[Possibilities of measuring the dynamics of the stroke volume according to the data of ultrasonic Doppler-cardiography].
The possibility of determining the relative changes in the stroke volume of the left ventricle on the basis of ultrasonic Doppler-cardiography was studied in animal experiments and in tests with volunteers. The dynamic measurements of the cardiac output by means of ultrasonic Doppler-cardiography were performed on the basis of recording the amplitude of excursions of the posterior wall of the ventricle during the ejection phase by way of integrating the Doppler frequencies in the 150--800 cycles range. Simultaneously the dynamics of the cardiac output was studied electromagnetically (in animal experiments) and rheographically (in volunteers). The results of both the methods correlated closely: the reciprocal correlation coefficient in animal experiments comprised r=0.89 (p less than 0.001), in volunteers r=0.78 (p less than 0.001). The authors concluded that ultrasonic Doppler-cardiography can be used for measuring the relative changes in the stroke volume.
D000328:Adult; D000818:Animals; D002302:Cardiac Output; D004285:Dogs; D055590:Electromagnetic Phenomena; D006321:Heart / Q000502:physiology*; D006334:Heart Function Tests; D006801:Humans; D008297:Male; D010992:Plethysmography, Impedance; D014463:Ultrasonography
O vozmozhnosti izmereniia dinamiki udarnogo ob'ema krovi po dannym ul'trazvukovoĭ Doppler-kardiografii