A comparison between cardiac output determined by impedance cardiography and the rebreathing method during exercise in man.
Cardiac output was determined by impedance cardiography (Q(imp)) and a rebreathing method (Q(reb)) during exercise of loads up to 90 W. The correlation between Q(imp) and Q(reb) was generally good, but it was found in two of four subjects that Q(imp) was slightly lower than Q(reb) at the higher exercise levels. The regression equation for both Q values was: Q(imp) = 0.91 Q(reb) + 0.25 (l/min, r = 0.87, p less than 0.001).
Niizeki
K
K
Department of Physiology, Yamagata University School of Medicine, Japan.
Miyamoto
Y
Y
Doi
K
K
D000328:Adult; D002302:Cardiac Output; D002307:Cardiography, Impedance; D004553:Electric Conductivity; D004562:Electrocardiography; D005080:Exercise Test; D006334:Heart Function Tests; D006801:Humans; D005082:Physical Exertion