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contentuptodate· Content· item f38_20_39238

©2013 UpToDate ® Print Email Inverted U waves Electrocardiogram showing inverted U waves superimposed at the end of the T waves (arrows) in the lateral precordial leads. This finding is most often a subtle sign of ischemia. An unrelated complete right bundle branch block is also present (rSR' in lead V1 with prolonged QRS interval). Courtesy of Ary Goldberger, MD.