https://en.ecgpedia.org/index.php?title=File:E340.jpg&feed=atom&action=historyFile:E340.jpg - Revision history2024-03-28T09:40:00ZRevision history for this page on the wikiMediaWiki 1.39.5https://en.ecgpedia.org/index.php?title=File:E340.jpg&diff=15830&oldid=prevDarrelC at 10:45, 21 February 20122012-02-21T10:45:08Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:45, 21 February 2012</td>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Summary ==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{Information</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Description = This is an EKG recording from and elderly woman with complete heart block. She is having an Intermedics Quantum pacemaker (VVI) replaced with a Medtronic Preva DDD pacemaker. The Quantum is implanted in the left pectoral area and is set to V00 mode at 72/min, the Preva is implanted in the right pectoral area and set to VVI at 40/min. A magnet is placed over the Preva near the middle of the tracing. Both pacemakers are in a unipolar mode.</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">This is an interesting tracing as the two pacemaker leads where in a similar position in the left ventricle. This is clearly seen as the QRS morphology for both types of paced beats are identical. The morphology is a left bundle like pattern consistent with implantation of the electrode in the right ventricle as desired. Of interest is the difference in the polarity in lead I of the pacer spikes. The spike is positive for the pacer in the left pectoral region and negative for the pacer in the right pectoral area. As the pacemaker is the positive pole and the tip of the electrode the negative pole, this makes sense as lead I has a positive pole on the left shoulder and a negative one on the right. </ins></div></td></tr>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Category = [[Case_reports_from_Michael_Rosengarten|Case reports by Michael Rosengarten]]</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Source = EKG World Encyclopedia http://cme.med.mcgill.ca/php/index.php , courtesy of Michael Rosengarten BEng, MD.McGill </ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Date = 2012</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Author = Michael Rosengarten BEng, MD.McGill </ins></div></td></tr>
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</table>DarrelChttps://en.ecgpedia.org/index.php?title=File:E340.jpg&diff=15828&oldid=prevDarrelC at 10:44, 21 February 20122012-02-21T10:44:33Z<p></p>
<p><b>New page</b></p><div></div>DarrelC