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Composite sequential bypasses to the ankle and beyond for limb salvage
Journal of Vascular Surgery
|March 1, 1984
Summary
Composite grafts combining polytetrafluoroethylene (PTFE) and saphenous vein show excellent patency rates for sequential bypasses. These grafts offer a viable option for limb salvage in patients with critical limb ischemia.
Area of Science:
- Vascular Surgery
- Biomaterials Science
- Regenerative Medicine
Background:
- Critical limb ischemia (CLI) poses a significant challenge, often necessitating complex revascularization procedures.
- Traditional bypass grafts may be limited by conduit availability or distal anastomosis challenges.
- Composite grafts offer a potential solution by combining the properties of synthetic and autologous materials.
Purpose of the Study:
- To evaluate the efficacy and patency of composite sequential bypass grafts using polytetrafluoroethylene (PTFE) and saphenous vein for distal revascularization.
- To assess the impact of these grafts on ankle-brachial index and limb salvage rates.
- To analyze the long-term outcomes of composite sequential bypasses in patients with CLI.
Main Methods:
- Retrospective analysis of 54 patients (35 men, 19 women) undergoing sequential bypass to the ankle and foot using composite PTFE-saphenous vein grafts.
- Preoperative and postoperative ankle pressure index (API) measurements were recorded.
- Graft patency and limb salvage rates were assessed using life-table analysis up to 48 months.
- Graft flow and operative time were compared to traditional bypass grafts.
Main Results:
- The ankle pressure index significantly improved postoperatively (0.77 +/- 0.21) compared to preoperative values (0.31 +/- 0.11).
- Two-year and four-year patency rates were 81.4% and 72.4%, respectively.
- Mean graft flow was 34.8 ml/min, and composite grafts added approximately 51 minutes to operative time.
- Graft failures after 10 weeks frequently resulted in amputation.
Conclusions:
- Composite sequential bypass grafts utilizing PTFE and saphenous vein demonstrate favorable long-term patency rates.
- This technique effectively utilizes limited saphenous vein segments for distal anastomoses in CLI patients.
- Composite sequential bypasses represent a reasonable and effective strategy for limb salvage in selected patients.