Oral mechanical bowel preparation for colorectal surgery [Internet]
"We found weak evidence suggesting that OMBP has similar effectiveness as no preparation with respect to all-cause mortality, anastomotic leakage, wound infection, and peritonitis for patients undergoing elective colorectal surgery. However, the evidence base was too weak to confidently exclude either modest benefit or modest harm. Evidence for other outcomes and comparisons was insufficient to draw definitive conclusions. The effectiveness of alternative active OMBP strategies could not be assessed because the studies compared interventions that are no longer used. Data on harms were also too sparse for analysis. Therefore, there is a clear need for new comparative studies (both randomized and nonrandomized) of the currently used OMBP strategies. "