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(Chest. 1973;64:377-379.)
© 1973 American College of Chest Physicians

U Wave Alternans and Increased Ventricular Irritability

Tali Bashour M.D.1; Jorge C. Rios M.D.1; and Patrick A. Gorman M.D.1

1 Division of Cardiology, Department of Medicine, George Washington University Medical Center and the District of Columbia General Hospital, Washington, D.C.

Electrical alternation of a single electrocardiographic wave is rare and has not been adequately explained. We describe a case of U wave alternans associated with extreme ventricular irritability. Relationship to hypomagnesemia is indicated by rapid response to magnesium therapy. Mechanisms that may be responsible for this phenomenon are discussed.




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[Abstract] [Full Text]




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