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Thrombolysis in the treatment of peripheral arterial vascular occlusions
Insights
Thrombolytic therapy for peripheral arterial disease has a 59% success rate but carries a 28% complication risk. Successful treatment of graft occlusions requires addressing underlying lesions for sustained limb salvage.
Area of Science:
- Vascular Surgery
- Interventional Cardiology
- Pharmacology
Background:
- Peripheral arterial disease (PAD) management, particularly limb-threatening occlusions, presents clinical challenges.
- The role of thrombolytic agents in PAD, especially for graft and native vessel occlusions, requires further clarification.
Purpose of the Study:
- To evaluate the efficacy and safety of thrombolytic therapy in patients with limb-threatening peripheral arterial occlusions.
- To compare outcomes between graft occlusions and native vessel occlusions treated with thrombolysis.
Main Methods:
- Retrospective review of 64 consecutive episodes of limb-threatening graft or native vessel occlusions treated with thrombolytic agents.
- Analysis of overall success rates, major complication/mortality rates, and long-term patency.
- Assessment of outcomes based on the presence and correction of causative lesions.
Main Results:
- Overall success rate was 59%, with a major complication/mortality rate of 28%.
- Graft occlusions required adjunctive procedures (angioplasty/surgery) for sustained patency (64%).
- Native vessel occlusions showed approximately 70% patency, irrespective of lesion correction; 38% of failed cases led to amputation, but 64% salvage was achieved in reconstructable cases.
Conclusions:
- Thrombolytic therapy is a useful adjunct for peripheral vascular occlusions but carries significant risks.
- Successful thrombolysis of graft occlusions necessitates correction of precipitating lesions for limb salvage.
- Careful management of patients with failed thrombolysis can still lead to significant limb salvage.
Abstract:
The efficacy of thrombolytic agents in the management of peripheral arterial disease remains unclear. We reviewed our experience with 64 consecutive episodes of limb-threatening graft or native vessel occlusions. The overall success rate was 59%, with a major complication/mortality rate of 28%. Thrombolytic therapy in patients with occluded vascular grafts required identification of a causative lesion and subsequent adjunctive management with percutaneous transluminal angioplasty or surgery for sustained patency (64%). In contrast, approximately 70% of native vessel occlusions maintained patency whether a causative lesion was identified and corrected or not. Patients who failed thrombolytic therapy had a worse prognosis overall, with 38% undergoing primary amputation, although patients with reconstructable occlusions still had a 64% salvage rate at six months. The review demonstrated that thrombolytic therapy continues to be a useful adjunct in treating the patient with peripheral vascular occlusion, although a significant risk of major complications persists. Patients with graft occlusions successfully treated with thrombolysis require correction of any precipitating lesions for long-term limb salvage, while careful management of patients failing thrombolysis can still achieve significant limb salvage in selected cases.