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Regular Wide QRS Complex Tachycardia During Atrial Fibrillation in a Patient with Preexcitation Syndrome: A Case Report
Authors:KOSTAS GATZOULIS  MD    MARK D CARLSON  MD    NANCY J JOHNSON  MD    LEE A BIBLO  MD    ALBERT L WALDO  MD
Institution:Department of Medicine, and Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
Abstract:AV Conduction in WPW. We report an unusual case of a relatively regular wide QRS complex tachycardia alternating with periods of an irregular narrow QRS complex tachycardia during atrial fibrillation in a patient with Wolff-Parkinson-White syndrome. Both tachycardias resulted from atrial fibrillation, the wide QRS complex tachycardia being due to 2:1 AV conduction of a type I atrial fibrillation across a posteroseptal accessory AV connection.
Keywords:Wolff-Parkinson-White syndrome  atrial fibrillation  atrial electrogram  wide QRS complex tachycardia
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