The most important factors in controlling postsurgical sepsis are appropriate surgical judgment and technique. Efficacious prophylactic antibiotics, when indicated, also significantly reduce the postoperative infection rate. Among the other techniques often heralded as important adjunctive measures, only duration of preoperative hospitalization, preoperative bathing, use of electrocautery, preoperative hair removal, use of prophylactic drains, and duration of operation are of proven significance.

Prophylatic use of antimicrobics represents about 30% of total hospital use of these agents. Previous studies in animal models have suggested that timing of such prophylaxis is crucial, to the extent of the existence of a “critical period” for effective administration. This phenomenon has further been shown to exist in man, in numerous double-blind, controlled clinical trials in various types of surgical wounds. On these bases, we introduced new prophylactic protocols in a university hospital, specifically directed at reducing infection in high-risk procedures. Surveillance was conducted by infection control nurses, and one antibiotic-day was the comparative unit. Infection rates were markedly diminished under these new protocols. Total usage of antimicrobial drugs also decreased by 38% over previous rates. The rationale for limiting prophylaxis to a conscribed period was clearly demonstrated, although the exact mechanisms responsible for this effect are, as yet, unclear.

Surgical wound infections offer a major challenge to hospital infection control programs. Surgical procedures and host factors are independent variables which markedly influence the risk of infection. Frequently used categories of surgical procedures (clean, contaminated, and infected) are inadequate to identify the special risks and problems of individual procedures.

In 1976, in conjunction with the practicing surgeons of a large, referral hospital, the Infections Control Committee instituted surveillance of selected clean surgical procedures and deep-versus-superficial wound infections. Major problems associated with the cleaning of sternal saws and the timing of the administration of prophylactic antibiotics have been detected by these methods. Conventional surveillance undoubtedly would have overlooked these problems. Effective surveillance and control of surgical wound infections requires a willingness to modify surveillance activities to meet the local needs, and a determination to include the operating surgeons in the planning of surveillance activities.

Surgical wounds can become infected by a variety of organisms, leading to a variety of clinical courses. In this article, several types of infections, therapies, prognoses and prophylaxes.are discussed. Skin and subcutaneous tissues infect with a range of gram-positive and gram-negative aerobic and anerobic bacteria. Gangrenous infections, whether necrotizing fasciitis or bacterial synergistic gangrene, can be devastating or fatal. Gangrenous infection in the muscle is also discussed, and various treatments outlined. The intention is to familiarize readers with the predisposing conditions, clinical manifestations and therapeutic alternatives for these surgical infections.