Left Ventricular Asynergy in Mitral Valve Diseases A Cineangiographic Study
1975; Japanese Heart Journal Assoc; Volume: 16; Issue: 3 Linguagem: Inglês
10.1536/ihj.16.221
ISSN1573-8612
AutoresTadashi KOIDE, Atsuo NAKANISHI, Iwao Ito, Hisakazu Yasuda, Yutaka Takabatake, Keiji Ueda, Yasuro Sugishita, Yasumi Uchida, Katsuhiko Ozeki, Kikuo Machida, Shigenori Morooka, Katsuhiko Nakajima, Masaaki Kakihana,
Tópico(s)Muscle activation and electromyography studies
ResumoMode of left ventricular contraction was studied by cine left ventriculography in 22 cases with mitral valve diseases and 7 control cases. In rheumatic mitral valve diseases, local hypokinesis of the left ventricular wall and poor contraction of the mitral annulus were observed frequently, at various location and to various extent. Transient asynergic motion of local wall was also seen either during systole or during diastole. Local hypokinesis was seen even in normal-sized left ventricles, and was associated with decreased cardiac pump performance, when its localization was extensive. Severe mitral regurgitation of rheumatic nature was always associated with poor contraction of the mitral annulus, although the reverse was not true.
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