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  • Title: A rare form of trifascicular block with intermittent complete atrioventricular block in a patient with Chagas disease.
    Author: Femenia F, Cuesta A, Mauricio A.
    Journal: Cardiol J; 2009; 16(6):582-4. PubMed ID: 19950099.
    Abstract:
    Trifascicular block, which consists of impaired conduction in the three main fascicles of the ventricular conduction system, may progress to high-grade or complete atrioventricular block. Exceptionally, it is possible to register in the same patient paroxysmal alternating atrioventricular block and bilateral bundle branch block. This is the electrocardiogram of a male, 60 year-old patient coming from an endemic area, with positive serology for Chagas disease, with the exclusively dromotropic form (there are no signs of cardiac muscle involvement), manifest by repetitive pre-syncope and syncope episodes.
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