[Debulking strategy of endovascular treatment for lower extremity artery lesions]
1Department of Vascular Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China.
Insights
Debulking therapy effectively treats lower extremity artery lesions, improving blood flow and limb salvage. Selecting appropriate methods like percutaneous mechanical thrombectomy or excimer laser ablation enhances outcomes.
Area of Science:
- Vascular Surgery
- Interventional Cardiology
- Endovascular Therapy
Background:
- Lower extremity artery lesions pose significant risks, including amputation and mortality.
- Effective revascularization strategies are crucial for managing these complex conditions.
- Debulking techniques offer a method to clear arterial obstructions.
Purpose of the Study:
- To evaluate the feasibility and effectiveness of debulking strategies for lower extremity artery lesions.
- To analyze the outcomes of different debulking methods based on lesion characteristics and location.
Main Methods:
- Retrospective analysis of 101 patients who underwent debulking therapy for 140 lower extremity artery lesions.
- Lesions were located in the iliac, superficial femoral, popliteal, tibiofibular trunk, and below-knee arteries.
- Percutaneous mechanical thrombectomy (PMT), excimer laser ablation (ELA), and directional atherectomy (DA) were employed based on lesion type (acute thrombosis, chronic restenosis, calcified lesions).
Main Results:
- PMT treated 58.6% of lesions, ELA treated 40.0%, and DA treated 1.4%.
- Ankle-brachial index significantly improved post-procedure and was maintained at 12 months.
- At 12 months, primary patency was 86.1%, freedom from major amputation was 93.1%, and mortality was 5.0%.
Conclusions:
- Debulking therapy is a feasible and effective approach for eliminating arterial contents and restoring lumen.
- Tailoring debulking methods to specific lesion characteristics and anatomical locations is key to achieving successful technical outcomes.
- This strategy contributes to improved limb salvage and reduced reintervention rates in patients with lower extremity artery disease.
Abstract:
Objective: To explore the debulking strategy of lower extremity artery lesions. Methods: Retrospectively analyzed the clinical data of 101 patients underwent debulking therapy at Department of Vascular Surgery,Zhongshan Hospital,Fudan University from June 2019 to June 2020.There were 74 males and 27 females,aged (73.2±11.7)years (range:35 to 93 years).There were 31 cases in Rutherford class 3,39 cases in class 4 and 31 cases in class 5. Hypertension occurred in 72 patients. One hundred and forty lesions were treated in 101 patients. Among them, there were 13 lesions(9.3%) in iliac artery,72 lesions(51.4%) in superficial femoral artery,41 (29.3%) lesions in popliteal artery,10 lesions(7.1%) in tibiofibular trunk,and 4 lesions(2.9%) in below the knee artery.Percutaneous mechanical thrombectomy (PMT) was mainly used in acute thrombosis,excimer laser ablation (ELA) was mainly used for chronic in-stent restenosis and chronic stenosis or totally occlusive lesions,while directional atherectomy (DA) was mainly used for short calcified lesions. Results: All of the patients underwent debulking therapy. Eighty-two lesions(58.6%,82/140) were treated by PMT, 56 (40.0%,56/140) were treated by ELA,and 2 (1.4%,2/140) were treated by DA.The ankle-brachial index of the patient was 0.44±0.19 before surgery, 0.87±0.17 immediately after surgery (t=-16.26, P<0.01), and 0.81±0.20 at 6 months after surgery(t=-14.67,P<0.01),and 0.79±0.15 (t=-14.12,P<0.01) at 12 months after surgery. At 12 months,the primary patency was 86.1% (87/101),mortality was 5.0% (5/101), freedom from major-amputation survival rate was 93.1% (94/101),and target lesion reintervention rate was 9.9% (10/101). Conclusions: Debulking is feasible and effective to eliminate the arterial contents and maximize the acquisition of lumen.Selection of suitable debulking methods for different segments and lesions would be helpful to improve the technical success and obtain satisfactory results.
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