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Evaluation of the pulse-contour method of determining stroke volume in man.The pulse-contour method for determining stroke volume has been employed as a continuous rapid method of monitoring the cardiovascular status of patients. Twenty-one patients with ischemic heart disease and 21 patients with mitral valve disease were subjected to a variety of hemodynamic interventions. The pulse-contour estimations, using three different formulas derived by Warner, Kouchoukos, and Herd, were compared with indicator-dilution outputs. A comparison of the results of the two methods for determining stroke volume yielded correlation coefficients ranging from 0.59 to 0.84. The better performing Warner formula yielded a coefficient of variation of about 20%. The type of hemodynamic interventions employed did not significantly affect the results using the pulse-contour method. Although the correlation of the pulse-contour and indicator-dilution stroke volumes is high, the coefficient of variation is such that small changes in stroke volume cannot be accurately assessed by the pulse-contour method. However, the simplicity and rapidity of this method compared to determination of cardiac output by Fick or indicator-dilution methods makes it a potentially useful adjunct for monitoring critically ill patients.
Document ID
19720060268
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Alderman, E. L.
Branzi, A.
Sanders, W.
Brown, B. W.
Harrison, D. C.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
September 1, 1972
Publication Information
Publication: Circulation
Volume: 46
Subject Category
Biosciences
Accession Number
72A43934
Funding Number(s)
CONTRACT_GRANT: NGL-05-020-305
CONTRACT_GRANT: NIH-HE-5709
CONTRACT_GRANT: NIH-HE-5866
Distribution Limits
Public
Copyright
Other

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