Korean J Med.
2005 May;68(5):562-565.
A case of hyperkalemia-induced complete atrioventricular block with a narrow QRS complex
- Affiliations
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- 1Department of Internal Medicine, Wonkwang University School of Medicine, The Institute of Medical Sciences, Iksan, Korea. cardionh@wonkwang.ac.kr
Abstract
- Hyperkalemia induces wide spectrum of electrocardiographic abnormalities on its severity. In general, hyperkalemia produces a gradual depression of the excitability, conduction velocity of the specialized pacemaker cells and conducting tissues throughout the heart. High serum potassium levels are thought to impair the conduction in the Purkinje fibers and ventricles more than in the AV node, although complete AV block can occur. So, hyperkalemia-induced complete AV block without prolongation of the QRS complex is a rare condition. We report a case of complete AV block without QRS complex widening in patient with hyperkalemia. To our knowledge, this is the first reported case in Korea.
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