Single-dose peroperative antibiotic prophylaxis in gastrointestinal surgery

Area of Science:

• Surgical infection prevention
• Clinical pharmacology
• Microbiology

Background:

• Postoperative wound infections pose a significant risk in gastrointestinal surgery.
• Aerobic and anaerobic bacteria are common pathogens in surgical site infections.

Purpose of the Study:

• To evaluate the efficacy of a single intravenous dose of tobramycin and lincomycin in preventing postoperative wound infections.
• To assess the safety and impact on bacterial flora of this antibiotic regimen.

Main Methods:

• Intravenous administration of tobramycin and lincomycin at the start of gastrointestinal operations.
• Monitoring of postoperative wound infection rates.
• Assessment of bacterial presence (aerobic and anaerobic) in wounds.
• Evaluation for antibiotic toxicity and development of resistant strains.

Main Results:

• A significant reduction in postoperative wound infection incidence from 34% to 5% was observed.
• The treatment effectively reduced the occurrence of both anaerobic and aerobic bacteria.
• Therapeutic antibiotic concentrations were maintained during the operative period in most patients.
• No adverse toxic effects or anesthetic complications were detected.

Conclusions:

• A single preoperative intravenous dose of tobramycin and lincomycin is highly effective in reducing surgical wound infections after gastrointestinal operations.
• The antibiotic regimen is well-tolerated and does not lead to the emergence of resistant bacterial strains.
• This prophylactic strategy offers a safe and beneficial approach to infection control in gastrointestinal surgery.