Cardiac tamponade electrocardiogram
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Varun Kumar, M.B.B.S.
Electrocardiogram
Tamponade may be associated with ST segment changes on the electrocardiogram [1]. Given the insulating properties of the fluid, there may also be low voltage QRS complexes [2]. In some cases, electrical alternans will be present in which case the height of the QRS varies from beat to beat. Tachycardia will likely be present as well.
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Cardiac Tamponade with low voltage QRS complex and Electrical Alternans
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12 lead EKG shows Cardiac Tamponade with Electrical Alternans
