Transcatheter angioplasty for acquired XXXX after radiofrequency ablation.

@entity1 @entity849 @entity256 @entity955
BACKGROUND: @entity849 has recently been recognized as a complication of radiofrequency ablation for @entity955 . This study evaluates the presentation of affected @entity1 and the role of transcatheter therapy for this @entity1 population. METHODS AND RESULTS: This study used a retrospective review of data from 19 @entity1 (age, 51+/-13 years) with @entity849 who underwent catheterization and angiography between December 2000 and December 2002. Quantitative perfusion and spiral CT scans were performed for initial diagnosis and follow-up. The median duration between radiofrequency ablation and the reported onset of respiratory symptoms for 18 of 19 @entity1 was 7.5 weeks (0.1 to 48). After the onset of symptoms, all but two @entity1 were initially misdiagnosed with a symptoms-to-diagnosis duration of 16 weeks (2-59). At initial catheterization, 17 of 19 @entity1 had angioplasty in 30 veins with stent placement in 5 vessels when a flap occurred. Overall vessel diameter increased from 2.6+/-1.6 to 6.6+/-2.4 mm (P<0.0001). There were 4 procedure-related adverse events but no long-term sequelae. Immediate follow-up showed improved flow to involved lung segments. At a median follow-up of 43 weeks (2-92), although repeat angioplasty for @entity256 was necessary in 8 of 17 @entity1 , 15 of 17 @entity1 currently have no or minimal persistent symptoms. CONCLUSIONS: @entity849 after radiofrequency ablation for @entity955 is often misdiagnosed. Although further follow-up is necessary to determine long-term success, our data indicate better pulmonary vein flow and symptomatic improvement in the majority of @entity1 undergoing dilation of postablation @entity849 .
