title: P-wave pseudonormalization after iatrogenic coronary sinus isolation.
abstract: We report a case of a 58 year old gentleman with prior history of catheter ablation for persistent atrial fibrillation (AF). His baseline ECG showed sinus rhythm with a broad and notched P-wave in lead II and biphasic P-wave (positive/negative) in leads III and aVF previously described as advanced interatrial block. A redo ablation procedure was performed due to AF recurrence. An iatrogenic isolation of the coronary sinus (CS) was observed during ablation with marked narrowing and loss of the terminal negative component of the P-wave on the surface ECG.
authors.affiliation: Division of Cardiology, Department of Medicine, Kingston General Hospital, Queen's University, Kingston ON, Canada.
authors.forename: Fariha
authors.initials: F
authors.lastname: Sadiq Ali
authors.affiliation: Division of Cardiology, Department of Medicine, Kingston General Hospital, Queen's University, Kingston ON, Canada.
authors.forename: Andres
authors.initials: A
authors.lastname: Enriquez
authors.affiliation: Division of Cardiology, Department of Medicine, Kingston General Hospital, Queen's University, Kingston ON, Canada.
authors.forename: Damian
authors.initials: D
authors.lastname: Redfearn
authors.affiliation: Division of Cardiology, Department of Medicine, Kingston General Hospital, Queen's University, Kingston ON, Canada. Electronic address: barancha@kgh.kari.net.
authors.forename: Adrian
authors.initials: A
authors.lastname: Baranchuk
mesh_terms: D001281:Atrial Fibrillation / Q000150:complications / Q000601:surgery*; D017115:Catheter Ablation / Q000009:adverse effects*; D054326:Coronary Sinus / Q000601:surgery*; D004562:Electrocardiography / Q000379:methods*; D006329:Heart Conduction System; D006801:Humans; D007049:Iatrogenic Disease; D008297:Male; D008875:Middle Aged; D012848:Sinoatrial Block / Q000175:diagnosis* / Q000209:etiology*; D016896:Treatment Outcome
keywords: ECG; Interatrial block; Left atrial ablation