Đóng chân không có sự trợ giúp vết thương (VAC) là một quản lý vết thương kỹ thuật cho thấy nhiều vết thương trên giường để gây áp lực tiêu cực bằng cách của một hệ thống khép kín. Chất lỏng phù được lấy ra từ không gian ngoại mạch, do đó loại trừ một nguyên nhân bên ngoài bối rối microcirculatory và cải thiện nguồn cung cấp máu trong giai đoạn này của viêm. | Perspectives on Modern Orthopaedics New Techniques in Wound Management Vacuum-Assisted Wound Closure Lawrence X. Webb MD Abstract Vacuum-assisted wound closure VAC is a wound management technique that exposes the wound bed to negative pressure by way of a closed system. Edema fluid is removed from the extravascular space thus eliminating an extrinsic cause of microcirculatory embarrassment and improving blood supply during this phase of inflammation. In addition the mechanical tension from the vacuum may directly stimulate cellular proliferation of reparative granulation tissue. Orthopaedic indications for VAC include traumatic wounds after débride-ment infection after débridement and fasciotomy wounds for compartment syndrome. VAC also can be used as a dressing for anchoring an applied splitthickness skin graft. The technique is contraindicated in patients with thin easily bruised or abraded skin those with neoplasm as part of the wound floor and those with allergic reactions to any of the components that contact the skin. Clinical experience with the technique has resulted in a low incidence of minor reversible irritation to surrounding skin and no major complications. Further experience is required as well as clinical and basic research to define optimal indications and benefits compared with traditional methods of wound management. J Am Acad Orthop Surg 2002 10 303-311 Vacuum-assisted wound closure VAC was introduced by Argenta and Morykwas1 based on the effects of pulling on the tissue of a wound cavity by means of suction. VAC exposes the wound bed to mechanically induced negative pressure thereby removing fluid from the extravascular space improving circulation and enhancing the proliferation of reparative granulation tissue. Essentially an evacuation tube is embedded in reticulated polyurethane foam dressing that is placed into the wound. The open-cell nature of the dressing ensures equal distribution of the negative pressure. When the negative pressure is
