Anatomy of the Pulmonary Veins in Patients with Atrial Fibrillation and Effects of Segmental Ostial Ablation Analyzed by Computed Tomography

• DOI: 10.1046/j.1540-8167.2003.02444.x
• Publication Date: 2010-08-16T09:42:03Z
• Authors: CHRISTOPH SCHARF; MICHAEL SNEIDER; IAN CASE; AMAN CHUGH; STEVE W.K. LAI; FRANK PELOSI; BRADLEY P. KNIGHT; ELLA KAZEROONI; FRED MORADY; HAKAN ORAL
• Keywords: Ostium; Pulmonary vein stenosis

Pulmonary Vein Anatomy. Introduction: The anatomic arrangement of pulmonary veins (PVs) is variable. No prior studies have quantitatively analyzed the effects segmental ostial ablation on PVs. aim this study was to determine effect radiofrequency PV anatomy in patients with atrial fibrillation (AF). Methods and Results: Three‐dimensional models PVs were constructed from computed tomographic (CT) scans 58 AF undergoing isolate 10 control subjects without a history AF. CT repeated approximately 4 months later. left dimensions measured digital calipers. Four separate ostia present 47 subjects; 3 2 5 9 subjects. superior had larger ostium than inferior Patients area between diameters controls. Segmental resulted 1.5 ± 3.2 mm narrowing diameter. A 28% 61% focal stenosis 7.6 2.2 3% 128 isolated There no instances symptomatic during mean follow‐up 245 105 days . Conclusion: allows identification variants catheter procedures. results significant but small reduction Focal occurs infrequently attributable delivery energy within PV. (J Cardiovasc Electrophysiol, Vol. 14, pp. 150‐155, February 2003)