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众所周知,冠状动脉造影示左前降支壁内段可受心肌肌桥挤压而在收缩期变窄或血管阴影密度降低.然而一般认为该现象并未减少冠状动脉血流量,故为良性.本文试析肥厚型心肌病病人左前降支(及其间隔支)收缩期受压的出现率和临床意义.1,619例经心导管和冠状动脉造影检查者中,肥厚型心肌病54(梗阻型41、非梗阻型13)例,主动脉瓣狭窄(继发性心肌肥厚)64例.左前降支收缩期受压指其收缩期内径缩小至少25%乃至于完全闭塞.间隔支受压指其收缩期部份血管段阴影消失,而其血管阴影消失部份超过间隔支总长的50%者为间
It is well-known that coronary angiography shows that the left anterior descending coronary artery wall can be squeezed by the myocardial bridge and narrowed in the systolic or vascular shadow densities, but it is generally believed that this phenomenon does not reduce the coronary blood flow, so it is benign. The incidence and clinical significance of systolic compression in the left anterior descending branch (and its septal branches) in patients with hypertrophic cardiomyopathy.1,619 cases of cardiac catheterization and coronary angiography were hypertrophic cardiomyopathy 54 (obstructive 41, Obstruction type 13) cases, aortic stenosis (secondary myocardial hypertrophy) in 64 cases.Anterior systolic left anterior systolic pressure refers to the contraction of the internal diameter of at least 25% or even completely occluded.Plasty branch pressure refers to the systolic Department Part of the shadow of the disappearance of the blood vessels, and disappearance of the vascular shadow of more than 50%