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Comparative study of venous arterialization and pedal bypass in a patient cohort with critical limb ischemia
Michiel A Schreve1, Robert C Minnee1, Jan Bosma1
1Department of Vascular Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands.
Insights
Distal venous arterialization and pedal bypass surgery show similar limb salvage rates for critical limb ischemia (CLI) patients. Bypass occlusion is the main risk factor for amputation, highlighting the need for effective graft monitoring.
Area of Science:
- Vascular Surgery
- Reconstructive Surgery
- Clinical Outcomes Research
Background:
- Critical limb ischemia (CLI) significantly impacts patient life expectancy and independence.
- Revascularization is crucial for limb salvage in CLI patients.
- Identifying risk factors for graft failure and amputation is vital.
Purpose of the Study:
- To compare the clinical outcomes of distal venous arterialization versus pedal bypass surgery in CLI patients.
- To identify risk factors associated with graft occlusion and amputation in CLI treatment.
Main Methods:
- Retrospective cohort study of 40 CLI patients treated between 2007 and 2012.
- Comparison of venous arterialization (n=21) and pedal bypass (n=19) outcomes.
- Kaplan-Meier and Cox regression analyses for limb salvage and patency predictors.
Main Results:
- Venous arterialization: 15% early occlusion, 71% 1-year patency, 53% limb salvage.
- Pedal bypass: 23% early occlusion, 75% 1-year patency, 47% limb salvage.
- Bypass occlusion was the sole independent risk factor for limb salvage (P<0.001).
Conclusions:
- Distal venous arterialization offers comparable limb salvage rates to pedal bypass surgery in CLI patients.
- Graft occlusion is a critical determinant of limb salvage success.
- Further research may refine patient selection and risk factor management for CLI revascularization.
Objectives:
Patients with critical limb ischemia (CLI) have a poor life expectancy, and aggressive revascularization is accepted as a means to maintain their independence in the end stage of life. The goal of this case-control study was to evaluate the clinical outcome of distal venous arterialization and compare this with pedal bypass surgery in patients with CLI, and to identify potential risk factors that could be used to effectively identify patients at high risk of graft occlusion and amputation.
Methods:
A retrospective cohort of patients was treated for CLI using venous arterialization or pedal bypass between 2007 and 2012. Kaplan-Meier and Cox regression analyses were used to evaluate predictors for limb salvage and patency.
Results:
In 40 patients with CLI, 21 venous arterializations and 19 pedal bypasses were performed. In the venous arterialization group, early occlusion was 15%, 1-year patency was 71%, and limb salvage was 53%. In the PB group, early occlusion was 23%, one-year patency was 75% and limb salvage was 47%. The only independent risk factor for limb salvage in multivariate analysis was bypass occlusion (P<0.001).
Conclusions:
Limb salvage after venous arterialization was equal to limb salvage after pedal bypass surgery in this clinical comparative study.
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