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  • Title: [Intermittent ventricular pre-excitation in the presence of total atrioventricular block].
    Author: Haertel LA, Moffa PJ, Grupi CJ, Camargo PA, Pereyra PA, Lima EV.
    Journal: Arq Bras Cardiol; 1993 Nov; 61(5):307-10. PubMed ID: 8147730.
    Abstract:
    An 8 year old child suffering from asthenia and complete atrioventricular block, probably congenital. During the tread-mill test there was a sudden electrocardiogram change to a ventricular preexcitation pattern. Besides this rare association, we emphasize the importance of the autonomic balance over the accessory pathway's electrophysiological properties. The appearance of a latent accessory pathway might be a substitutive mechanism to counterbalance the serious impairment of physiologic atrioventricular conduction.
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