title: A long-RP narrow QRS complex tachycardia with alternating cycle length: what is the mechanism?
authors.affiliation: Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology, Hospital Virgen de la Salud, Toledo, Spain. maapalomares@secardiologia.es
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Arias
authors.forename: Alberto
authors.initials: A
authors.lastname: Puchol
authors.forename: Teresa
authors.initials: T
authors.lastname: Colchero
authors.forename: Eduardo
authors.initials: E
authors.lastname: Castellanos
mesh_terms: D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology; D002036:Bundle of His; D002304:Cardiac Pacing, Artificial; D002316:Cardiotonic Agents; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007545:Isoproterenol; D013610:Tachycardia / Q000209:etiology* / Q000503:physiopathology; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000139:chemically induced / Q000503:physiopathology
chemical_list: D002316:Cardiotonic Agents; D007545:Isoproterenol