No severe pulmonary vein stenosis after extensive encircling pulmonary vein isolation: 12-month follow-up with 3D computed tomography
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Shingo Maeda Yoshito Iesaka Kiyoshi Otomo Kikuya Uno Yasutoshi Nagata Kenji Suzuki Hitoshi Hachiya Masahiko Goya Atsushi Takahashi
- چاپ و سال / کشور: 2010
Description
Few studies have explored the utility of local electrogram-guided extensive encircling pulmonary vein isolation (EEPVI) by analyzing the pulmonary vein (PV) anatomy and occurrence of stenosis using multidetector computed tomography (MDCT). One hundred seventy-six paroxysmal atrial fibrillation (AF) patients underwent EEPVI with a double lasso technique.MDCT was performed in all patients before and at 3, 6 and 12 months after the ablation procedures to screen for PV stenosis. PV stenosis was defined as a[30% reduction in its diameter. A total of 700 PVswere analyzed. PVstenosiswas observed in 15 of 700 PVs (2.1%). All stenoses were mild (mean 34.5 ± 3.3%). They were all asymptomatic, and none required treatment. After 12 months of follow-up, the PV narrowing regressed significantly compared with that at 3 months in the patients with PV stenosis (34.5 ± 3 to 30.4 ± 5%, P\0.05). The remaining PVs exhibited a stable anatomy, and there was no significant progression of the PV narrowing. The results of this study demonstrated that detectable PV stenosis occurred in 2.1% of the PVs, and all stenoses were mild. Moreover, a significant regression of the PV narrowing was observed after 12-months of follow-up. This indicates that the local electrocardiogram-guided EEPVI was relatively safe regarding severe PV stenosis.
Heart Vessels (2011) 26:440–448 DOI 10.1007/s00380-010-0073-5 Received: 7 January 2010 / Accepted: 16 July 2010 / Published online: 4 December 2010
