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The recording shows sinus rhythm with a marked first degree heart block. In this case the PR interval is about 400 ms. A Holter monitor showed second degree but not third degree A/V 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||11:11, 21 February 2012||3,004 × 1,599 (4.5 MB)||DarrelC|