ARTERIAL PRESSURE-BASED, AUTOMATIC DETERMINATION OF A CARDIOVASCULAR PARAMETER

摘要

One or more Cardiovas cular parameters is estimated as a f'unction of the arterial pressure waveform (P(1), in particular, using at loost one statistical moment (|i?(., |i||.,:and Hn)01' a discrete representation (P(k) pressure waveform having an order greater than one. Arterial pressure may be measared invasivcly or non-invasively. Arterial compliance (K), an exponential pressure decay conslanl (tan),vascular resistance (K), cardiac output (CO), and stroke volume (SV) are examples of cardiovascular parmanent that can be estimated using various aspects of (he invention. In a single-moment embodiment of the, invention, cardiac: strroke volume (SV) of a subject is estimated as a function of a value derived from the pressure waveform. In a multi-moment embodiment of the invention, two or more of the first four moments mean, standard deviation, skewness, and kwlosis -of the pressure waveform are used to estimate the cardiovascular parameters(s) of interest, as well us heart rale, statistical moments (|J|T. K'T. Mir. (I'tr) )of a set pressure-weighted time values ('!'( i)), and certain anlhropometrie palienl mesurments such as age, sex, body surface area, ele.