METHOD AND APPARATUS FOR ASSESSING PERIPHERAL ARTERIAL TONE

摘要

A computer-implemented method for assessing peripheral arterial tone (100), PAT, of an individual (1) monitored by optical plethysmography, wherein said method comprises the steps of:- obtaining:o an optical plethysmography signal (101) measured at an investigated volume (11) of said individual (1); ando light intensities (102; 103) acquired by optical plethysmography at two or more points in time (12; 13) along said optical plethysmography signal (101); and- determining changes in arterial blood volume (16) in said investigated volume (11) between said two or more points in time (12; 13) by determining a logarithm (17) or a function approximation thereof (17) of a function of said light intensities (102; 103), thereby assessing PAT (100) of said individual (1).