title: [Congenital atrioventricular junction tachycardia. Favorable response to anti-arrhythmia agents].
abstract: The congenital junctional ectopic tachycardia, is an unusual tachyarrhythmia, with early clinic manifestation and poor antiarrhythmic drugs response with a great infant mortality reaching rates of 35%. It deserves a special attention in its timely detection as well as in its appropriate handling with different modalities of pharmacological and nonpharmacological therapy. We reported two cases in which age of presentation of tachyarrhythmia was at three months and whose particularity was the good response to antiarrhythmic drugs; verapamil and later propafenone, used for the acute stages and a combination of propafenone plus propranolol initially for the chronic stage. Due to intolerance it was necessary to change the treatment after a year for sotalol and digital with good response. We review the literature about this topic.
authors.affiliation: Departamento de Electrocardiografía y Electrofisiología, Instituto Nacional de Cardiología Ignacio Chávez INCICH, México D.F.
authors.forename: F J
authors.initials: FJ
authors.lastname: González
authors.forename: P
authors.initials: P
authors.lastname: Iturralde
authors.forename: J
authors.initials: J
authors.lastname: Calderón
authors.forename: S
authors.initials: S
authors.lastname: González
authors.forename: M
authors.initials: M
authors.lastname: Guevara
authors.forename: L
authors.initials: L
authors.lastname: Colin
authors.forename: J A
authors.initials: JA
authors.lastname: González-Hermosillo
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use*; D002648:Child; D004359:Drug Therapy, Combination; D004562:Electrocardiography; D006801:Humans; D007223:Infant; D008297:Male; D011405:Propafenone / Q000008:administration & dosage / Q000627:therapeutic use; D011433:Propranolol / Q000008:administration & dosage / Q000627:therapeutic use; D013613:Tachycardia, Ectopic Junctional / Q000151:congenital* / Q000175:diagnosis / Q000188:drug therapy; D014700:Verapamil / Q000627:therapeutic use
chemical_list: D000889:Anti-Arrhythmia Agents; D011405:Propafenone; D011433:Propranolol; D014700:Verapamil
vernacular_title: Taquicardia congénita de la unión A-V. respuesta favorable a los antiarrítmicos.