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Percutaneous aspiration thromboembolectomy
Insights
Percutaneous aspiration thromboembolectomy (PAT) effectively restores blood flow in lower limb arteries, showing a 93% success rate. This technique is superior to traditional methods for smaller vessels below the inguinal ligament.
Area of Science:
- Vascular Surgery
- Interventional Radiology
Background:
- Thromboembolic material in lower limb arteries obstructs blood flow, leading to potential limb ischemia.
- Traditional embolectomy methods may have limitations in smaller distal vessels.
Purpose of the Study:
- To evaluate the efficacy and safety of percutaneous aspiration thromboembolectomy (PAT) as an angioplastic tool.
- To compare PAT with existing methods for thromboemboli removal in lower limb arteries.
Main Methods:
- PAT was performed using a custom-designed catheter/sheath system.
- Procedures involved PAT alone or in combination with balloon dilatation and/or local lytic therapy (streptokinase/urokinase).
- Outcomes were assessed based on restoration of blood flow and clinical improvement.
Main Results:
- PAT achieved a 93% success rate (42 of 45 procedures).
- Significant clinical improvement was observed in most patients.
- Only one below-the-knee amputation occurred, which could not be prevented by the intervention.
- No patient experienced worsening of their condition due to PAT.
Conclusions:
- PAT is a highly effective and safe method for removing thromboemboli from lower limb arteries.
- PAT demonstrates superiority over traditional techniques, such as the Fogarty catheter, in smaller vessels distal to the inguinal ligament.
- The findings are supported by animal studies, reinforcing PAT's efficacy in treating peripheral arterial thromboembolism.
Abstract:
Percutaneous aspiration thromboembolectomy (PAT) was used as an angioplastic tool to remove from arteries of the lower limbs thromboembolitic material originating from any source. PAT was performed with a custom-designed catheter/sheath system, alone or in combination with balloon dilatation and/or local lytic infusion therapy with streptokinase or urokinase. PAT completed the restoration of blood flow, thus improving the results of the preceding angioplastic interventions. Clinical improvement was high, with 93% success (42 of 45 procedures). Only one below-the-knee amputation occurred, and could not be prevented. No patient became worse because of PAT intervention. The Fogarty catheter technique remains the method of choice for removing emboli within the aorto-iliac region, but in the smaller vessels below the inguinal ligament-especially in the distal superficial femoral, popliteal, and tibial regions--in our experience PAT is superior. This has been substantiated also in studies of laboratory animals, using barium-impregnated emboli.