title: You can't judge a book by its cover: a pseudo 1st degree A-V block in apparent absence of retrograde conduction.
abstract: We report 3 tracings from an electrophysiological study in which the appearance of a pseudo 1st degree A-V block helped to unmask the presence of a retrograde conduction, previously unrecognized. Our case highlights the importance in specific cases to have more than 2 intracardiac tracings during an electrophysiological study.
authors: Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium. sorgente.antonio@gmail.com
authors: Antonio
authors: A
authors: Sorgente
authors: Yoshinao
authors: Y
authors: Yazaki
authors: Pedro
authors: P
authors: Brugada
mesh_terms: D054537:Atrioventricular Block / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged