Formulas to Explain Popular Oscillometric Blood Pressure Estimation Algorithms.

ABSTRACT: Oscillometry is the blood pressure (BP) measurement principle of most automatic cuff devices. The oscillogram (which is approximately the blood volume oscillation amplitude-external pressure function) is measured, and BP is then estimated via an empirical algorithm. The objective was to establish formulas to explain three popular empirical algorithms in the literature-the maximum amplitude, derivative, and fixed ratio algorithms. A mathematical model of the oscillogram was developed and analyzed to derive parametric formulas for explaining each algorithm. Exemplary parameter values were obtained by fitting the model to measured oscillograms. The model and formulas were validated by showing that their predictions correspond to measurements. The formula for the maximum amplitude algorithm in

SUBMITTER: Chandrasekhar A 

PROVIDER: S-EPMC6881246 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature