Coronary perfusion pressure
- Coronary perfusion pressure
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Coronary perfusion pressure (CPP) refers to the pressure gradient that drives coronary blood pressure, meaning the difference between the aortic diastolic pressure and the right atrial pressure. It is a term used mainly in research concerning cardiac arrest. In this context, it is assumed that the minimum CPP needed for a successful outcome is 15mm Hg.
Coronary Perfusion Pressure (CPP)is a part of normal blood pressure, that is specifically responsible for coronary blood flow. CPP is also, generally, a surrogate term for coronary blood flow.
During cardiac arrest, CPP is one of the most important variables in achieving Return Of Spontaneous Circulation (ROSC equals getting a pulse again after pulseless arrest). We need a minimum amount of coronary perfusion pressure to achieve ROSC. This is thought to be 15 mmhg at a minimum.
References
- Disorders of circulatory flow. In The ICU Book. Lipincott Williams and Wilkins, 2007, p. 287
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