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Emergency Medicine International
Volume 2010, Article ID 879751, 4 pages
Case Report

Wenckebach Block due to Hyperkalemia: A Case Report

Department of Emergency Medicine, Alameda County Medical Center, Highland Hospital, Highland Campus, 1411 East 31st Street, Oakland, CA 94602, USA

Received 30 November 2010; Accepted 28 December 2010

Academic Editor: Rade B. Vukmir

Copyright © 2010 Aparajita Sohoni et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Hyperkalemia is a commonly encountered electrolyte abnormality that can significantly alter normal cardiac conduction. Potentially lethal dysrhythmias associated with hyperkalemia include complete heart block and Mobitz Type II second-degree AV block. We report a unique case of Mobitz Type 1 second-degree atrioventricular (AV) block, known commonly as Wenckebach, due to hyperkalemia. The patient's symptoms and electrocardiogram (ECG) evidence of Wenckebach block resolved with lowering of serum potassium levels, with subsequent ECG showing first-degree AV block. This paper highlights an infrequently reported dysrhythmia associated with hyperkalemia that emergency physicians should be familiar with.