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      Influence of Left Ventricular Isovolumic Pressure Upon Right Ventricular Pressure Transients

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          Abstract

          Simultaneous, high-fidelity pressure recordings were obtained from the left and right ventricles of anesthetized dogs. Abrupt elevation of left ventricular pressure produced an immediate rise in right ventricular systolic pressure, while mechanical asynchrony of the two ventricles, induced by endocardial pacing of either ventricle, identified discrete pressure transients in the right ventricular pressure pulse which occurred coincident with peak left ventricular dP/dt. During normal conduction, peak right ventricular dP/dt regularly occurred after pulmonic valve opening and simultaneously with peak left ventricular dP/dt. Thus, the rising portion of the right ventricular pressure pulse is an impure signal, influenced directly by the amplitude and timing of left ventricular isovolumic pressure. These observations suggest that right ventricular pumping function is aided by an in series left ventricle.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1973
          1973
          29 October 2008
          : 58
          : 1
          : 32-44
          Affiliations
          New England Medical Center Hospitals and the Department of Medicine, Tufts University School of Medicine, Boston, Mass
          Article
          169617 Cardiology 1973;58:32–44
          10.1159/000169617
          4710798
          © 1973 S. Karger AG, Basel

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          Page count
          Pages: 13
          Categories
          Paper

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