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J Electrocardiol. 2012 Mar;45(2):167-9. doi: 10.1016/j.jelectrocard.2011.11.008. Epub 2012 Jan 5.

Escape-echo bigeminy.

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1
Florida Heart Rhythm Institute, Tampa, FL, USA. ssbarold@aol.com

Abstract

Escape-capture bigeminy is a well-known arrhythmia characterized by group beating of a junctional beat followed by a conducted sinus beat. We report a variant of this arrangement where a junctional beat gives rise to a retrograde P wave, which is then conducted back to the ventricles producing a hitherto undescribed combination (escape-echo bigeminy) resembling escape-capture bigeminy. The clinical significance of escape-echo bigeminy appears similar to that of classic escape-capture bigeminy.

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