ACLS Basics 3

Question 1

In ACLS, what is the correct action immediately after delivering a defibrillation shock?

Accepted Answer

Resume CPR immediately starting with chest compressions

Answer

CPR should resume immediately after a shock without pausing to check pulse or rhythm, then a rhythm check occurs after 2 minutes.

Question 2

Which IV/IO access site is preferred for medication administration during cardiac arrest?

Accepted Answer

Antecubital or external jugular vein

Answer

Peripheral IV access at the antecubital or external jugular site is preferred due to speed and safety during arrest situations.

Question 3

What is the recommended energy level for the first biphasic defibrillation shock in adults?

Accepted Answer

120–200 J

Answer

The initial biphasic shock dose is 120–200 J based on the manufacturer's recommendation, or 200 J if unknown.

Question 4

Which of the following is an indication for intraosseous (IO) access during cardiac arrest?

Accepted Answer

Failed or delayed IV access

Answer

IO access is indicated when peripheral IV access is not rapidly achievable during cardiac arrest.

Question 5

What is the purpose of end-tidal CO2 (ETCO2) monitoring during cardiac arrest?

Accepted Answer

To confirm correct endotracheal tube placement and assess CPR quality

Answer

ETCO2 confirms ETT placement and reflects cardiac output during CPR — values above 10 mmHg suggest effective compressions.

ACLS Practice Test