Ker J. The Double U Wave—Should the Electrocardiogram be Interpreted Echocardiographically?
CLINICAL MEDICINE INSIGHTS: CARDIOLOGY 2010;
4:77-83. [PMID:
20981131 PMCID:
PMC2956474 DOI:
10.4137/cmc.s5892]
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Abstract
The U wave is still an electrocardiographic deflection of enigmatic origin. Numerous hypotheses on its origin have been formulated, but to date none has been conclusively proven. Recently, a report described the first case of bifid (or notched) U waves. Until then this phenomenon has only been described in the T wave. This is the first report of double U waves—two separate deflections, ascribed to an accessory papillary muscle.
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