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The rhythm is sinus but the pr interval is prolonged (greater than 200ms) and the QRS is wide (> 120ms). The loss of the septal Q waves and the tall broad R waves in leads I, aVL and V6 are diagnostic of a left bundle branch block.
EKG World Encyclopedia http://cme.med.mcgill.ca/php/index.php , courtesy of Michael Rosengarten BEng, MD.McGill
Michael Rosengarten BEng, MD.McGill
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|current||04:07, 21 February 2012||3,004 × 1,599 (4.46 MB)||DarrelC|