Secondary interventions in XXXX with autologous infrainguinal bypass grafts strongly improve patency rates.

@entity1 @entity850
OBJECTIVE: To describe the patency of percutaneous transluminal angioplasty (PTA) of autologous infrainguinal bypasses at risk. METHODS: This was a retrospective single-center cohort study of consecutive @entity1 who underwent primary PTA of an infrainguinal autologous bypass at risk from January 2009 to December 2013. Duplex ultrasound surveillance was performed for at least 1  year after PTA. The primary study end point was the number of secondary interventions. Secondary end points were freedom from recurrent @entity850 or bypass occlusion and the patency of the infrainguinal autologous bypass at 1  year after primary PTA. RESULTS: A total of 69 infrainguinal bypasses at risk in 69 @entity1 were identified and treated with PTA. Technical success was achieved in 91%. The median follow-up was 17  months (range, 1-58  months). During follow-up, 30 bypasses (43%) remained free of significant @entity850 or bypass occlusion, 29 bypasses (42%) developed recurrent @entity850 , and 10 bypasses (14%) occluded. Rates of primary assisted, and secondary patency at 1  year were 84%, and 86%. Five (7%) major amputations were performed, all after bypass occlusion. CONCLUSIONS: Secondary interventions after PTA of a bypass at risk are common. However, repeated secondary interventions of autologous infrainguinal bypasses at risk result in patency rates of more than 80% at 1  year.
