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  • Title: Trifascicular block with asynchronous intraventricular recovery and "supernormal" AV conduction.
    Author: Oreto G, Satullo G, Luzza F, Carerj S, Arrigo F, Schamroth L.
    Journal: J Electrocardiol; 1989 Jul; 22(3):257-61. PubMed ID: 2760560.
    Abstract:
    The authors present a case of trifascicular block: complete right bundle branch block, tachycardia-dependent left anterior hemiblock, and bradycardia-dependent left posterior hemiblock. There is, in addition, a complicating independent AV junctional rhythm that is in most instances not affected by the conducted sinus impulses. Occasionally, however, this focus is discharged by very early sinus impulses that are unexpectedly conducted to the ventricles (a manifestation of "supernormal" conduction). A complex electrocardiographic pattern results from the interplay of the aforementioned mechanisms.
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