title: Change in QRS Morphology during Extrasystole Ablation: What is the Mechanism?
authors: Arrhythmia Unit, Department of Cardiology, Hospital Universitario Virgen del Rocío, Seville, Spain.
authors: Eduardo
authors: E
authors: Arana-Rueda
authors: Arrhythmia Unit, Department of Cardiology, Hospital Universitario Virgen del Rocío, Seville, Spain.
authors: Alvaro
authors: A
authors: Arce-León
authors: Arrhythmia Unit, Department of Cardiology, Hospital Universitario Virgen del Rocío, Seville, Spain.
authors: Lorena
authors: L
authors: García-Riesco
authors: Arrhythmia Unit, Department of Cardiology, Hospital Universitario Virgen del Rocío, Seville, Spain.
authors: Alonso
authors: A
authors: Pedrote
mesh_terms: D005117:Cardiac Complexes, Premature / Q000503:physiopathology* / Q000601:surgery*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged
keywords: ablation; electrophysiology - clinical; mapping; ventricular tachycardia