Pulsated Pressure

The pulsated pressure or differential pressure is a physiological element concerning the blood Pressure. It is the difference between the systolic peak of pressure and the pressure of end of Diastole.

$\backslash \; overline\; \{\backslash \; sigma\}\; =\; \backslash \; left\; (\{systolic\; pressure\; (Ps)\}\; -\; \{diastolic\; pressure\; (Pd)\}\; \backslash \; right)$

This value depends on the systolic volume of ejection (VES) and on vascular compliance (properties viscoelastic), i.e. of the capacity of a vessel (artery) to be stretched. The fundamental equation which connects these variables is $\backslash \; frac\; \{volume\}\; \{pressure\}$

The interpretation of the pulsated pressure is a means of recognizing arterial ageing, recognized factor of cardiovascular diseases.

The theoretical constants at a young subject are exponential. A lower value on the level of the Aorta (compliance of this larger Artery) and a significant amplification for the arteries in peripheries because of higher systolic pressure in the large arteries. This curve becomes a straight line with the old one. At the old subject, the pulsated pressure is a predictive factor of acute coronary syndrome, insufficance cardiaquen cerebral vascular accident, etc.

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