“…Therefore, the use of autogenous vein is also strongly favored for bypasses to the popliteal artery below the knee. Femoral tibial bypass grafting with autogenous vein should rarely be necessary for the treatment of intermittent claudication because of the increased risk of amputation associated with failure of In the 8 short-term trials of parenteral administration of PGE-1 or prostacyclin in patients with CLI, the results have been inconsistent and for the most part have not demonstrated efficacy, as defined by amelioration of pain or healing of ulcers (16,(121)(122)(123)(124)(125)(126)(127). In addition, there have been at least 11 randomized, placebo-controlled trials of intravenous PGE-1 or iloprost (16).…”