左心室条索

THE LEFT VENTRICULAR BANDS

在130倒(成人80,儿童50)人心观察了游离于左室腔内的条索,条索出现率为77.7%。条索多从闻隔连至后乳头肌(52.9%)、前壁(18.6%)和前乳头肌(8.7%).直径多小于3mm,较粗的肉柱型条索多莲至前壁和前乳头肌。除连至后乳头肌尖部的条索纯系结缔组织外,其余皆含有浦氏纤维,系左束支的分支。心尖都的肉柱呈网状,下壁亦多呈网,前壁则多星肉柱状,这与条索的形态一致。就条索的发生、功能及临床意义进行了讨论。

The left ventricular bands were observed in 130 human hearts (80 adults, 50 children). They occur in 77.7% of human hearts. Among these bands, 52.9% originate from the septum and attach to the posterior papillary muscle, 18.6% attach to the anterior wall and 8.75 to the anterior papillary muscle. Their diameter is commonly less than 3mm. The thicker trabecular type of the bands generally attach to the anterior wall and anterior papillary muscle. All the bands are composed of Purkinje fibers except the thiner ones which arise from the septum and attach to the tip of the posteripr papillary muscle. The trabeculae carneae in all the apex regions and in most of the inferior walls are of network type, but in the anterior walls they are of the trabecular type. The development, function and clinical significance of the bands are discussed.