[Intermittent ventricular pre-excitation in the presence of total atrioventricular block].
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.
Haertel
L A
LA
Instituto do Coração do Hospital das Clínicas-FMUSP, Blumenau, SC.
Moffa
P J
PJ
Grupi
C J
CJ
Camargo
P A
PA
Pereyra
P A
PA
Lima
E V
EV
D002648:Child; D004562:Electrocardiography; D005080:Exercise Test; D006327:Heart Block / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008297:Male; D014927:Wolff-Parkinson-White Syndrome / Q000150:complications* / Q000175:diagnosis
Pré-excitação ventricular intermitente na presença de bloqueio atrioventricular total.