performing two-rescuer infant CPR, which compression technique is preferred?
- Two-finger technique below the nipple line
- Heel-of-hand technique
- Two thumb-encircling hands technique (Correct answer)
- One-hand technique with the other hand supporting the back
Correct answer: Two thumb-encircling hands technique
The two thumb-encircling hands technique is preferred for two-rescuer infant CPR because it generates higher coronary perfusion pressure.
Question 2: A victim receives an AED shock but remains pulseless. What is the next immediate step?
- Analyze the rhythm again before resuming CPR
- Resume CPR immediately starting with chest compressions (Correct answer)
- Deliver a second shock right away
- Check for breathing for up to 30 seconds
Correct answer: Resume CPR immediately starting with chest compressions
After delivering a shock, CPR should be immediately resumed starting with chest compressions without pausing to check the rhythm.
Question 3: What does the term 'peri-arrest' mean in the context of resuscitation?
- The period immediately after ROSC
- The period immediately before or after cardiac arrest when the patient is critically unstable (Correct answer)
- The time during which CPR is actively being performed
- The delay between collapse and first compression
Correct answer: The period immediately before or after cardiac arrest when the patient is critically unstable
Peri-arrest refers to the critical period immediately before or after cardiac arrest when the patient is at high risk of deterioration or re-arrest.
Question 4: In a healthcare setting, what should be done if a patient has a 'Do Not Resuscitate' (DNR) order and goes into cardiac arrest?
- Begin CPR and contact the physician immediately
- Begin CPR until the order can be verified
- Withhold resuscitation efforts and provide comfort care (Correct answer)
- Apply an AED but do not perform compressions
Correct answer: Withhold resuscitation efforts and provide comfort care
A valid DNR order directs healthcare providers to withhold resuscitation efforts; comfort measures should be provided instead.
Question 5: What is the purpose of the 'C-A-B' sequence in adult CPR according to current AHA guidelines?
- It prioritizes airway management before compressions
- It prioritizes circulation (compressions) before airway and breathing to deliver oxygenated blood faster (Correct answer)
- It ensures the AED is applied before any other intervention
- It refers to checking Consciousness, Airway, and Breathing before calling 911
Correct answer: It prioritizes circulation (compressions) before airway and breathing to deliver oxygenated blood faster
The C-A-B sequence (Compressions, Airway, Breathing) prioritizes chest compressions to maintain perfusion before ventilations.
Question 6: During CPR, a rescuer should avoid which of the following actions?
- Allowing full chest recoil after each compression
- Leaning on the chest between compressions (Correct answer)
- Compressing at a rate of 100-120 per minute
- Switching compressors every 2 minutes
Correct answer: Leaning on the chest between compressions
Leaning on the chest between compressions prevents full recoil, which reduces venous return and decreases the effectiveness of CPR.
Question 7: For a child victim (ages 1 year to puberty) in cardiac arrest with two rescuers present, what is the compression-to-ventilation ratio?
- 30:2
- 15:2 (Correct answer)
- 15:1
- 5:1
Correct answer: 15:2
Two rescuers performing CPR on a child use a 15:2 ratio, which allows more frequent ventilations appropriate for pediatric victims.
BLS CPR Techniques & Procedures 4
When performing two-rescuer infant CPR, which compression technique is preferred?