A Comparison of Clinical Outcomes for Diabetic and Nondiabetic Patients Following Directional Atherectomy in the DEFINITIVE LE Claudicant Cohort

Journal of Endovascular Therapy - Tập 22 Số 5 - Trang 701-711 - 2015
Lawrence A. Garcia1, Michael R. Jaff2, Krishna J. Rocha‐Singh3, Thomas Zeller4, Christopher Bosarge5, Suraj Kamat6, James F. McKinsey7
1Sections of Interventional Cardiology and Vascular Medicine, St. Elizabeth’s Medical Center, Tufts University School of Medicine, Boston, MA, USA
2The Institute for Heart, Vascular and Stroke Care, Massachusetts General Hospital, Boston, MA, USA
3The Prairie Heart Institute at St. John’s Hospital, Springfield, IL, USA
4Universitäts-Herzzentrum Freiburg, Bad Krozingen, Germany
5Coastal Vascular and Interventional, Pensacola, FL, USA
6Christus Spohn Hospital Alice, Alice, TX, USA
7Division of Vascular Surgery, New York Presbyterian Hospital, University Hospital of Columbia and Cornell, New York, NY, USA

Tóm tắt

Purpose: To report a subset analysis that evaluated the hypothesis that directional atherectomy for peripheral artery disease in diabetic claudicants has noninferior primary patency at 12 months compared with nondiabetic claudicants. Methods: DEFINITIVE LE, a US/European multicenter study, assessed the effectiveness of directional atherectomy using SilverHawk/TurboHawk systems for treatment of peripheral artery disease in the superficial femoral, popliteal, and infrapopliteal arteries. Of the 800 patients enrolled in the study, only the 598 claudicant patients (mean age 69.5±10.4 years; 336 men) who were classified at baseline as Rutherford category 1–3 were eligible for this subset analysis. Of these, 46.8% (280/598) had diabetes. Follow-up to 12 months included duplex ultrasound examination, functional assessments, and adverse event evaluations. Independent angiographic and duplex ultrasound core laboratories assessed primary patency and secondary endpoints; a clinical events committee adjudicated adverse events. Results: Although diabetics had significantly more baseline comorbidities, 12-month primary patency (77.0%) was no different than for nondiabetics (77.9%; superiority p=0.98; noninferiority p<0.001) across all anatomic territories treated. Freedom from clinically driven target lesion revascularization was no different between diabetics (83.8%) and nondiabetics (87.5%) overall (p=0.19) or by lesion locations. Secondary clinical outcomes (Rutherford category, ankle-brachial index, and walking impairment) improved at 12 months for both diabetics and nondiabetics. Conclusion: Noninferior 12-month patency rates demonstrate that directional atherectomy is an effective treatment in diabetic as well as nondiabetic claudicants. Directional atherectomy remains an attractive treatment option, improving luminal diameters without stents, which preserves future treatment options for both diabetic and nondiabetic patients with progressive, diffuse vascular disease.

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Journal of Endovascular Therapy

Tập 22 Số 5

701-711

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