Is mechanical bowel preparation really necessary in colorectal surgery?

Area of Science:

• Colorectal surgery outcomes
• Surgical technique optimization
• Gastrointestinal surgery research

Background:

• Mechanical bowel preparation (MBP) is a common practice before colorectal surgery.
• Its necessity and impact on surgical outcomes remain debated.
• Alternative approaches are being explored to improve patient recovery and reduce complications.

Purpose of the Study:

• To evaluate the safety and efficacy of colorectal surgery performed without mechanical bowel preparation.
• To determine the incidence of anastomotic failure and surgical site infections in this patient cohort.
• To challenge the routine use of MBP in elective and emergency colorectal procedures.

Main Methods:

• A descriptive, analytical, and observational study involving 47 patients undergoing colorectal surgery without MBP.
• Procedures included debridement/resection and primary anastomosis, with 16 emergency cases.
• Perioperative antibiotics (cephalosporins and metronidazole) were administered, with no defunctioning colostomy used.

Main Results:

• Anastomotic failure occurred in 4.2% of cases, and wound infection in 8.5%.
• Ileocolic, colicocolic, and colorectal anastomoses were performed.
• A single mortality (2.1%) was recorded, unrelated to the surgical procedure or bowel preparation.

Conclusions:

• Mechanical bowel preparation is not a prerequisite for safe and successful colorectal surgery.
• Omitting MBP can be a viable option, associated with acceptable complication rates.
• Further research may support revised guidelines regarding bowel preparation protocols in colorectal surgery.