Chung E, et al. – Authors here investigated variables associated with bowel preparation in patients with prior colorectal resection. Patients with a preserved right colon seemed associated with poor bowel preparations compared with patients who underwent right–side colon resection. For better bowel preparation, they recommend considering these differences when preparing patients with history of colorectal resection for colonoscopy.

Methods

• Authors consecutively selected 247 patients with prior colorectal resection and undergone surveillance colonoscopy.
• All patients underwent endoscopy performed by same clinician.
• They rated quality of bowel preparation (QBP) using Aronchick grade and categorized it as either satisfactory (Aronchick grades, 1 to 3) or unsatisfactory (Aronchick grades, 4 and 5).
• Analysis of factors associated with QBP was performed.

Results

• 49 patients (19.8%) had unsatisfactory bowel preparation.
• Observations indicated no difference in QBP on the basis of sex, age, body mass index, hypertension history, diabetes mellitus history, smoking habits, time after surgery, resected colon length, or bowel preparation method.
• There appeared a marginal association of operation method with QBP (P=0.056).
• When authors dichotomized patients into right-side colon preservation or not, the right colon preservation group indicated a marked association with poor QBP on univariate (22.3% vs. 7.5%, P=0.028) and multivariate analysis (odds ratio, 3.6; 95% confidence interval, 1.0-12.3; P=0.038).