ABSTRACT
Objective To explore the difference in gastric residual volume (GRV) between singledose and split-dose bowel preparation before colonoscopy under general anesthesia.Methods From October 8th to December 30th in 2016,the out-patients undergoing gastroscopy and colonoscopy with anesthesia services on the same day were selected and divided into the traditional single-dose bowel preparation group and split-dose bowel preparation group.The GRV and intestinal preparation quality were compared between the two groups.T test was used for statistical analysis and multiple linear regression analysis was performed for the influence factors of GRV analysis.Results A total of 121 patients were enrolled,60 patients in the spilt-dose bowel preparation group and 61 in the traditional single-dose bowel preparation group.The mean GRV of the split-dose bowel preparation group was (17.3 ± 12.2) mL,which was lower than that of the single-dose bowel preparation group ((23.7 ± 14.6) mL),and the difference was statistically significant (t =2.642,P=0.009).The score of intestinal preparation quality of the split-dose bowel preparation group was 8.05 ± 0.85,which was higher than that of the single-dose bowel preparation group (7.67±1.19),and the difference was statistically significant (t =-2.002,P=0.048).Fasting time was related with GRV (odd ratios (OR)=1.732,95％ contidence interval (CI) O.299 to 3.168,P=0.018).Conclusion The GRV of patients with split-dose bowel preparation before colonoscopy is lower than that of traditional single-dose bowel preparation,thus reducing the risk of aspiration during anesthesia.