Is Infrainguinal Percutaneous Atherectomy Better Suited for Certain Arteries Than Others?

Abstract

Objective: We analyzed our results with percutaneous rotational atherectomy catheters and specifically examined whether they were more likely to be associated with a successful outcome when used to treat smaller diameter vessels such as infrapopliteal (IP) arteries compared to larger diameter femoropopliteal (FP) arteries and infrainguinal arterial autogenous vein grafts (GRAFTS). Material and Methods: Between January 1, 2005, and December 31, 2006, athrectomies were performed on 32 patients for claudication (14), gangrene (9), rest pain (4), and failing GRAFTS (5). Treated vessels included 14 superficial femoral, 1 popliteal, 5 anterior tibial, 4 posterior tibial, and 3 peroneal arteries along with 5 failing GRAFTS. All procedures were performed by vascular surgeons in an endovascular operating suite using a mobile C-arm. Results for larger diameter vessels including FP arteries and GRAFTS were combined (FP + BYPASSES) and compared to results of IP artery lesions. Follow-up averaged 10 weeks (range, 0.5-34 weeks). Results: Length of treated lesions averaged 4.2 cm (range, 1—15 cm) for FP + GRAFT lesions (9 occlusions, 11 stenoses) versus 1.8 cm (1-4 cm) for IP lesions (6 occlusions, 6 stenoses; P = ns). Procedural success rate based on postoperative segmental pressures, pulse volume recordings, and duplex ultrasound was 70% (14/20) for FP + GRAFTS versus 83% (10/12) for IP lesions (P = .03). Need for concomitant adjunctive balloon angioplasty to treat residual stenosis tended to be higher for FP + GRAFT lesions (40% [8/20]) compared to IP lesions (25% [3/12]; P = ns). During follow-up, 25% (5/20) of FP + GRAFTS lesions required reintervention (3 balloon angioplasties, 1 thrombectomy, 1 GRAFT pseudoaneurysm) versus none for the IP lesions (P = .03). Limb salvage rates were 90% (18/20) for FP + GRAFT lesions versus 100% (12/12) for IP lesions during this short follow-up. Conclusions: These preliminary results suggest that short segment IP arterial stenoses and occlusions can be successfully treated with atherectomy catheters with a lower rate of reintervention during short-term follow-up, less need for concomitant adjunctive balloon angioplasty and a lower complication rate compared to FP + graft lesions.

Keywords

atherectomy endovascular arterial

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