Acta Med. 1998, 41: 27-28

https://doi.org/10.14712/18059694.2019.164

Mean Blood Pressure and Velocity for Calculation of Ventricular Systolic Work

Milan Valach

Department of Medical Biophysics, Charles University, Faculty of Medicine, Hradec Králové, Czech Republic

Received November 1, 1997
Accepted January 1, 1998

In physiology, the mean arterial pressure is defined as an average pressure during one or several cardiac cycles. When calculus is not used, the mean pressure is approximately calculated as the diastolic pressure plus one third of the pulse pressure. In this article it is demonstrated that, when ventricular systolic work is concerned, the above definition of mean pressure must be replaced by a weighted average during the ejection phase of the systole. This gives a formula, by which a much higher estimate of the mean pressure is obtained.

References

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