From ECGpedia
Revision as of 12:56, 21 February 2012 by DarrelC (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Original file(3,004 × 906 pixels, file size: 535 KB, MIME type: image/jpeg)



This is a tracing from a patient in the pacemaker clinic. The pacemaker was set to VDD mode. There is group beating. The rhythm begins with a ventricular paced beat which occurs at the pacing interval as set by the programmed rate. There is then a retrograde P that is sensed by the atrial channel of the pacemaker and a pacemaker mediated tachycardia begins. The tachycardia stops probably because a retrograde P was blocked. Lack of capture of the atrium either seen with the VDD mode of pacing or with failure of the atrial pacing lead to capture is a mechanism for the initiation of pacemaker mediated tachycardia.


Case reports by Michael Rosengarten


EKG World Encyclopedia , courtesy of Michael Rosengarten BEng, MD.McGill




Michael Rosengarten BEng, MD.McGill


Creative Commons Attribution Noncommercial Share-Alike License

File history

Click on a date/time to view the file as it appeared at that time.

current12:51, 21 February 2012Thumbnail for version as of 12:51, 21 February 20123,004 × 906 (535 KB)DarrelC (talk | contribs)
  • You cannot overwrite this file.

The following page uses this file: