Single dose metronidazole prophylaxis in gynaecological surgery

Area of Science:

• Obstetrics and Gynecology
• Surgical Infectious Diseases
• Pharmacology

Background:

• Postoperative infections and pyrexia are significant complications following major gynecological surgery.
• Bacteroides species are common pathogens in pelvic and wound infections.
• Prophylactic antibiotics aim to reduce the incidence of these adverse events.

Purpose of the Study:

• To evaluate the prophylactic efficacy of metronidazole rectal suppositories in preventing postoperative complications.
• To assess the impact of metronidazole on postoperative pyrexia and infection rates.
• To determine the role of metronidazole in reducing specific bacterial infections, such as those caused by Bacteroides.

Main Methods:

• A double-blind, placebo-controlled study involving 200 patients undergoing major gynecological surgery.
• Administration of 2g metronidazole rectal suppositories versus placebo prior to surgery.
• Monitoring and assessment of postoperative pyrexia using a fever index.
• Quantification and comparison of major postoperative wound and pelvic infection rates between groups.

Main Results:

• Patients receiving metronidazole prophylaxis showed a significant reduction in postoperative pyrexia.
• A dramatic decrease in major postoperative wound and pelvic infections was observed, from 18% in the placebo group to 1% in the metronidazole group.
• All four cases of proven Bacteroides infections occurred in the placebo group, indicating metronidazole's effectiveness against these pathogens.

Conclusions:

• Metronidazole rectal suppositories are effective in reducing postoperative pyrexia and major infections after major gynecological surgery.
• Prophylactic metronidazole significantly lowers the incidence of wound and pelvic infections, including those caused by Bacteroides.
• This prophylactic regimen offers a valuable strategy for improving patient outcomes in gynecological surgery.