BLS BLS High-Quality CPR & Provider Skills

Question 1

What is the recommended compression depth for adult CPR to meet the AHA definition of high-quality CPR?

Accepted Answer

At least 2 inches but no more than 2.4 inches

Answer

At least 1 inch but no more than 1.5 inches

Answer

At least 3 inches but no more than 3.5 inches

Answer

As deep as possible — there is no upper limit for adults

Question 2

How long should a rescuer spend checking for a carotid pulse before deciding to start CPR?

Accepted Answer

No more than 10 seconds

Answer

Up to 30 seconds to be certain

Answer

Exactly 15 seconds per protocol

Answer

Until the rescuer is 100% confident no pulse exists

Question 3

Where should the rescuer's hands be placed for adult chest compressions?

Accepted Answer

Lower half of the sternum, at the center of the chest

Answer

Upper half of the sternum

Answer

Left side of the chest directly over the heart

Answer

On the xiphoid process at the base of the sternum

Question 4

During 2-rescuer CPR, how frequently should rescuers switch compression duties?

Accepted Answer

Approximately every 2 minutes (after 5 cycles of 30:2)

Answer

Every 5 minutes to limit disruption to CPR rhythm

Answer

Only when the current compressor reports fatigue

Answer

Every 10 minutes as a standard rotation interval

Question 5

What does 'allowing full chest recoil' mean during CPR?

Accepted Answer

Releasing all downward pressure so the chest fully rises between compressions

Answer

Pausing compressions for 5 seconds between each one to allow rest

Answer

Reducing the compression rate by half to allow cardiac recovery time

Answer

Using only 2 fingers so the chest can recoil freely

Question 6

What is the maximum acceptable pause in chest compressions at any point during CPR?

Accepted Answer

10 seconds

Answer

5 seconds

Answer

20 seconds

Answer

30 seconds