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This is a ladder diagram and surface tracing from a patient with a dual chamber pacemaker. The pacer is pacing the atrium (star) and sensing the ventricle. Note the refractory periods (boxes) of the atrium the ventricle and the post ventricular atrial refractory period.
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||22:02, 16 February 2012||3,004 × 943 (519 KB)||DarrelC|