Electroanatomic study of the left atrial insertion of an epicardial accessory pathway integrating the coronary sinus.
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.
Guzzo
Gonzalo
G
Cardiology Service, Hospital Universitario de Getafe, Ctra de Toledo, KM 12,5, 28905 Getafe, Madrid, Spain. guzzogonzalo@yahoo.es
Cosío
Francisco G
FG
Pastor
Agustín
A
Núñez
Ambrosio
A
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*