RU93010717A - METHOD FOR DETERMINING THE MAIN FUNCTIONAL INDICATORS OF THE LEFT VENTRICLE HEART - Google Patents

Claims (1)

The method consists in the fact that the cardiogram is recorded in the IV or V chest leads, and if it is impossible to register them - in the II standard lead (or lead A across the Sky). In the absence of blockades of the Guiss block and ventricular rhythm on the ECG, they are measured in one cardiac cycle: first, the duration of the interval t _{Q R S} from the beginning of the Q wave (along the upper edge of the P - Q segment) to the end of the S wave (point J); secondly, the duration of the interval t _{S T - T} from the end of the S wave to the end of the T wave at the zero level (along the contour line); thirdly, the duration of the interval t _{R S} from the top of the R-wave to the end of the S-wave; and fourth, the duration of the interval t _{R - R} between the vertices of the R waves in adjacent cardiocycles. Based on the data obtained, the final diastolic and systolic volumes, minute and impact volumes, ejection fraction, and the average wall thickness of the left ventricle in diastole and systole are calculated.