title: Hemodynamic change in pulmonary vein stenosis after radiofrequency ablation: assessment with magnetic resonance angiography.
abstract: We present a case of pulmonary vein (PV) stenosis after radio-frequency (RF) ablation, in which a hemodynamic change in the pulmonary artery was similar to that of congenital PV atresia on time-resolved contrast-enhanced magnetic resonance angiography (TR-MRA). A 48-year-old man underwent RF ablation due to atrial fibrillation. The patient subsequently complained of hemoptysis, dyspnea on exertion, and right chest pain. Right PV stenosis after catheter ablation was diagnosed through chest computed tomography and lung perfusion scan. Pulmonary TR-MRA revealed the pulmonary artery via systemic arterial collaterals and draining systemic collateral veins. On a velocity-encoded cine image, the flow direction of the right pulmonary artery was reversed in the diastolic phase and the left pulmonary artery demonstrated continuous forward flow throughout the cardiac cycle. These hemodynamic changes were similar to those seen in congenital unilateral PV atresia.
authors.affiliation: Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea.
authors.forename: Doyoung
authors.initials: D
authors.lastname: Yun
authors.forename: Jung Im
authors.initials: JI
authors.lastname: Jung
authors.forename: Yong Seog
authors.initials: YS
authors.lastname: Oh
authors.forename: Ho-Joong
authors.initials: HJ
authors.lastname: Youn
mesh_terms: D001281:Atrial Fibrillation / Q000601:surgery*; D001783:Blood Flow Velocity; D017115:Catheter Ablation / Q000009:adverse effects*; D003251:Constriction, Pathologic / Q000209:etiology* / Q000473:pathology; D003287:Contrast Media; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000473:pathology / Q000503:physiopathology; D011652:Pulmonary Circulation; D011667:Pulmonary Veins / Q000473:pathology* / Q000503:physiopathology
chemical_list: D003287:Contrast Media
keywords: Complication; Hemodynamics; Magnetic resonance angiography; Pulmonary vein; Radiofrequency catheter ablation