Pathology of the Cardiac Conduction System in a Case of Diphtheria Associated with Atrial Arrhythmias and Heart Block

Abstract

The histopathology of the sinus node, the atrioventricular node, and the atrioventricular bundle of the heart from a child dying of diphtheria is presented. The terminal illness included atrial arrhythmias and heart block. [see figure in the PDF file] [see figure in the PDF file] The possible importance of the neuropathology of the diphtheritic heart is indicated.