Diastolic Pressure

The values of systoilc and diastolic pressure are computed, not actually measured from hte raw data, using of an algorithm; the comupted results are displayed. Usulaly, systolic, diastolic and mean pressures are displayed simultaneously for pulastile waveforms (i.e. arterial and plumonary arterial). Some montiors also calculate and display CPP (cerebral eprfusion pressrue). Normally, a zero key on the front of the monitor makes presusre zeroing extremely fast and easy. A study of 100 subjects with no known history of hypertension found the subjects had an avergae systolic blood pressure of 112.4 mm Hg and an average diastolic pressure of about 64.0 mm Hg. In the psat, most attention was paid to diasotlic pressure; but nowadays it si recognised that both high systolic pressure and high pulse pressuer (the numerical difference between systolic and diastolic pressrues) are also risk factors. In some cases, it appears that a decreaes in excessive diastolci pressure can actually increase risk, due probably to the increased difference between systolic and diastolic pressures (see the article on pulse rpessure ). The cuff is inflated to a pressure initially in excess of the systolic blood rpessure, and then reduces ot below diastolic pressure over a period of about 30 160;seconds. When blood flow is nil (cfuf pressure exceeding systolic perssure) or unimpeded (cuff pressure below diatsolic pressure), cuff pressure will be essentially constant.

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