https://en.ecgpedia.org/index.php?title=Answer_-_Case_of_the_month_(Dec_2011)&feed=atom&action=historyAnswer - Case of the month (Dec 2011) - Revision history2024-03-28T15:21:15ZRevision history for this page on the wikiMediaWiki 1.39.5https://en.ecgpedia.org/index.php?title=Answer_-_Case_of_the_month_(Dec_2011)&diff=13876&oldid=prevSecretariat: Created page with "800px '''Q: After the first two complexes the QRS complex changes. What could explain this?''' <div style="padding-left:24px"> A. Axis rotation due to left..."2011-12-12T10:05:18Z<p>Created page with "<a href="/index.php?title=File:E000572.jpg" title="File:E000572.jpg">800px</a> '''Q: After the first two complexes the QRS complex changes. What could explain this?''' <div style="padding-left:24px"> A. Axis rotation due to left..."</p>
<p><b>New page</b></p><div>[[File:E000572.jpg|800px]]<br />
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'''Q: After the first two complexes the QRS complex changes. What could explain this?'''<br />
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A. Axis rotation due to left anterior hemiblock<br />
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B. Intermittent pre-exitation<br />
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C. Sodium channel blocker infusion<br />
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D. Intermittent right bundle branch block<br />
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'''Answer:'''<br />
B. Intermittent pre-exitation. See http://en.ecgpedia.org/wiki/Wpw for more information about pre-exitation.</div>Secretariat