【Yang Yeh】評論

摘錄自Contemporary oral and maxilofacial surgery Ch3 Principle of surgeryInflammation controlEdema occurs after surgery as a result of tissue injury. Edema is an accumulation of fluid in the interstitial space because of fluid transudation from damaged vessels and lymphatic obstruction by fibrin. Two variables help determine the degree of postsurgical edema: (1) The greater the amount of tissue injury, the greater is the amount of edema and (2) the looser the connective tissue that is contained in the injured region, the more edema that occurs. For example, attached gingiva has little loose connective tissue, so it exhibits little tendency toward edema; however, the lips and floor of the mouth contain large amounts of loose connective tissue and can swell significantly.