title: Atrial overdrive pacing inducing QRS complexes of varying duration in a patient with recurrent syncope. 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: Eduardo
authors.initials: E
authors.lastname: Castellanos
authors.forename: Marta
authors.initials: M
authors.lastname: Pachón
authors.forename: Irene
authors.initials: I
authors.lastname: Valverde
authors.forename: Luis
authors.initials: L
authors.lastname: Rodríguez-Padial
mesh_terms: D002037:Bundle-Branch Block / Q000150:complications / Q000503:physiopathology*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D013575:Syncope / Q000209:etiology; D013610:Tachycardia / Q000150:complications / Q000503:physiopathology*