title: Electroanatomic study of the left atrial insertion of an epicardial accessory pathway integrating the coronary sinus.
abstract: Endocardial electro-anatomic reconstruction of the left atrium and activation mapping defined a very large atrial accessory pathway insertion with a previously failed ablation attempt. Radiofrequency application inside the coronary sinus (CS), at a site with a sharp electrogram bridging atrial and ventricular electrograms abolished pathway conduction. The myocardium in the venous branches of the CS appeared to be responsible for this extraordinary atrial insertion area.
authors.affiliation: Cardiology Service, Hospital Universitario de Getafe, Ctra de Toledo, KM 12,5, 28905 Getafe, Madrid, Spain. guzzogonzalo@yahoo.es
authors.forename: Gonzalo
authors.initials: G
authors.lastname: Guzzo
authors.forename: Francisco G
authors.initials: FG
authors.lastname: Cosío
authors.forename: Agustín
authors.initials: A
authors.lastname: Pastor
authors.forename: Ambrosio
authors.initials: A
authors.lastname: Núñez
mesh_terms: D000015:Abnormalities, Multiple / Q000175:diagnosis*; D001281:Atrial Fibrillation / Q000175:diagnosis*; D018780:Body Surface Potential Mapping / Q000379:methods*; D054326:Coronary Sinus / Q000002:abnormalities*; D005260:Female; D006325:Heart Atria / Q000002:abnormalities*; D006329:Heart Conduction System / Q000002:abnormalities*; D006801:Humans; D008875:Middle Aged; D010496:Pericardium / Q000002:abnormalities*