Table V: Classification of surgical wounds Wound class Definition Example of Wound Usual typical infection organism procedures rate(%) Clean Nontraumatic, Wide local 2 S. aureus elective surgery; excision of no entry of GI, breast mass biliary, tracheobronchial, respiratory, or GU tracts Respiratory, Gastroctomy, <10 Related to genitourinary, GI hysterectomy the viscus tract entered but entered minimal contamination Contaminated Open, fresh, Ruptured 20 Depends on traumatic appendix; underlying wounds; resection of disease uncontrolled unprepared spillage from an bowel unprepared hollow viscus; minor break in sterile technique Dirty Open, traumatic, Intestinal 28-70 Depends on dirty wounds; fistula underlying traumatic resection disease perforated viscus; pus in the operative field
Table V: Classification of surgical wounds Usual organism Wound infection rate(%) Example of typical procedures Definition Wound class S. aureus 2 Wide local excision of breast mass Nontraumatic, elective surgery; no entry of GI, biliary, tracheobronchial, respiratory, or GU tracts Clean Related to the viscus entered <10 Gastroctomy, hysterectomy Respiratory, genitourinary, GI tract entered but minimal contamination Depends on underlying disease 20 Ruptured appendix; resection of unprepared bowel Open, fresh, traumatic wounds; uncontrolled spillage from an unprepared hollow viscus; minor break in sterile technique Contaminated Depends on underlying disease 28-70 Intestinal fistula resection Open, traumatic, dirty wounds; traumatic perforated viscus; pus in the operative field Dirty
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