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Original articles   

International Angiology 2008 August;27(4):329-32


lingua: Inglese

Relationship between the diameter of the vein graft and postoperative ankle brachial pressure index following fomoro-popliteal bypass

Matsushita M., Ikezawa T., Banno H.

Department of Vascular Surgery, Aichi Cardiovascular and Respiratory Center, Aichi, Japan


Aim. We studied whether the diameter of the saphenous vein graft affects the result of femoro-popliteal bypass surgery.
Methods. Thirty-eight patients with bypasses from the femoral artery to the above knee popliteal artery were studied. Bypasses without a patent anterior or posterior tibial artery were excluded. The great saphenous vein was used as a bypass graft in 20 extremities and Dacron grafts (6 mm or 8 mm diameter) were used in 18 arteries. The smallest diameter of the saphenous vein was measured preoperatively with ultrasonography. Vein grafts were divided into two groups: small vein graft (≤3 mm) and large vein graft (≥3.5 mm). The ankle brachial pressure index (ABI) was measured at 1 week and 3 months after operation.
Results. The diameter of the vein graft (2.5 to 4 mm, 3.4±0.5 mm) was positively correlated with postoperative ABI (R2 0.607, P<0.0001). The postoperative ABI at 1 week was significantly lower in the small vein graft group (0.72±0.09) than in the large vein graft group (0.95±0.11) and in the Dacron graft group (1.05±0.16). The ABI at 3 months was still significantly lower in small vein graft group (0.78±0.07).
Conclusion. The diameter of the vein graft was positively correlated with postoperative ABI after femoro-popliteal above knee bypass. Postoperative ABI was lower using a vein graft with a diameter of ≤3 mm than that using a bigger vein graft or a Dacron graft.

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