Advanced atrioventricular block and complete left bundle branch block in a case of Takayasu's aortitis.

A 56-year-old woman, who had received an aortic valve replacement suffered from complete left bundle branch block and advanced atrioventricular block. On the basis of marked systemic inflammatory findings on admission and histopathological findings on previous cardiac surgery, this patient was considered to have conduction disturbances that were a consequence of myocardial involvement of Takayasu's aortitis. The conduction disturbances improved rapidly after treatment with steroids.