Measurement of Cardiac Events by a Precise Technique Comparison with Vibrocardiogam

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概要

• 論文の詳細を見る

• (1) VbCGs were obtained from the left parasternal area in dogs simultaneously with intracardiac pressure curves, the time derivatives of the pressure curves, and with ventricular "force" recordings. By using the technique of polaroid photography from an oscilloscopic screen with sweep speeds up to 1, 000mm./sec. transducer tipped catheters measurement accuracies of better than 2msec. were achieved.(2) The VbCG points "H", "J1", "J2" and "L" were found to correlate with: the initial rise of left ventricular pressure; the juncture of the slow and rapid phases of isovolumetric contraction; and opening and closure of the aortic valve, respectively. "J3 was found to correlate with the peak flow achieved during ejection.(3) Pressure time-derivatives and ventricular force recordings from the left heart showed the same time relationships to the VbCG waves.(4) No close relationships were found between VbCG waves and right heart pressure phenomena.(5) The VbCG can be used as a simple external technique to time the major events of the cardiac cycle with an accuracy of 2 or 3msec.

• International Heart Journal刊行会の論文

著者

• NAKAKURA Shigeo

  Instit. of Cardiovasc. Dis. Kurume Univ. Sch. of Med.

• WEGNER Stanley

  Institute for Medical Research, Cedars of Lebanon Hospital

• WEGNER Stanley

  Institute for Medical Research, Cedars of Lebanon Division, Cedars-Sinai Medical Center

• NAKAKURA Shigeo

  Institute for Medical Research, Cedars of Lebanon Hospital

• AGRESS Clarence

  University of California, Department of Medicine

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