BLS Chain of Survival 2

Question 1

In the adult out-of-hospital Chain of Survival, which link comes immediately AFTER early CPR?

Accepted Answer

Rapid defibrillation

Answer

The adult out-of-hospital chain is: recognition/activation → early CPR → rapid defibrillation → advanced life support → post-cardiac arrest care.

Question 2

Why is the 'recognition and activation' link considered the first critical step in the Chain of Survival?

Accepted Answer

It starts the 911 dispatch process that brings AED and advanced care

Answer

Without recognition and activation, no subsequent links in the chain can begin, making it the trigger for all downstream interventions.

Question 3

Which Chain of Survival link is most often performed by bystanders before EMS arrives?

Accepted Answer

Early CPR

Answer

Bystanders are typically the first on scene and can begin CPR before EMS or AED resources arrive.

Question 4

A patient achieves return of spontaneous circulation (ROSC) after CPR and defibrillation. Which Chain of Survival link is now the priority?

Accepted Answer

Post-cardiac arrest care

Answer

Post-cardiac arrest care, including targeted temperature management and hemodynamic support, begins after ROSC is achieved.

Question 5

The in-hospital Chain of Survival differs from the out-of-hospital chain primarily because:

Accepted Answer

Surveillance and prevention replace recognition as the first link

Answer

In-hospital patients are monitored, so the chain begins with surveillance and prevention rather than bystander recognition.

BLS - Basic Life Support Practice Test