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  • Title: In situ versus reversed saphenous vein for femoropopliteal bypass: a prospective randomized study of 100 cases.
    Author: Watelet J, Cheysson E, Poels D, Menard JF, Papion H, Saour N, Testart J.
    Journal: Ann Vasc Surg; 1987 May; 1(4):441-52. PubMed ID: 3504357.
    Abstract:
    With the purpose of comparing results using the greater saphenous vein in situ or as a reversed conduit, 100 femoropopliteal bypasses, performed in 91 patients between October 1980 and January 1985, were randomized into two statistically comparable groups of 50 procedures of each type. Seventy-five percent of patients had cutaneous signs of ischemia and 20% had isolated rest pain. Average follow-up was 32 months for the in situ group and 33.4 months in the reversed bypass group. The quality of the vein was statistically better in the in situ group (p less than 0.01). There were six cases of early thrombosis in the in situ group compared to four in the reversed bypass group. In the in situ group, half of the thromboses could be attributed to inadequate valvular destruction. Seven delayed thromboses were noted in the in situ group whereas there were two in the reversed saphenous vein bypass group. The actuarial rates of bypass patency at three years in the reversed and in situ groups were 88.2 and 70.8%, respectively (chi 2 = 2.62; NS). Analysis of results suggests that: 1) the reversed saphenous vein bypass provides excellent results if vein harvest and preparation are as atraumatic as possible; 2) expertise in rendering the valves incompetent markedly increases patency in the in situ technique; 3) during the first 12 months, Doppler follow-up of measured distal pressures is necessary in order to detect pathologic changes of the bypass and adjacent arterial tree.
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