| Описание: | This is a prospective, single-center, non-randomized, observational study. The aim of this study is to determine the potential of a single-lead electrocardiogram monitor CardioQvark with photoplethysmography function use to evaluate systolic function of the left ventricle. The study is conducted in the clinic of I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia. It is planned to include 400 patients. Recording of the electrocardiogram and photoplethysmogram by the monitor CardioQvark and the assessment of systolic function using echocardiography will be performed in all study participants. The result of this study will be the identification of the parameters of the pulse wave and electrocardiogram that will correlate with systolic function of the left ventricle. It is also planned to determine the diagnostic effectiveness of this method. |