Abstract:Objective To explore the effect of medical staff evaluate the last rectal effluent and guide the use of laxatives on the bowel cleanliness quality of capsule endoscope.Methods The patients who underwent capsule endoscopy from January 2016 to March 2019 were divided into group experimental group (medical staff-judgment group, n = 21) and control group (patient self-judgment group, n = 43). Compare the quality of bowel cleanliness and the positive rate of diagnosis of intestine disease in the two groups.Results The number of additional laxatives in the experimental group was more than that in the control group (23.81% and 4.65%, P = 0.005). In the quantitative evaluation, the cleanness of the whole small intestine and the cleanliness of the distal small intestine of the experimental group were better than those of the control group [(9.52 ± 0.68) and (8.49 ± 1.41), P = 0.001; (8.19 ± 1.21) and (6.84 ± 1.83), P = 0.002]. In the qualitative evaluation, the cleanness of the whole small intestine of the experimental group was excellent in 3 cases, good in 11 cases, fair in 7 cases, and poor in 0 cases, the control group was excellent in 4 cases, good in 20 cases, fair in 10 cases, and poor in 9 cases, the experimental group was better than the control group (P = 0.003); The distal small intestine cleanliness of the experimental group was excellent in 2 cases, good in 1 case, fair in 16 cases, poor in 2 cases, in the control group was excellent in 2 cases, good in 14 cases, fair in 6 cases, poor in 21 cases, and the experimental group was better than the control group (P = 0.018). In the overall adequacy assessment, 17 cases were adequate in the experimental group, 4 cases were inadequate, 20 cases were adequate in the control group, and 23 cases were insufficient. The experimental group was better than the control group (P = 0.005). In the R/G ratio integral (R/G red intensity to green intensity ratio), the cleanness of the whole small intestine and the cleanliness of the distal small intestine of the experimental group are better than those of the control group [(6.08 ± 0.80) and (5.52 ± 0.94), P = 0.014; (5.67 ± 0.79) and (5.11 ± 1.04), P = 0.021]. The positive rate of diagnosis of total small bowel disease in the experimental group was 81.00%, and that in the control group was 74.41%. The experimental group was higher than the control group, but the difference between the two groups was not statistically significant (P = 0.531). The positive rate of diagnosis of distal small bowel disease in the experimental group was higher than the control group (47.62% and 23.26%, P = 0.026).Conclusion The medical staff evaluate the final rectal effluent characteristics through photos and guide the use of laxatives to improve the quality of bowel cleanliness of capsule endoscopy. The method is simple and has great clinical practical value.