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Vol. 67. Issue 10.
Pages 853 (October 2014)
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Vol. 67. Issue 10.
Pages 853 (October 2014)
ECG Contest
DOI: 10.1016/j.rec.2014.05.007
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Response to ECG, September 2014
Respuesta al ECG de septiembre de 2014
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Adolfo Fontenla
Unidad de Arritmias, Servicio de Cardiología, Hospital Universitario 12 de Octubre, Madrid, Spain
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Rev Esp Cardiol. 2014;67:76810.1016/j.rec.2014.05.006
Adolfo Fontenla
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Flecainide administration produced a lengthening of the PR interval and disappearance of the abnormal Q waves observed in V1-V3. This occurred because the drug interrupted conduction through a right free wall accessory pathway that was causing the pre-excitation seen on the baseline electrocardiogram, leaving a right bundle branch block pattern. Nonetheless, the finding of this accessory pathway likely does not explain the mechanism causing the syncopes, which appear to be situational.

Copyright © 2014. Sociedad Española de Cardiología
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