During a basic life support skills check-off, a nursing student is asked to explain the rationale behind checking for a pulse before starting chest compressions on an unresponsive adult who is not breathing normally. The instructor points out that the student paused for what felt like several seconds before beginning compressions. What is the primary reason a rescuer should limit the pulse check to no more than 10 seconds before starting compressions?
- A longer pulse check causes the rescuer to hyperventilate before giving rescue breaths
- A longer pulse check makes it harder to determine whether an AED is needed
- A longer pulse check increases the risk of rib fracture once compressions begin
- A longer pulse check delays the start of chest compressions and reduces coronary perfusion pressure