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      Wave Velocity-Dependent Pressure Method for Estimating the Ventricular Stroke Volume

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          Abstract

          A theoretical approach for estimating directional changes in the average wave velocity of the systematic vascular bed was found and applied to develop a reliable pressure contour method for determining the ventricular stroke volume following the administration of sympathomimetic agents. Two pressure methods in which the wave velocity was assumed either constant or variable were compared to the electromagnetic flowmeter technique for measuring stroke volume. The overall performance of both pressure methods was essentially the same over a wide range of physiologic conditions in five dogs. Statistical comparison of the pressure methods during interventions with epinephrine and metaraminol demonstrated a significant increase in accuracy when allowance for variations in the pulse wave velocity was made.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1974
          1974
          29 October 2008
          : 59
          : 5
          : 319-326
          Affiliations
          Department of Medicine, University of Mississippi Medical Center, Jackson, Miss.
          Article
          169681 Cardiology 1974;59:319–326
          10.1159/000169681
          4282349
          © 1974 S. Karger AG, Basel

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          Pages: 8
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