Related Experiment Videos
Multiple sequential femoral tibial grafting for severe ischemia
Insights
Multiple sequential anastomoses of a single vein graft to distal branches significantly improve graft flow and limb salvage rates in patients with critical limb ischemia. This technique enhances perfusion to the ischemic foot, leading to better surgical outcomes.
Area of Science:
- Vascular Surgery
- Reconstructive Surgery
- Ischemia Management
Background:
- Autogenous vein bypass grafting to distal popliteal or tibial-peroneal arteries is a common procedure for limb salvage.
- Existing methods report low limb salvage rates and variable long-term graft function.
- Increased graft flow and decreased resistance are crucial for effective foot perfusion in ischemic limbs.
Purpose of the Study:
- To evaluate the efficacy of multiple sequential anastomoses of a single vein graft to distal branches in improving outcomes for patients with critical limb ischemia.
- To enhance graft flow and reduce resistance in femoropopliteal-tibial bypass procedures.
- To improve perfusion to the ischemic foot through a novel surgical technique.
Main Methods:
- Employed multiple sequential anastomoses of a single autogenous vein graft to distal tibial or peroneal branches in seven patients.
- Utilized autogenous vein grafts alone or in combination with bovine heterografts.
- Performed anastomoses to a blind popliteal segment, single tibial/peroneal, both tibials, or both tibials and the peroneal artery.
Main Results:
- Operating table measurements showed a significant increase in graft flow with each additional anastomosis.
- Patients demonstrated improved surgical response, including return of pulses, foot warmth, and accelerated healing compared to single anastomosis.
- One acute graft failure due to technical issues, one late failure in a patient with cancer, and one perioperative myocardial infarction were noted.
Conclusions:
- Multiple sequential anastomoses represent a promising technique to enhance graft flow and improve limb salvage in critical limb ischemia.
- This method offers a potential solution to the limitations of traditional single-anastomosis bypass grafts.
- Further investigation is warranted to optimize this technique and its application in vascular reconstruction.
Abstract:
For the past decade a common procedure used to salvage severely ischemic limbs has been autogenous vein bypass grafting to the distal popliteal artery or, if the popliteal trifurcation is occluded, to one of the tibial-peroneal branches. Reported limb salvage rate and long-term graft function varies considerably but in most series is low. To increase graft flow and to decrease resistance in femoral-poplitical-tibial grafts and thereby to perfuse the ischemic foot more effectively, we have employed multiple sequential anastomoses of a single vein graft to distal branches--a technique similar to that used occasionally in aortocoronary bypass grafting. The autogenous vein graft alone, or in combination with bovine heterograft, has been used in six patients with gangrenous toes or far advanced ischemia and in one patient with severe claudication. Multiple anastomoses below the knee were carried out in each patient. Anastomosis has been to a blind popliteal segment, then to a tibial or peroneal in four patients, to both tibials in another two patients, and to both tibials and the peroneal in one patient. Flow rates measured on the operating table clearly demonstrated a significant increase in flow through the graft with each additional anastomosis. There has been a greater response to surgery with return of pulses, warmth of the foot, and rapid healing as compared with previous patients having single femoral-tibial anastomoses. One failure occurred acutely from a technical problem early in the series; one failed at 3 months in a patient with pancreatic cancer and another patient died 2 weeks after operation of a myocardial infarct.