Wounds are caused by trauma, such as in cases of accidents or attacks, or by surgery and other therapeutic or diagnostic procedures. Wounds may affect not only the injured area but also other body systems. Infection and hemorrhage may complicate wounds, as do dehiscence, disruption of the wound layers, and evisceration, protrusion of internal organs through the lesion.
As a wound heals, fluid and cells drain from the damaged tissue. This drainage, called exudate, may be clear, bloody (sanguinous), or pus-containing (purulent). Tubes may be used to remove exudate from the site of a wound.
Proper wound healing depends on cleanliness and care of the lesion and also on proper circulation, good general health, and good nutrition. Various types of dressings are used to protect wounded areas and promote healing. Vacuum-assisted closure (VAC) uses negative pressure to close the tissues and begin the healing process. Healing may be promoted by débridement, the removal of dead or damaged tissue from a wound. This may be accomplished by cutting or scrubbing away the dead tissue or by means of enzymes. A thick, dark crust or scab (eschar) may be removed in an escharotomy. Deep wounds may require skin
grafting for proper healing. Grafts may be a full-thickness skin graft (FTSG), which consists of the epidermis and dermis, or a split-thickness skin graft (STSG), consisting of the epidermis only. Skin is cut for grafting with a dermatome.
责任编辑：admin
上一篇：医学文章阅读——Fractures
下一篇：医学文章阅读——BURNS
微信公众号搜索“译员”关注我们，每天为您推送翻译理论和技巧，外语学习及翻译招聘信息。