Mucormycete Infiltration in the Cardiac Conduction System.

A 74-year-old woman who took immunosuppression therapy died from a complete atrioventricular block and its complications. Autopsy findings suggested that mucormycosis of the cardiac conduction system had caused her complete atrioventricular block. This case demonstrates that infectious causes, including fungal infections like mucormycosis, can produce sudden death in immunocompromised patients.