Theoretical Basis for Proposed Standard Algorithm of Blood Pressure Measurement by the Sphygmooscillographic Method

Abstract

The sphygmooscillographic method is an electronic, noninvasive method of measuring blood pressure (BP), based on the amplitude height of the pulse waves registered by a pressure transducer. This method operates following a standard algorithm. The maximum amplitude of the registered pulse waves is taken as mean pressure MP 1100 perent With systolic pressure (SP), the amplitude of pulse waves decreases to 40 percent and with diastolic pressure (DP) the amplitude of pulse waves reaches 60 percent of the previous maximum amplitude of the A IP level. The ratios result from the formula MP=DP+0.40(SP-DP). The 0.40 coefficient in the equation is Variable it should be calculated individually for each measurement by integrating the maximal pulse wave registered at MP in the cuff. The sphygmooscillographic method, which operates on the basis of the standard algorithm described above, measured the BP of infants, children and adults in coincidence with the direct niethod. It could be put to trial as an alternative standard approach to direct and auscultatory methods of measuring and evaluating BP.