Society for Clinical Vascular Surgery

Endovascular interventions for TASC II B and C lesions have similar mid-term patency rates as conventional surgical revascularization

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Donald T. Baril, M.D., Luke K. Marone, M.D., Justine Kim, Michael Go, M.D., Robert Y. Rhee, M.D..
University of Pittsburgh, Pittsburgh, PA, USA.

OBJECTIVES:
To evaluate outcomes of endovascular interventions on femoropopliteal occlusive disease (FPOD) and determine predictors of restenosis of TASC II B and C lesions.
METHODS:
All patients undergoing endovascular interventions for FPOD between May 2003 to July 2007 were reviewed. Data regarding patient demographics, pre and post procedure ankle-brachial indices (ABI) and anatomic factors (including categorization by TASC II classification and runoff vessel status) were reviewed. Outcomes evaluated included freedom from restenoses, freedom from reintervention, overall patency, and assisted-patency.
RESULTS:

237 total limbs were treated during the period reviewed. The study group included 108 TASC B and 32 TASC C limbs in 125 patients (mean age 73.1 ± 10.4 yrs, male sex: 59%). The indication for intervention was claudication (71%) and limb salvage (29%). Mean follow-up length was 10.2 months (range 1-51.6m). 34 limbs experienced restenosis or occlusions at a mean time of 6.7 months (range 1-24). Freedom from restenosis/occlusion was 60.6% at 12 months and 53.9% at 24 months. Predictors of restenosis included a preoperative ABI < 0.5 (RR 2.80, 95% CI = 1.28-6.14, P = 0.01) and hypercholesterolemia (RR 2.40, CI = 1.06-4.74, P =0.04). The overall assisted-patency rate was 94% at 2-years with no significant difference between TASC B and TASC C limbs.

CONCLUSIONS:
Endovascular interventions for TASC II B and C lesions are associated with restenosis/occlusion rates that are at least as good as those of conventional open femoropopliteal bypass surgery. Furthermore, overall assisted-patency rates are excellent, although low preoperative ABIs continue to be associated with worse outcomes.


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