Katona A, Márk L, Deli L
Békés Megyei Képviselötestület Pándy Kálmán Kórháza, Gyula, II. sz. Belgyógyászat.
Orv Hetil. 1995 Jul 23;136(30):1603-6.
Cardiac apex hardly changes its location during the time of cardiac cycle, but the mitral anulus--representing cardiac base--has a systolic descent toward the apex and in diastole moves to the left atrium. The whole amplitude of mitral anulus motion is so useful indicator of left ventricular systolic function as ejection fraction derived from enddiastolic and endsystolic parameters. Mitral anulus motion amplitude easy to measure noninvasively by echocardiography. Authors examined 110 patients with their first, Q-type acute myocardial infarction 7-10 days after the onset of symptoms. In the same time ejection fraction value was assessed by radionuclide ventriculography. Data of ejection fraction and mitral anulus motion amplitude were compared. Their conclusions: 1. mitral anulus motion amplitude well correlated with left ventricular ejection fraction 2. patients had a decreased mitral anulus motion amplitude at the site of infarction 3. investigation of mitral anulus motion amplitude is an useful and easy to make method to assess of systolic function of left ventricle in acute myocardial infarction.
心尖在心动周期中位置几乎不变，但代表心底的二尖瓣环在收缩期朝着心尖下移，舒张期则移向左心房。二尖瓣环运动的整个幅度是左心室收缩功能的一个非常有用的指标，如同从舒张末期和收缩末期参数得出的射血分数一样。二尖瓣环运动幅度很容易通过超声心动图进行无创测量。作者检查了110例症状出现后7至10天首次发生Q波型急性心肌梗死的患者。同时通过放射性核素心室造影评估射血分数值。比较射血分数和二尖瓣环运动幅度的数据。他们的结论：1. 二尖瓣环运动幅度与左心室射血分数密切相关；2. 梗死部位的患者二尖瓣环运动幅度降低；3. 二尖瓣环运动幅度的研究是评估急性心肌梗死左心室收缩功能的一种有用且易于实施的方法。
