Management of acute limb ischemia (ALI) due to occlusions in popliteal and infrapopliteal arteries remains a challenge. Open surgical methods and even the novel percutaneous mechanical thrombectomy devices have not shown satisfactory results in these small arteries. The aim of this prospective study was to assess the safety and efficacy of catheter-directed thrombolysis (CDT) in this type of ALI with distal occlusion. Between April 2017 and June 2019, 22 patients with ALI secondary to popliteal or infrapopliteal occlusion were enrolled in the study. Patients with thrombosis, embolism, and thrombosed bypass graft were included; all belong to category I or IIa of Rutherford's classification. Technical success, limb salvage, complications, and mortality were evaluated at short- and long-term follow-up. Technical success was achieved in 81.8%, while 36.4% of patients needed additional balloon angioplasty, major amputation in 13.6%, minor bleeding in 18.2%, and no major hemorrhage. Limb salvage at 30 days and 1 year was 86.4% and 72.7%, respectively. At 1 year, primary patency was 63.6% and mortality was 9.1%. Catheter directed thrombolysis is a safe and highly effective treatment modality for popliteal or infrapopliteal acute limb ischemia unless contraindicated.
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Article Synopsis
- The study investigates the vascular response after balloon angioplasty treatment for infrapopliteal artery stenosis, noting a trend of worsening conditions post-procedure.
- Thirteen patients were analyzed through optical frequency domain imaging (OFDI) at three different time points to measure changes in artery dimensions and plaque burden.
- Results showed that while lumen area initially increased after angioplasty, it decreased significantly at follow-up, with plaque area also showing an initial decrease but increasing again, particularly notable in patients with mild to moderate plaque burden.
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