Modern trends in colorectal surgery.

Area of Science:

• Surgical Infections
• Colorectal Surgery
• Antibiotic Prophylaxis

Background:

• Colorectal surgery traditionally involves mechanical bowel preparation and antibiotics.
• Obligate anaerobic bacteria are significant pathogens in surgical site infections following colorectal procedures.
• Metronidazole is an antibiotic effective against anaerobic bacteria.

Purpose of the Study:

• To evaluate the efficacy of metronidazole as a preoperative antibiotic in colorectal surgery.
• To compare surgical outcomes, including infection rates and mortality, between patients receiving metronidazole and those who did not.

Main Methods:

• A prospective study involving 39 patients receiving standard colorectal surgery preparation supplemented with oral metronidazole (750 mg to 1 g daily for 3 days).
• A control group of 75 patients received standard preparation without metronidazole.
• Comparison of wound discharge cultures, aerobic and anaerobic pathogen prevalence, and surgical mortality rates between groups.

Main Results:

• No surgical fatalities or anaerobic pathogen recovery from wound discharge in the metronidazole group.
• 8% surgical mortality and anaerobic pathogen recovery in 9 cases within the control group.
• Lower proportion of wound suppurations due to aerobic pathogens (41%) in the metronidazole group compared to controls (55%).

Conclusions:

• Metronidazole pretreatment is highly effective in preventing anaerobic infections and reducing surgical mortality in colorectal surgery.
• The findings support the routine use of metronidazole in the preoperative management of colorectal surgery patients.
• Metronidazole is also recommended for other types of septic surgery.