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.
Age range
18 Years
Sex
ALL
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Determination of the comparative characteristics of the pulse wave parameters registered by a single- lead ECG monitor CardioQvark and indicators of systolic function of the left ventricle detected during echocardiography.
Timeframe: Through study completion, an average of 1 year.
Diagnostic accuracy of the pulse wave and electrocardiogram parameters registered by a single- lead ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.
Determination of the sensitivity of left ventricular systolic dysfunction detected by analysis of the pulse wave and electrocardiogram registered by a single- lead ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.
Determination of specificity of left ventricular systolic dysfunction detected by analysis of the pulse wave and electrocardiogram registered by a single- lead ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.
Determination of prognostic value of positive and negative results of left ventricular systolic dysfunction detected by analysis of the pulse wave and electrocardiogram registered by a single-channel ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.
Determination of area under receiver operating characteristic curve of left ventricular systolic dysfunction detected by analysis of the pulse wave and electrocardiogram registered by a single- lead ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.
Determination of correlation coefficient of left ventricular systolic dysfunction detected by analysis of the pulse wave and electrocardiogram registered by a single-channel ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.
assessment of the accuracy of the blood pressure measurement using a single-channel ECG monitor CardioQvark.
Timeframe: Through study completion, an average of 1 year.