Congenital complete atrioventricular block and preexcitation syndrome: a well-matched partner.
A patient who had been previously diagnosed with congenital complete atrioventricular block (CCAVB) twenty years ago developed atrioventricular (AV) conduction through an accessory pathway (AP). With enhanced sympathetic tone (exercise, isoproterenol), 1:1 conduction down the AP occurred. An electrophysiologic study confirmed a suprahissian AV block and the presence of an AP. The AP was located on the left side and posterior. The absence of retrograde conduction through the AP and also a long conduction time were demonstrated.
Rubio
Jose Amador
JA
Cardiology Unit, Fundación Hospital Alcorcón-Madrid, Spain. jarubio@fhalcorcon.es
Saez
Pilar
P
Jimenez
Jose Julio
JJ
Robles
Pablo
P
D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006330:Heart Defects, Congenital / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D011226:Pre-Excitation Syndromes / Q000175:diagnosis* / Q000503:physiopathology