Electrical alternans: Difference between revisions
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Revision as of 02:08, 9 August 2012
Pericarditis Microchapters |
Diagnosis |
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Treatment |
Surgery |
Case Studies |
Electrical alternans On the Web |
American Roentgen Ray Society Images of Electrical alternans |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Electrical alternans is an electrocardiographic phenomenon of alternation of QRS complex amplitude or axis between beats. It is seen in cardiac tamponade and is thought to be related to changes in the ventricular electrical axis due to fluid in the pericardium.
The presence of micro-voltage and electrical alternans suggests pericardial effusion and cardiac tamponade.
Electrocardiographic Examples