Stroke volume measured by pulsed ultrasound Doppler and M-mode echocardiography.
The velocity of the bloodstream in the ascending aorta was measured by pulsed ultrasound Doppler. The diameter of the aorta was measured by M-mode echocardiography. Forty-three measurements were performed in six patients, who all had a Swan-Ganz catheter. The calculated stroke volumes from the Doppler-Echo method were compared with the stroke volumes measured by the thermodilution technique, which was performed simultaneously with the Doppler measurements. The correlation between the measurements was good (r = 0.08). It is concluded that it is possible non-invasively to measure stroke volume (and cardiac output) by means of ultrasound Doppler and an echocardiograph.
D000368:Aged; D001011:Aorta; D001783:Blood Flow Velocity; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D013815:Thermodilution; D014463:Ultrasonography