BLS Adult, Child & Infant Resuscitation 3

Question 1

During high-quality CPR on an adult, what is the recommended rate of chest compressions?

Accepted Answer

100–120 compressions per minute

Answer

AHA BLS guidelines specify a compression rate of 100–120 compressions per minute for adults, children, and infants.

Question 2

A rescuer performing CPR on an adult allows the chest to fully recoil after each compression. Why is this important?

Accepted Answer

It allows the heart to refill with blood between compressions

Answer

Full chest recoil allows the heart to passively fill with blood, which is then pumped during the next compression.

Question 3

For a child victim in cardiac arrest, what is the two-rescuer compression-to-ventilation ratio?

Accepted Answer

15:2

Answer

Two rescuers performing CPR on a child use a 15:2 ratio to deliver more frequent ventilations to the pediatric patient.

Question 4

An AED arrives while CPR is in progress on an adult. What is the correct next step?

Accepted Answer

Stop CPR, power on the AED, and follow its prompts immediately

Answer

The AED should be used as soon as it is available; power it on and follow the voice prompts without unnecessary delay.

Question 5

How far should the sternum be compressed during adult CPR?

Accepted Answer

At least 2 inches

Answer

Adult compressions must be at least 2 inches (5 cm) deep but should not exceed 2.4 inches (6 cm) to be effective without causing excess injury.

BLS - Basic Life Support Practice Test