Methods: One hundred twenty-three patients who underwent colonoscopy during June 2012 to July 2012 were prospectively identified. Patients used the standard preparation of 4L polyethylene glycol solution. The quality of bowel preparation was assessed by using the Ottawa Bowel Preparation Scale according to the time interval, and other factors that might influence bowel preparation quality were analyzed. Results: Colonoscopies with a time interval of 5 to 6 hours had the best bowel preparation quality score in the whole, right, mid, and rectosigmoid colon according to the Ottawa Bowel Preparation
Scale. Patients selleck inhibitor with intervals of 6 hours or less between the initiation of polyethylene glycolintake and the start of colonoscopy had a better quality of bowel preparation than those with intervals of more than 6 hours (p = 0.040). No significant difference was found for the factors of sex, age, body mass index, hypertension, diabetes, liver cirrhosis, previous colorectal operation, previous Kinase Inhibitor Library cost obstetrics and gynecology operation. In multivariate analysis, the time interval (odds ratio 2.184; 95% CI, 1.031–4.627, p = 0.041) was a significant contributor to satisfactory bowel preparation. Conclusion: The time interval of 6 hours or less between the initiation
of PEG intake and the start of colonoscopy is the important factor to determine satisfactory bowel preparation quality. Key Word(s): 1. bowel preparation; 2. time interval; Table 1 Time interval (hours) Right colon Mid colon Rectosigmoid colon Fluid Total score <3 (n = 7) 3.29 ± 0.36 1.86 ± 0.404 1.14 ± 0.143 1.00 ± 0.218 7.29 ± 0.918 3–4 (n = 9) 3.00 ± 0.236 1.56 ± 0.176 1.22 ± 0.147 1.10 ± 0.218 6.89 ± 0.455 4–5 (n = 24) 3.04 ± 0.112 1.71 ± 0.165 1.29 ± 0.112 1.29 ± 0.127 7.33 ± 0.364 5–6 (n = 30) 2.77 ± 0.124 1.50 ± 0.115 1.07 ± 0.046 1.07 ± 0.126 6.40 ± 0.320 6–7 (n = 22) 3.32 ± 0.124 1.59 ± 0.157 1.45 ± 0.143 0.95 ± 0.167
7.32 ± 0.397 7–8 (n = 11) 3.18 ± 0.263 1.82 ± 0.226 1.55 ± 0.207 1.18 ± 0.182 MYO10 7.73 ± 0.752 >8 (n = 20) 3.45 ± 0.17 2.70 ± 0.193 1.55 ± 0.135 1.55 ± 0.114 9.25 ± 0.486 Table 2 Univariate analysis of factors associated with satisfactory bowel preparation Satisfactory preparation (Ottawa score: 0–6, n = 50) Unsatisfactory preparation (Ottawa score: 7–14, n = 73) P value Male Sex 30 (60.0%) 50 (68.4%) 0.332 Age (years) 54.42 ± 10.02 52.40 ± 12.15 0.333 Body mass index (kg/m2) 24.29 ± 3.30 24.47 ± 2.92 0.742 Hypertension 12 (24.0%) 16 (21.9%) 0.787 Diabetes 3 (6.0%) 7 (9.6%) 0.474 Liver cirrhosis 2 (4.0%) 3 (4.1%) 0.976 Previous colorectal operation 2 (4.0%) 4 (5.5%) 0.708 Previous obstetrics and gynecology operation 3 (6.0%) 3 (4.1%) 0.633 Time interval ≤6 hours 34 (68.0%) 36 (49.3%) 0.