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      Left Ventricular Function during Asynchronous Ventricular Pacing: A Radionuclide Study

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          Abstract

          This study was undertaken to assess ventricular volumes and function by radionuclide angiography during asynchronous ventricular pacing in a group of 22 patients who needed an artificial pacemaker. 14 had ischaemic heart disease and 8 had primary disturbances of conduction of the impulse-forming system. The transition from sinus to a paced rhythm or increasing the pacing rate had little effect on patients with primary conduction disturbances. In contrast, in patients with ischaemic heart disease, the transition to a paced rhythm decreased significantly left ventricular end-diastolic (15.3 ± 4.7%) and stroke (26.3 ± 4%) volumes, ejection fraction (9.0 ± 4.4%), and cardiac output (21.0 ± 3.9%). Pacing at a progressively increasing heart rate showed that each patient had an optimal rate of pacing.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1984
          1984
          11 November 2008
          : 71
          : 6
          : 315-322
          Affiliations
          Departments of Cardiology and Nuclear Medicine, Hadassah-Hebrew University Hospital, Jerusalem, Israel
          Article
          173685 Cardiology 1984;71:315–322
          10.1159/000173685
          6525610
          © 1984 S. Karger AG, Basel

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          Page count
          Pages: 8
          Categories
          Original Paper

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