What does performing CPR do to the rate of decline in survival per minute when waiting for defibrillation?

What does performing CPR do to the rate of decline in survival per minute when waiting for defibrillation?

• A. It eliminates the decline
• B. It doubles the decline
• C. It halves the decline
• D. It reduces the decline to about 3-4% per minute

Answer: (D)

Providing CPR during a cardiac arrest keeps some blood flowing to the heart and brain, preserving perfusion while you wait for a defibrillation shock. That circulatory support slows how quickly survival chances fall each minute. Rather than eliminating the drop or changing it in drastic ways, it reduces the rate of decline to about 3-4% per minute. So CPR buys time and improves the odds when defibrillation comes, which is why the best statement is that the decline is reduced to roughly 3-4% per minute.

Providing CPR during a cardiac arrest keeps some blood flowing to the heart and brain, preserving perfusion while you wait for a defibrillation shock. That circulatory support slows how quickly survival chances fall each minute. Rather than eliminating the drop or changing it in drastic ways, it reduces the rate of decline to about 3-4% per minute. So CPR buys time and improves the odds when defibrillation comes, which is why the best statement is that the decline is reduced to roughly 3-4% per minute.