A degenerative lesion of the approach to the atrioventricular node producing second-degree and third-degree atrioventricular block

We report a case of a degenerative approach lesion in an 83-year-old male with diabetes mellitus, hypertension, and ischemic heart disease. His ECGs changed from first-degree atrioventricular (AV) block 14 years ago, to third-degree AV (A-H) block. A pacemaker was implanted for bradycardia. He died...

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Bibliographic Details
Published in:	Pacing and clinical electrophysiology Vol. 15; no. 12; p. 2263
Main Authors:	Kawai, S, Fu, L, Aziki, K, Okada, R, Katoh, K
Format:	Journal Article
Language:	English
Published:	United States 01-12-1992
Subjects:	Aged Aged, 80 and over Atrioventricular Node - pathology Atrioventricular Node - physiopathology Bradycardia - etiology Bradycardia - therapy Cardiac Pacing, Artificial Electrocardiography Heart Block - diagnosis Heart Block - etiology Heart Block - physiopathology Heart Conduction System - pathology Heart Conduction System - physiopathology Humans Male Pacemaker, Artificial Time Factors
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Summary:	We report a case of a degenerative approach lesion in an 83-year-old male with diabetes mellitus, hypertension, and ischemic heart disease. His ECGs changed from first-degree atrioventricular (AV) block 14 years ago, to third-degree AV (A-H) block. A pacemaker was implanted for bradycardia. He died 4 years later from heart and renal failure. Serial sections through the conduction system revealed total depletion and fatty replacement of the atrial muscle at the approaches to the AV node.
ISSN:	0147-8389
DOI:	10.1111/j.1540-8159.1992.tb04170.x