https://en.ecgpedia.org/index.php?title=McGill_Case_115&feed=atom&action=historyMcGill Case 115 - Revision history2024-03-29T09:14:22ZRevision history for this page on the wikiMediaWiki 1.39.5https://en.ecgpedia.org/index.php?title=McGill_Case_115&diff=14916&oldid=prevDarrelC: Created page with "{{McGillcase| |previouspage= McGill Case 114 |previousname= McGill Case 114 |nextpage= McGill Case 116 |nextname= McGill Case 116 }} [[File:E0003115.jpg|thumb|600px|left|The ..."2012-02-16T22:23:53Z<p>Created page with "{{McGillcase| |previouspage= McGill Case 114 |previousname= McGill Case 114 |nextpage= McGill Case 116 |nextname= McGill Case 116 }} [[File:E0003115.jpg|thumb|600px|left|The ..."</p>
<p><b>New page</b></p><div>{{McGillcase|<br />
|previouspage= McGill Case 114<br />
|previousname= McGill Case 114<br />
|nextpage= McGill Case 116<br />
|nextname= McGill Case 116<br />
}}<br />
<br />
[[File:E0003115.jpg|thumb|600px|left|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. <br />
The "pr" interval is a little short at about 120 ms. <br />
The pacer should have started to pace he atrium when set at 100/min. <br />
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. <br />
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. <br />
The treating physician decided to leave the patient in this rhythm. <br />
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.]]</div>DarrelC