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HeartCode BLS Online: Cardiac Arrest
Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the first action you should take when you witness an adult suddenly collapse?✔✔ Immediately activate the emergency response system (call 911/get an AED) and begin CPR.
How deep should chest compressions be when performing high-quality CPR on an adult?✔✔ Compress at least 2 inches (5 cm) but no more than 2.4 inches (6 cm).
What is the correct hand placement for chest compressions during adult CPR?✔✔ Place the heel of one hand in the center of the chest (lower half of the sternum) with the other hand on top.
How do you check for responsiveness in an unresponsive victim?✔✔ Tap the victim’s shoulder and shout, "Are you okay?" while looking for movement or breathing.
What is the recommended compression rate for high-quality CPR? 1 / 2
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✔✔ 100 to 120 compressions per minute.
What should you do if a victim is gasping but unresponsive?✔✔ Treat as cardiac arrest and begin CPR immediately—agonal gasps are not normal breathing.
How long should you check for a pulse in an unresponsive victim?✔✔ No more than 10 seconds.
What is the correct compression-to-ventilation ratio for single-rescuer adult CPR?✔✔ 30 compressions to 2 ventilations.
When should you switch rescuers during CPR?✔✔ Every 2 minutes or sooner if the compressor is fatigued.
What is the most critical component of high-quality CPR?✔✔ Minimizing interruptions in chest compressions.
What should you do if an AED arrives during CPR?
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