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== Summary == | |||
{{Information | |||
|Description = The ventricular rate of the patient is about 72 beats/minute and it would appear that there is a p wave in front of each QRS complex. | |||
The "pr" interval is a little short at about 120 ms. | |||
The pacer should have started to pace he atrium when set at 100/min. | |||
The failure to do so suggests that the pacing system is non-functional (depleted pacemaker battery, broken lead etc.) or that the pacer is sensing an atrial rhythm faster than 100/min. | |||
In this case the pacer is sensing an SVT with an atrial rate of about 150/min. which explains the lack of pacing when the pacer is set to 100/min. | |||
The treating physician decided to leave the patient in this rhythm. | |||
It is interesting to note that some SVTs and atrial fibrillation can "cure" a sick sinus patient of their bradycardia and the need for a pacemaker. In those cases though that convert to atrial fibrillation anticoagulants are usually considered. | |||
|Category = [[Case_reports_from_Michael_Rosengarten|Case reports by Michael Rosengarten]] | |||
|Source = EKG World Encyclopedia http://cme.med.mcgill.ca/php/index.php , courtesy of Michael Rosengarten BEng, MD.McGill | |||
|Date = 2012 | |||
|Author = Michael Rosengarten BEng, MD.McGill | |||
|Permission = {{by-nc-sa-3.0}} | |||
|other_versions = None | |||
}} | |||