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Circulation, Vol 64, 845-852, Copyright © 1981 by American Heart Association

ARTICLES

Primary oxalosis with pan-conduction cardiac disease: electrophysiologic and anatomic correlation

BM Massie, S Bharati, MM Scheinman, M Lev, J Desai, E Rubeson and W Schmidt

A 27-year-old man with primary oxalosis and extensive visceral involvement was maintained on long-term chronic hemodialysis. He had an episode of presyncope associated with electrocardiographic findings of an erratic atrial rhythm, atrioventricular dissociation due to an accelerated junctional rhythm and right bundle branch block. Electrophysiologic studies showed irregular atrial depolarizations probably associated with multiple atrial pacemakers, atrial inexcitability, atrioventricular dissociation and infranodal conduction delay. These findings correlated well with extensive oxalate infiltration of the sinoatrial node and its approaches, the atrial preferential pathways, the approaches to the atrioventricular node, the atrioventricular node, and the His bundle and bundle branches. This is the first reported case of cardiac electrophysiologic abnormalities due to oxalate infiltration in a patient with primary oxalosis.