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Basic Life Support Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What is the role of an AED in a cardiac arrest situation?✔✔ To analyze the heart rhythm and deliver a shock if necessary to restore a normal rhythm.
How do you know if chest compressions are deep enough?✔✔ The chest should compress at least 2 inches (5 cm) for adults and 1.5 inches (4 cm) for children.
What should you do if you encounter a victim who is unresponsive and has no pulse?✔✔ Start CPR immediately, beginning with chest compressions.
What is the proper technique for performing a head-tilt, chin-lift in an unresponsive person?✔✔ Place one hand on the forehead and apply gentle pressure to tilt the head back. Place the fingers of your other hand under the chin and lift the chin upward.
What is the correct compression-to-breath ratio for CPR on an infant? 1 / 4
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✔✔ 30 compressions to 2 breaths when one rescuer is present.
What should you do if you cannot get a good seal while giving rescue breaths to a victim?✔✔ Reposition the victim's head and try again to form a better seal.
How should you perform CPR on a victim who is pregnant?✔✔ Perform chest compressions as usual, but if needed, manually displace the uterus to the left to avoid compressing the vena cava.
What should you do if a person is responsive and able to cough but is choking?✔✔ Encourage them to keep coughing to try to clear the obstruction.
When giving chest compressions, what is the importance of allowing the chest to fully recoil between compressions?✔✔ Full recoil ensures the heart has time to refill with blood and maximizes blood flow to vital organs.
What is the proper way to perform CPR on an adult who is pregnant? 2 / 4
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✔✔ Perform CPR as usual, but if necessary, perform manual displacement of the uterus during chest compressions.
What is the first step when you approach an unresponsive person?✔✔ Check the scene for safety, then check for responsiveness.
When performing CPR on an adult, what is the proper compression depth?✔✔ At least 2 inches (5 cm).
How should you position the hands for chest compressions on an adult?✔✔ Place the heel of one hand on the center of the chest, with the other hand on top, interlocking the fingers.
How fast should chest compressions be during CPR?✔✔ At a rate of 100 to 120 compressions per minute.
What is the compression-to-breath ratio for adult CPR when performed by one rescuer?✔✔ 30 compressions to 2 breaths. 3 / 4
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What should you do if an adult victim is not breathing but has a pulse?✔✔ Provide rescue breaths at a rate of 1 breath every 5 to 6 seconds.
How should you check for breathing in an unresponsive person?✔✔ Look for chest rise, listen for breath sounds, and feel for air on your cheek.
When should you use an AED on an unresponsive adult?✔✔ As soon as it is available, even before starting CPR if no pulse is detected.
What is the correct procedure for performing CPR on a child?✔✔ Use one or two hands for chest compressions, depending on the child's size, and give 30 compressions followed by 2 breaths.
What is the proper technique for giving rescue breaths to an infant?✔✔ Cover both the infant's mouth and nose with your mouth, giving gentle breaths until the chest rises.
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