Figure 4.

Nodo-ventricular and fasciculo-ventricular pathways: Both sections were taken from human hearts shown at autopsy to exhibit Ebstein’s malformation. (A) shows a direct nodoventricular connection between the inferior rightward extention of the atrioventricular (AV) node and the crest of the ventricular septum, while (B) shows a fasciculo-ventricular connection given off from the conduction axis prior to the origin of the right bundle branch. The sections were stained using the trichrome technique.