Analysis of Diastolic Motion of Posterior Aortic Root and Evaluation of Diastolic Function of Left Ventricle

  • Sada Hideo
    Department of Internal Medicine, Kitasato University School of Medicine
  • Kawabata Kazuto
    Department of Internal Medicine, Kitasato University School of Medicine
  • Kikawada Ryuichi
    Department of Internal Medicine, Kitasato University School of Medicine

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Other Title
  • 大動脈基部後壁運動分析による左室拡張機能の評価

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Description

The diastolic motion of the posterior wall of the aortic root was recorded by M-mode echocardiography in 12 normal cases and 66 cases with cardiac disease, including cardiomyopathy (HCM and DCM), ischemic heart disease and hypertension. The parameters of the diastolic motion of the aortic root were analysed and particularly investigated in reference to the diastolic function of the left ventricle. The ratio of the amplitude of the rapid filling wave to the amplitude of the total diastolic wave of the aortic root wall, measured by echocardiogram (F/OV) was in close correlation with that of the left ventricle, determined by apexcardiogram (f/Oa) ; and the ratio of the amplitude of the atrial contraction wave to the amplitude of the total diastolic wave of the aortic root wall, as indicated by echocardiogram (A/OV), was also correlated with that of the left ventricle measured by apexcardiogram (a/Oa). This study was focused on the motion of the aortic root wall in the rapid filling phase, and factors influencing the slope of early diastolic posterior aortic root motion (AoVd) were analysed. The value of AoVd was in close correlated with the mean descent velocity of the left ventricle wall in the same phase, and inversely with the time constant in the isovolumic relaxation phase and the isovolumic relaxation time of the left ventricle. With the exception of DCM, the value of AoVd was also in correlation with DDR of the mitral valve, and in the DCM group it correlated with the cardiac index. We concluded that AoVd is useful and easily obtainable echocardiographic parameter for evaluating the early diastolic function of the left ventricle.

Journal

  • Kitasato medicine

    Kitasato medicine 17 (5), 444-452, 1987-10-31

    Kitasato University

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