The Study of the Third Heart Sound in Relation to the Left Ventricular Filling and Wall Movement by Echocardiography

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  • FURUKAWA Keizo
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • MATSUURA Tohru
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • ENDO Naoto
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • TOHARA Masaru
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • ASAYAMA Jun
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • WATANABE Toshimitsu
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • MATSUKUBO Haruo
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine
  • IJICHI Hamao
    Second Department of Internal Medicine, Kyoto Prefectural University of Medicine

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タイトル別名
  • Study of the Third Heart Sound in Relat

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The left ventricular filling and wall movement were investigated in subjects with a third heart sound or ventricular gallop by echocardiography. Nine patients with ventricular gallop, who had left ventricular volume overload diseases, and 6 normal subjects with a third heart sound had higher normalized peak rate of increase of the left ventricular dimension (peak dD/dT/D) than 10 normal subjects without a third heart sound (p<0.01). The normalized lengthening rate in the rapid filling phase was also higher in patients with ventricular gallop than in normal subjects without a third heart sound (p<0.05). The time from the second heart sound to peak dD/dT/D and rapid filling time did not show statistically significant values between subjects with ventricular gallop or a third heart sound and those without a third heart sound.These results suggest that higher peak filling, larger filling volume in the rapid filling phase and more abrupt cessation of the outward movement of the left ventricular wall may be a cause of the production of ventricular gallop in patients with left ventricular volume overlaod and of the physiological third heart sound.

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