Abstract: This study mainly analyzed the factors affecting the success rate of cecal intubation during multi-slice spiral CT(MSCT) virtual colonoscopy. 95 patients undergoing MSCT virtual colonoscopy were selected as the study subjects, and 95 patients were surveyed using self-made questionnaires, and 95 questionnaires were issued and 88 were recovered. The success rate of cecal intubation in MSCT virtual colonoscopy was counted, and the failure of blind intubation were included in the control group (14 cases), the successful blind intubation were included in the study group (74 cases). Comparing the anxiety self-rating scale score (SAS) and visual simulation score (VAS) between the two groups. With the dependent variable affecting cecal intubation rate in MSCT virtual colonoscopy, the variables with P<0.05 in univariate analysis was selected for multivariate Logistic regression analysis. The results showed that the SAS score and VAS score of the study group were lower than those of the control group (P<0.05). The success rate of cecal intubation during colonoscopy was related with age, BMI, quality of bowel preparation, bowel habits. Those who with advanced age, constipation, poor bowel preparation quality, and low cecal intubation during low BMI colonoscopy the rate of cecal intubation during colonoscopy was lower (P<0.05). The advanced age, constipation, poor bowel preparation quality, high SAS score, low BMI, and high VAS score are the risk factors affecting the success rate of cecal intubation in multilayer spiral CT simulation colonoscopy.

Key words: multi-slice spiral CT virtual colonoscopy, cecal intubation, success rate, anxiety, pain