Original file (3,004 × 656 pixels, file size: 666 KB, MIME type: image/jpeg)
The reason why the pacer was pacing at 75/min in the DDD mode was because there is a supraventricular tachycardia (note atrial activity, marked with the turquise arrows, moving through the ventricular complexes) at about 150/min and the DDD pacer was producing 2:1 A/V block. In tracing above with the pacemaker set to a VVI mode, the pacemaker no longer senses the atrium and paces at the set rate of 70/min.
EKG World Encyclopedia http://cme.med.mcgill.ca/php/index.php , courtesy of Michael Rosengarten BEng, MD.McGill
Michael Rosengarten BEng, MD.McGill
Click on a date/time to view the file as it appeared at that time.
|current||07:33, 21 February 2012||3,004 × 656 (666 KB)||DarrelC|
- You cannot overwrite this file.