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Validation of non-invasive measurement of cardiac output. The Ann Arbor experience

S Julius1

  • 1Department of Internal Medicine, University of Michigan Medical School, Ann Arbor 48109-0356.

European Heart Journal
|December 1, 1990
PubMed

Insights

Non-invasive cardiac output measurement using M-mode echocardiography and CO2 rebreathing is unreliable. The echo-Doppler method shows promise for population studies.

Area of Science:

  • Cardiology
  • Physiology
  • Medical Technology

Background:

  • Accurate clinical measurement of cardiac output is essential for patient assessment.
  • Non-invasive methods are preferred to avoid risks associated with invasive procedures.

Purpose of the Study:

  • To evaluate the reliability of non-invasive methods for measuring cardiac output.
  • To identify suitable methods for population studies.

Main Methods:

  • Assessment of M-mode echocardiography for cardiac output measurement.
  • Evaluation of the CO2 rebreathing technique for cardiac output determination.
  • Analysis of the echo-Doppler method for cardiac output assessment.

Main Results:

  • M-mode echocardiography was found to be unreliable for clinical cardiac output measurement.
  • The CO2 rebreathing technique demonstrated unreliability in cardiac output assessment.
  • The echo-Doppler method showed potential utility, particularly for population studies.

Conclusions:

  • Current non-invasive methods like M-mode echocardiography and CO2 rebreathing are not reliable for clinical cardiac output measurement.
  • The echo-Doppler technique presents a viable option for estimating cardiac output in population-based research.

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