ACLS BLS and High-Quality CPR 5

Question 1

Which of the following BEST describes the purpose of the 'C-A-B' sequence in CPR?

Accepted Answer

Prioritizing chest compressions over airway and breathing to restore circulation faster

Answer

The C-A-B sequence ensures compressions start immediately to restore circulation rather than delaying for airway management.

Question 2

An ETCO2 monitor is attached to a patient receiving CPR. The reading is 42 mmHg. What does this most likely indicate?

Accepted Answer

Return of spontaneous circulation

Answer

An abrupt rise in ETCO2 to normal physiologic levels (35–45 mmHg) during CPR is a reliable indicator of ROSC.

Question 3

What is the recommended depth of chest compressions for an infant during CPR?

Accepted Answer

At least 1.5 inches or approximately 1/3 the depth of the chest

Answer

For infants, compressions should be at least 1.5 inches or approximately one-third the anterior-posterior chest diameter.

Question 4

During a cardiac arrest resuscitation, when should the team consider stopping CPR efforts?

Accepted Answer

Based on clinical judgment, ETCO2 trends, and reversible causes being addressed

Answer

The decision to stop CPR is based on clinical factors including ETCO2 trends, reversible causes (H's and T's), rhythm, and team assessment — not a fixed time.

Question 5

A single rescuer is performing CPR on an adult with no advanced airway. After how many compressions should rescue breaths be given?

Accepted Answer

30 compressions

Answer

Single-rescuer adult CPR follows the 30:2 ratio, with 30 compressions followed by 2 rescue breaths.

ACLS Practice Test

ACLS Practice Test

ACLS BLS and High-Quality CPR 5