Is mechanical bowel preparation necessary in bariatric surgery?

Area of Science:

• Bariatric Surgery
• Surgical Outcomes
• Gastrointestinal Surgery

Background:

• Historically, mechanical bowel preparation (MBP) has been standard practice before bariatric procedures.
• Colorectal surgery has demonstrated that no-MBP is non-inferior to MBP regarding postoperative complications.
• This study aimed to evaluate the non-inferiority of no-MBP in bariatric surgery.

Purpose of the Study:

• To demonstrate that omitting mechanical bowel preparation (MBP) prior to bariatric surgery is non-inferior to performing MBP.
• To compare postoperative complication rates between bariatric surgery patients who underwent MBP versus those who did not.

Main Methods:

• A prospective, randomized, controlled trial was conducted.
• Patients undergoing Roux-en-Y Gastric Bypass or Sleeve Gastrectomy were randomized to either MBP or no-MBP.
• Postoperative complications, readmissions, and wound infections within 30 days were recorded.

Main Results:

• A total of 139 patients were enrolled (71 in MBP group, 68 in no-MBP group).
• Complication rates were similar between groups (12.7% vs. 10.2%, p=0.660).
• Median hospital stay (1 day vs. 1 day, p=0.782) and readmission rates (4.4% vs. 5.6%, p=1.000) were also similar.

Conclusions:

• Mechanical bowel preparation is likely not necessary prior to bariatric procedures.
• Omitting MBP in bariatric surgery does not increase postoperative complications or negatively impact outcomes.
• This finding supports a potential change in standard surgical protocols for bariatric procedures.