左心室假腱索的形态学观察

Morphology observation of left ventricular false tendons

目的观察左心室假腱索的形态特征,为探讨假腱索与多种临床现象产生的机制提供依据。方法用68例成人离体心脏标本,观察、测量左心室假腱索的位置、数目、直径等指标。结果52例发现假腱索共118条,出现率为76.5%,平均每例(1.74±1.08)条。假腱索多附着于室间隔和前、后乳头肌,乳头肌和游离壁,室间隔和游离壁之间。其长度为(15.26±7.86)mm,中间段和两端的直径分别为(0.67±0.61)mm和(0.92±0.67)mm。结论左心室假腱索是心腔内的解剖结构,对心脏功能可能有一定影响。

Objective To observe the morphology feature of left ventricular false tendons and provide the basis for discovering the mechanism of clinical phenomena that related to false tendons. Methods The position, number, and diameter of the left ventrieular false tendons of 68 adault cadavers were observed and measured. Results There were 118 left ventricular false tendons in 52 hearts, and the incidence was 76.5 %. On the average,each heart had 1.74±1.08. False tendons,mostly attached to the axea between the interventrieular septurn and the posterior papillary muscle, the papillary mnsele and the free wall, and interventrieular septum and the free wall. The lengths of left ventrieular false tendons were （ 15.26 ± 7.86）mm. The diameters of the center and ends were （0.67 ± 0.61 ）mm and （0.92 ± 0.67）mm, respectively. Conclusion Left ventrieular false tendons are human anatornieal structure of cardiac chambers, and they may irfluence the function of the hearts.