[Atrioventricular blocks of bacterial endocarditis. 8 cases comprising histological study of the conduction system].

The authors report 8 cases of complete atrio-ventricular block (AVB) which came on during bacterial endocarditis. The aortic valve was more frequently affected (6/8). The conduction disorder is necessarily unstable.

[Congenital atrio-ventricular blocks in infants. Histological study of the conduction system].

The authors present a clinico-pathological study of three cases of complete congenital atrio-ventricular block in the infant. In one case the disorder was familial, and the heart was macroscopically normal. In the other two cases, the associated abnormalities (complete discontinuity of the aortic arch in one, and situs inversus with a patent ductus and high VSD in the other) were not responsible for the conductive defect.