Objective:To investigate the effects of lactulose and oral rehydration salt powder (Ⅲ) on bowel preparation for colonoscopy and their impact on the detection rate of lesions.Methods:A retrospective study was conducted with 120 patients who underwent colonoscopy at The Second Affiliated Hospital of Wenzhou Medical University from January 2023 to April 2024. The patients were randomly divided into a control group and an experimental group, with 60 patients in each group. The control group received Hengkang Zhengqing and simethicone for bowel preparation, while the experimental group received lactulose, oral rehydration salt powder (Ⅲ), and simethicone for bowel preparation. The Boston Bowel Preparation Scale (referred to as the Boston scale) was used to assess bowel cleanliness, the Bubble scale was used to assess the presence of gas in the bowel, and a self-designed questionnaire was used to evaluate patient satisfaction after colonoscopy. The Boston scale scores, Bubble scale scores, patient satisfaction, lesion detection rates, and the incidence of adverse reactions were compared between the two groups. Results:The total score on the Boston scale in the experimental group was significantly higher than that of the control group [(7.23 ± 1.30) vs. (5.44 ± 1.17), t = 7.92, P < 0.001]. The Bubble scale score in the experimental group was significantly higher than that of the control group [(2.60 ± 0.15) vs. (2.21 ± 0.10), t = 16.75, P < 0.001]. The rates of acceptable taste and tolerance in the experimental group were 96.6% (58/60) and 95.0% (57/60), respectively, both of which were higher than those in the control group at 86.6% (52/60) and 81.6% (49/60) ( χ2 = 3.92, 5.17, P = 0.048, 0.023). The detection rate of colonic polyps in the experimental group was significantly higher than that in the control group [31.67% (19/60) vs. 15.00% (9/60), χ2 = 4.65, P = 0.031]. The incidence of adverse reactions in the experimental group was significantly lower than that in the control group [3.33% (2/60) vs. 13.33% (8/60), χ2 = 3.92, P = 0.048]. The patient satisfaction rate after examination in the experimental group was significantly higher than that in the control group [96.67% (58/60) vs. 85.00% (52/60), χ2 = 4.90, P = 0.027]. Conclusions:The intestinal preparation for colonoscopy using the lactulose and oral rehydration salt powder (Ⅲ) regimen can significantly improve the quality of bowel preparation and the detection rate of lesions. Additionally, it offers better taste, higher patient tolerance, and greater satisfaction, along with fewer adverse reactions compared with the Hengkang Zhengqing and simethicone regimen.

Objective:To investigate the effects of lactulose and oral rehydration salt powder (Ⅲ) on bowel preparation for colonoscopy and their impact on the detection rate of lesions.Methods:A retrospective study was conducted with 120 patients who underwent colonoscopy at The Second Affiliated Hospital of Wenzhou Medical University from January 2023 to April 2024. The patients were randomly divided into a control group and an experimental group, with 60 patients in each group. The control group received Hengkang Zhengqing and simethicone for bowel preparation, while the experimental group received lactulose, oral rehydration salt powder (Ⅲ), and simethicone for bowel preparation. The Boston Bowel Preparation Scale (referred to as the Boston scale) was used to assess bowel cleanliness, the Bubble scale was used to assess the presence of gas in the bowel, and a self-designed questionnaire was used to evaluate patient satisfaction after colonoscopy. The Boston scale scores, Bubble scale scores, patient satisfaction, lesion detection rates, and the incidence of adverse reactions were compared between the two groups. Results:The total score on the Boston scale in the experimental group was significantly higher than that of the control group [(7.23 ± 1.30) vs. (5.44 ± 1.17), t = 7.92, P < 0.001]. The Bubble scale score in the experimental group was significantly higher than that of the control group [(2.60 ± 0.15) vs. (2.21 ± 0.10), t = 16.75, P < 0.001]. The rates of acceptable taste and tolerance in the experimental group were 96.6% (58/60) and 95.0% (57/60), respectively, both of which were higher than those in the control group at 86.6% (52/60) and 81.6% (49/60) ( χ2 = 3.92, 5.17, P = 0.048, 0.023). The detection rate of colonic polyps in the experimental group was significantly higher than that in the control group [31.67% (19/60) vs. 15.00% (9/60), χ2 = 4.65, P = 0.031]. The incidence of adverse reactions in the experimental group was significantly lower than that in the control group [3.33% (2/60) vs. 13.33% (8/60), χ2 = 3.92, P = 0.048]. The patient satisfaction rate after examination in the experimental group was significantly higher than that in the control group [96.67% (58/60) vs. 85.00% (52/60), χ2 = 4.90, P = 0.027]. Conclusions:The intestinal preparation for colonoscopy using the lactulose and oral rehydration salt powder (Ⅲ) regimen can significantly improve the quality of bowel preparation and the detection rate of lesions. Additionally, it offers better taste, higher patient tolerance, and greater satisfaction, along with fewer adverse reactions compared with the Hengkang Zhengqing and simethicone regimen.