| Autor: |
Hada, Yoshiyuki, Amano, Keiko, Yamaguchi, Tsuneo, Takenaka, Katsu, Takahashi, Hisako, Takikawa, Reiko, Hasegawa, Ichiro, Takahashi, Toshiyuki, Suzuki, Junichi, Sakamoto, Tsuguya, Sugimoto, Tsuneaki |
| Zdroj: |
Journal of the American College of Cardiology; January 1986, Vol. 7 Issue: 1 p43-50, 8p |
| Abstrakt: |
Echophonocardiography and pulsed Doppler echocardiography were performed in 30 patients with mitral stenosis (19 with atrial fibrillation and 11 with sinus rhythm) to investigate the genesis of the presystolic component or small apical vibrations preceding the first heart sound in mitral stenosis. In 27 patients, mitral valve closure preceded or coincided with tricuspid valve closure regardless of the preceding RR interval. Of three patients whose tricuspid valve closed prematurely, two had a prolonged PR interval.The soft apical vibrations, which were recorded during the final rapid closing motion of the mitral valve echogram (B-C slope), began with the upstroke of the apexcardiogram. During this event the pulsed Doppler echocardiogram revealed a deceleration in the velocity of mitral inflow. In two exceptional patients with a prolonged PR interval, this apical sound was separated from a presystolic rumble that occurred during an accelerated phase of mitral inflow or at the A wave of mitral valve echograms. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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