During CPR, a CPP of what value or greater must be achieved?

During CPR, a CPP of what value or greater must be achieved?

• A. 5 mmHg
• B. 25 mmHg
• C. 40 mmHg
• D. 15 mmHg

Answer: (D)

During CPR, coronary perfusion pressure (CPP) measures the blood flow available to feed the heart muscle itself. It’s the difference between the pressure in the aorta during diastole (the part of the heartbeat when the heart is not actively contracting) and the pressure in the right atrium. This gradient drives blood into the heart muscle when external chest compressions are supplying the circulation. The goal is to achieve at least 15 mmHg of CPP. Keeping CPP at or above this level improves the likelihood of return of spontaneous circulation because the heart muscle receives enough blood flow to recover and resume normal rhythm. High-quality, uninterrupted chest compressions raise the diastolic aortic pressure, and vasopressors can help elevate this pressure further to meet or exceed the threshold. Poor technique, excessive ventilation, or interruptions can drop CPP, reducing the chance of ROSC. In practice, aiming for a CPP of 15 mmHg or more during CPR is the key target for optimizing myocardial perfusion.

During CPR, coronary perfusion pressure (CPP) measures the blood flow available to feed the heart muscle itself. It’s the difference between the pressure in the aorta during diastole (the part of the heartbeat when the heart is not actively contracting) and the pressure in the right atrium. This gradient drives blood into the heart muscle when external chest compressions are supplying the circulation. The goal is to achieve at least 15 mmHg of CPP. Keeping CPP at or above this level improves the likelihood of return of spontaneous circulation because the heart muscle receives enough blood flow to recover and resume normal rhythm. High-quality, uninterrupted chest compressions raise the diastolic aortic pressure, and vasopressors can help elevate this pressure further to meet or exceed the threshold. Poor technique, excessive ventilation, or interruptions can drop CPP, reducing the chance of ROSC. In practice, aiming for a CPP of 15 mmHg or more during CPR is the key target for optimizing myocardial perfusion.