title: Mid-term results with laser atherectomy in the treatment of infrainguinal occlusive disease.
abstract: BACKGROUND
  Laser atherectomy offers a potential intervention for multivessel infrainguinal disease in patients with poor revascularization options. Despite promising early results reported in the literature, the proper patient population who might benefit from laser atherectomy has yet to be determined.
  
  
  METHODS
  From July 2004 to June 2006, patients undergoing laser atherectomy were retrospectively reviewed and assessed for comorbidities, operative and follow-up variables potentially associated with the end points of nondefinitive therapy, and limb salvage.
  
  
  RESULTS
  During the study period, 40 patients (21 women, 19 men) underwent laser atherectomy, and the average follow-up was 461 +/- 49 days (range, 17 to 1050 days). Their average age was 68 +/- 2 years (range, 43 to 93 years). The indication for laser atherectomy was critical limb ischemia in 26 (65%) and lower limb claudication in 11 (35%). A total of 47 lesions were treated in the following arterial segments: 34 femoropopliteal and 13 infrapopliteal. Femoropopliteal distribution by the Trans-Atlantic Society Classification (TASC) was A in 3, B in 17, C in 10, D in 4, and infrapopliteal lesions distribution was A in 1, B in 3, C in 4, and D in 5. Adjunctive angioplasty was used in 75% of cases. The overall technical success rate (<50% residual stenosis) was 88%. Laser atherectomy-based treatment was the definitive therapy for 23 patients (58%), and the overall 12-month primary patency was 44%. The limb salvage rate at 12 months in 26 patients with critical limb ischemia was 55%. Renal failure was a risk factor for amputation (P < .001) and failed primary patency (P < .05), type 2 diabetes mellitus was a risk factor for amputation (P < .05), and poor tibial runoff was associated with failed primary patency and amputation (P < .05). Outcome was associated with the number of patent infrapopliteal runoff vessels.
  
  
  CONCLUSIONS
  These data demonstrate that laser atherectomy can be used with high initial technical success rate. Chronic renal failure and diabetes are risk factors for a negative outcome. Poor results in patients with diabetes and renal failure necessitate careful case selection in this subgroup, in which laser atherectomy is less likely to provide a definitive revascularization result or limb salvage.
authors.affiliation: Section of Vascular and Endovascular Surgery, East Carolina University, Greenville, NC 27834, USA. stonerm@ecu.edu
authors.forename: Michael C
authors.initials: MC
authors.lastname: Stoner
authors.forename: Dorian J
authors.initials: DJ
authors.lastname: deFreitas
authors.forename: Sachin V
authors.initials: SV
authors.lastname: Phade
authors.forename: Frank M
authors.initials: FM
authors.lastname: Parker
authors.forename: William M
authors.initials: WM
authors.lastname: Bogey
authors.forename: Steve
authors.initials: S
authors.lastname: Powell
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000671:Amputation, Surgical; D017222:Angioplasty, Balloon, Laser-Assisted / Q000009:adverse effects; D001157:Arterial Occlusive Diseases / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D017073:Atherectomy / Q000009:adverse effects; D019992:Databases as Topic; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007383:Intermittent Claudication / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D007511:Ischemia / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D053208:Kaplan-Meier Estimate; D023821:Limb Salvage; D035002:Lower Extremity / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D018579:Patient Selection; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome; D014654:Vascular Patency