Impedance cardiography and cardiac output in the elderly.
The cardiac output has been measured in 40 elderly patients by impedance cardiography and an isotopic indicator-dilution method. There was no significant systemic difference between the results obtained by the two methods. The mean difference between paired values was 0.76 1/min (approximately 16%). The value and limitations of impedance cardiography in the study of the circulation in the elderly are discussed.
D000368:Aged; D002302:Cardiac Output; D002307:Cardiography, Impedance / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged