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Endoscopic vessel harvesting (EVH) is a surgical technique that may be used in conjunction with coronary artery bypass surgery (commonly called a "bypass"). For patients with coronary artery disease, a physician may recommend a bypass to reroute blood around blocked arteries to restore and improve blood flow and oxygen to the heart. To create the bypass graft, a surgeon will remove or "harvest" healthy blood vessels from another part of the body, often from the patient's leg or arm. This vessel becomes a graft, with one end attaching to a blood source above and the other end below the blocked area, creating a "conduit" channel or new blood flow connection across the heart. The success of coronary artery bypass graft surgery (CABG) may be influenced by the quality of the conduit and how it is handled or treated during the vessel harvest and preparation steps prior to grafting. Success can be measured in terms of: * The need for repeat revascularization to treat a new blockage * Morbidity * Mortality (death) ==Method== Coronary artery bypass graft surgery has been in practice since the 1960s. Historically, vessels—such as the great saphenous vein in the leg or the radial artery in the arm—were obtained using a traditional "open" procedure that required a single, long incision from groin to ankle, or a "bridging" technique that used three or four smaller incisions. The most minimally invasive technique is known as endoscopic vessel harvesting (EVH), a procedure that requires a single 2 cm incision plus one or two smaller incisions of 2–3 mm in length. Each method involves carefully cutting and sealing off smaller blood vessels that branch off the main vessel conduit prior to removal from the body. This practice does not harm the remaining blood vessel network, which heals and maintains sufficient blood flow to the extremities, allowing the patient to return to normal function without noticeable effects. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Endoscopic vessel harvesting」の詳細全文を読む スポンサード リンク
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