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Prophylactic antibiotics are not indicated in clean general surgery cases
R Knight1, P Charbonneau, E Ratzer
1Department of Surgery Education, Exempla Saint Joseph Hospital, 1835 Franklin St., Denver, CO 80218-1191, USA.
American Journal of Surgery
|February 13, 2002
Summary
Prophylactic antibiotics did not significantly reduce surgical site infections in clean general surgery cases, even when stratified by the National Nosocomial Infection Surveillance (NNIS) system risk classification. Further research is needed to establish antibiotic guidelines for NNIS classes.
Area of Science:
- Surgical Infection Prevention
- Nosocomial Infections
- Antibiotic Prophylaxis
Background:
- The National Nosocomial Infection Surveillance (NNIS) system is now standard for assigning infection risk, replacing older methods.
- NNIS classification considers procedure length, wound cleanliness, and patient's ASA status.
- Currently, no established prophylactic antibiotic guidelines exist for the NNIS system.
Purpose of the Study:
- To evaluate the efficacy of prophylactic antibiotics in preventing surgical site infections within different NNIS risk classifications.
- To determine if prophylactic antibiotics impact infection rates in clean general surgery.
Main Methods:
- Retrospective review of 1,023 clean general surgery cases.
- Stratification of cases based on the NNIS system (classes 0, 1, and 2).
- Analysis of infection rates with and without prophylactic antibiotic use.
Main Results:
- A total of 16 (1%) surgical site infections were observed.
- Infection rates without antibiotics: NNIS class 0 (1.21%), class 1 (3.03%), class 2 (0%).
- Infection rates with antibiotics: NNIS class 0 (0.94%), class 1 (2.44%), class 2 (6.67%).
Conclusions:
- Prophylactic antibiotic use did not yield a statistically significant reduction in surgical site infection rates.
- This finding holds true across all NNIS classifications for clean general surgery.
- The study suggests current prophylactic antibiotic strategies may not be effective for NNIS-classified clean general surgery cases.