Kurosawa H, Becker A E
Int J Cardiol. 1985 Jan;7(1):13-20. doi: 10.1016/0167-5273(85)90166-4.
In the definitive heart the anterior continuation of the main conduction axis is considered to be the right bundle branch. In this study three hearts from neonates and infants were examined in which this situation did not pertain. The conduction axis continued beyond the point of origin of the right bundle branch as a dead-end tract. In two normal hearts the tract then faded out in the central fibrous body. In one heart with Fallot's tetralogy it disappeared on the crest of the trabecular septum. Although we are unaware of any functional significance of these tracts, our findings are of considerable interest in understanding the development of the atrioventricular conduction system.
在成熟心脏中，主传导轴的前延续部分被认为是右束支。在本研究中，对3例新生儿和婴儿的心脏进行了检查，其中并非如此。传导轴在右束支起点之外继续延伸，形成一条盲端束。在2例正常心脏中，该束随后在中央纤维体中逐渐消失。在1例法洛四联症心脏中，它在小梁间隔嵴上消失。虽然我们不清楚这些束的任何功能意义，但我们的发现对于理解房室传导系统的发育具有相当大的意义。
