Title: Ebstein's Anomaly<br/>Author: Semhar Tewelde<br/><a href='http://umem.org/profiles/faculty/352/'>[Click to email author]</a><hr/><p style="text-align: left; ">
<span style="font-size:14px;"><span style="font-family: 'times new roman', times, serif; "><strong style="text-decoration: underline; ">Ebstein's Anom</strong><u><strong>aly</strong></u></span></span></p>
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Congenital defect of the tricuspid valve (TV) and the right ventricle (RV)</li>
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TV septal and posterior leaflets are apically displaced <span style="color: rgb(0, 0, 0); line-height: 19px; ">resulting in "atrialization" of a portion of the right ventricle (ultimately a large right atrium and small right ventricle)</span></li>
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<span style="color: rgb(0, 0, 0); line-height: 19px; ">~40-50% of individuals with Ebstein anomaly have evidence of Wolf-Parkinson-White, secondary to the atrialized right ventricle</span></li>
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ECG abnormalities include:
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Right atrial enlargement or tall and broad P waves (Himalayan P waves) </li>
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Prolonged PR interval</li>
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Right bundle branch block </li>
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Low amplitude QRS complexes in the right precordial leads</li>
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T wave inversions V1-V4 and/or Q waves V1-V4</li>
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<img alt="" src="https://umem.org/files/uploads/content/E000403.jpg" style="width: 600px; height: 600px; " /></p>
<fieldset><legend>References</legend>
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Osiro S, Tiwari K, Mathenge N, et al. When Lithum Hurts: A Look at Ebstein Anomaly. Cardiology in Review. Oct 2013, Vol 21(5); pgs 257-263.</p>
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