Which item is NOT part of the Timing explanation?

Which item is NOT part of the Timing explanation?

• A. Time to first compression.
• B. Time of first shock.
• C. Rate of chest compressions.
• D. Early EMS response time.

Answer: (C)

In CPR, Timing focuses on when actions occur after collapse: how quickly you start chest compressions, when the first shock is delivered if indicated, and how fast EMS arrives to provide advanced care. The rate at which you perform chest compressions, while crucial for effective perfusion, is about the quality of compressions (how fast you push) rather than when those actions occur, so it isn’t part of the Timing explanation. The recommended rate is about 100–120 compressions per minute to optimize perfusion, but this is a quality parameter, not a timing indicator.

In CPR, Timing focuses on when actions occur after collapse: how quickly you start chest compressions, when the first shock is delivered if indicated, and how fast EMS arrives to provide advanced care. The rate at which you perform chest compressions, while crucial for effective perfusion, is about the quality of compressions (how fast you push) rather than when those actions occur, so it isn’t part of the Timing explanation. The recommended rate is about 100–120 compressions per minute to optimize perfusion, but this is a quality parameter, not a timing indicator.