Abstract 16152: Utility of Peak Systolic Velocity Ratio in Asymptomatic Patients With Restenosis After Endovascular Therapy for Femoro-Popliteal Lesion

Introduction: The predictive factor of whether asymptomatic restenosis needs reintervention after initial therapy remains unclear. Objective: The aim of this study was to evaluate whether peak systolic velocity ratio (PSVR) is effective to predict target lesion revascularization (TLR) after endovascular therapy (EVT) for femoropopliteal (FP) lesion. Methods: From April 2007 to September 2013, 120 restenotic limbs without ischemic symptoms (mean age: 73.1±9.0, men: 75.0%, stent implantation: 57.5%) were selected and analyzed, 73 limbs underwent reintervention. Median follow-up period was 33.7 months (5.1-110.4 months). They were followed by serial duplex ultrasound (DUS). Restenosis was defined as peak systolic velocity (PSV) > 250cm/s or PSVR > 2.4 by using DUS. We divided them into two groups (High PSVR group (PSVR ≧3.63)and low PSVR group (PSVR < 3.63)). The ratio of TLR was compared between two groups by Kaplan-Meier survival curve. We also analyzed the TLR between balloon angioplasty (POBA) alone and ...