https://en.ecgpedia.org/index.php?title=McGill_Case_108&feed=atom&action=historyMcGill Case 108 - Revision history2024-03-29T10:15:51ZRevision history for this page on the wikiMediaWiki 1.39.5https://en.ecgpedia.org/index.php?title=McGill_Case_108&diff=14862&oldid=prevDarrelC: Created page with "{{McGillcase| |previouspage= McGill Case 107 |previousname= McGill Case 107 |nextpage= McGill Case 109 |nextname= McGill Case 109 }} [[File:E0003108.jpg|thumb|600px|left|The ..."2012-02-16T08:45:49Z<p>Created page with "{{McGillcase| |previouspage= McGill Case 107 |previousname= McGill Case 107 |nextpage= McGill Case 109 |nextname= McGill Case 109 }} [[File:E0003108.jpg|thumb|600px|left|The ..."</p>
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[[File:E0003108.jpg|thumb|600px|left|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. <br />
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.]]</div>DarrelC