BLS Practice Test: Video 4 Answers (24 Questions)

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

After ROSC, a patient's blood pressure is 80/50 mmHg. Which component of post-cardiac arrest care addresses this?

Accepted Answer

Hemodynamic optimization with fluids and vasopressors

Answer

Hemodynamic optimization targets a mean arterial pressure ≥65 mmHg to ensure adequate organ perfusion after ROSC.

Question 3

What is the first link in the adult Chain of Survival?

Accepted Answer

Recognition and activation of emergency response

Answer

The first and most crucial step in the adult Chain of Survival is the immediate recognition of cardiac arrest and prompt activation of the emergency response system (e.g., calling 911/112). This ensures that professional help is on the way and sets the entire rescue process in motion. Without this initial recognition and call for help, subsequent links in the chain cannot be initiated effectively.

Question 4

Why is it called a 'chain' of survival?

Accepted Answer

Each step connects to the next

Answer

It's called a 'chain' of survival because each link is dependent on the preceding one and strengthens the subsequent ones. If one link is weak or missing, the entire chain breaks, significantly reducing the chances of survival. The seamless and timely execution of all steps together maximizes the victim's outcome, highlighting the interconnectedness of each action.

Question 5

When performing rescue breathing for a patient in respiratory arrest with a pulse, what is the correct rate for an adult?

Accepted Answer

1 breath every 5–6 seconds

Answer

AHA guidelines recommend 1 breath every 5–6 seconds (10–12 breaths/min) for adults with a pulse.

BLS - Basic Life Support Practice Test

BLS - Basic Life Support Practice Test

BLS Practice Test: Video 4 Answers (24 Questions)