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Single-dose antibiotic prophylaxis in contaminated abdominal surgery
Abstract:
Although perioperative antibiotic cover reduces the incidence of septic complications associated with abdominal surgery, the optimum duration of antibiotic exposure is open to question. This clinical trial compared the efficacy of a single dose of moxalactam (1 g intravenously) with an extended course of moxalactam (1 g intravenously for eight doses) in 1027 patients undergoing contaminated abdominal surgery. The wound infection rate was 5.4% (28/519) for the single-dose schedule and 6.1% (31/508) for the extended-cover regimen (the respective 95% confidence intervals being 3.6% to 7.7% and 4.2% to 8.6%). Over 80% of all patients undergoing abdominal surgery during the period of study were entered into the trial. There was no significant difference in the incidence of other complications between the two groups under study. It is concluded that a single dose of moxalactam is as effective as a 48-hour course when attempting to prevent infection after contaminated abdominal surgery.
Insights
A single dose of moxalactam is as effective as a 48-hour course for preventing surgical site infections in contaminated abdominal surgery. This finding supports shorter antibiotic durations for patients undergoing these procedures.
Area of Science:
- Infectious Diseases
- Surgical Oncology
- Clinical Pharmacology
Background:
- Perioperative antibiotic prophylaxis is standard for contaminated abdominal surgery.
- The optimal duration of antibiotic therapy remains debated, balancing efficacy against resistance and side effects.
Purpose of the Study:
- To compare the efficacy of a single dose versus an extended course of moxalactam in preventing surgical site infections (SSIs) after contaminated abdominal surgery.
Main Methods:
- A randomized clinical trial involving 1027 patients undergoing contaminated abdominal surgery.
- Patients received either a single intravenous dose of moxalactam or an extended 48-hour course (eight doses).
- Wound infection rates and other complications were compared between the two groups.
Main Results:
- The wound infection rate was 5.4% for the single-dose group and 6.1% for the extended-course group.
- No statistically significant difference was observed in wound infection rates (95% CI) between the single-dose and extended-course regimens.
- There were no significant differences in other postoperative complications between the treatment groups.
Conclusions:
- A single dose of moxalactam is as effective as a 48-hour course in preventing SSIs after contaminated abdominal surgery.
- Shorter antibiotic durations may be sufficient, potentially reducing antibiotic-related adverse events and costs.