Why the study?
Does impedance cardiography accurately measure cardiac output compared to an isotopic indicator-dilution method in elderly patients?
Does impedance cardiography accurately measure cardiac output compared to an isotopic indicator-dilution method in elderly patients?
Impedance cardiography provides comparable cardiac output measurements to the isotopic indicator-dilution method in elderly patients.
Answers are grounded in this paper and cite their sources.
Impedance cardiography may support noninvasive cardiac output assessment in elderly patients; leaves open need for prospective validation before clinical adoption.
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.
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Williams et al. (1980) studied this question.
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