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This is a two lead rhythm strip from a patient in the emergency room. The rhythm is sinus with second degree A/V block. Note the progressive lengthening of the pr interval and that the interval that brackets the blocked p wave is less than twice that of the RR interval. This recording suggests a Mobitz I A/V block, but some care has to be taken as the QRS that ends the pause in at least one case looks like a nodal escape beat.
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||05:24, 21 February 2012||3,004 × 664 (372 KB)||DarrelC|