Accurate evaluation of Crohn′s disease is critical for determination of a therapeutic plan. Computed tomography (CT)/magnetic resonance imaging (MRI) can not only display the intraluminal and intraperitoneal inflammation objectively, but also reveal accurately the affected mesentery and related complications comprehensively, which attracted more and more attention in recent years. This review discussed the choice of CT/MRI examination methods, their roles in determining the severity of intestinal and mesenteric inflammation, the nature of intestinal stenosis, the extent of fistula, abscess and cellulitis, and the value in diagnosing postoperative complications, in order to investigate the application value of CT/MRI examination in clinical diagnosis and treatment of Crohn′s disease.

Objective:To construct a knowledge graph,to design an intelligent risk assessment model for adverse events and a risk factor analysis control system for the disinfection supply of stomatological medical devices,and improve the quality of disinfection supply of stomatology instruments through system application.Methods:The automatic collection,conversion and loading of stomatological medical devices disinfection supply data were realized by constructing data access services,the knowledge graph of adverse events of stomatology disinfection supply was constructed by using failure mode and effect analysis(FMEA)and dynamic risk assessment theory,and the risk prediction model and root cause analysis method of adverse events of disinfection supply were constructed by using recurrent neural network(RNN),and the risk assessment and root cause analysis of adverse events of stomatology medical devices disinfection supply were carried out.Results:The top four risk factors of the adverse events of"cleaning"in disinfection supply were incorrect cleaning parameter settings,stains on the instrument after cleaning,substandard lumen cleaning after cleaning,failure to meet the standard of luminal cleaning after cleaning,and scale presence in the instrument after cleaning,respectively,and the systematic prediction probabilities were 4.67%,2.33%,1.50%,and 1.39%,respectively,which were consistent with the actual probability of occurrence of 2.14%,1.85%,0.75%,and 0.50%.The top four risk factors for the adverse event of"water stains on the surface of disinfection equipment"were too high temperature setting of disinfection equipment,too long disinfection time of disinfection equipment,residual dirt on the surface of disinfection equipment and scale residue of heating pipe,which were consistent with the composition order of the first four risk factors in the actual statistical results.Conclusion:The application of the risk assessment model of adverse events and the risk factor analysis and control system of intelligent stomatological medical device disinfection supply can timely discover the quality hidden dangers in the operation of stomatology device disinfection supply and implement risk control,and provide reference for the construction of related business systems.

Objective:To examine the clinical characteristics, the potential relative factors for postoperative abdominal septic complications, and prognosis factors of surgical recurrence of Crohn disease (CD) patients after the first surgery.Methods:All the CD patients from Department of General Surgery, Jinling Hospital, Medical School of Nanjing University who had undergone at least one abdominal surgery from January 2007 to December 2017 were included for retrospective analysis. Hospital records were reviewed for information on clinical characteristics. Relative factors of postoperative abdominal septic complications were accessed by Logistic regression models, and prognosis factors of surgical recurrence were accessed by Cox proportional hazards regression models.Results:There were 1 048 patients included (733 males and 315 females), accounting for 1 513 operations. The age was 31(17) years and the length of resected small bowel was 30.0(40.0) cm at the first resection, 20.0(35.0) cm at the second resection, and 20.0(23.5) cm at the third resection. The length of resected small bowel was 25.0(40.0) cm at any resection. At the first abdominal surgery, 70.99%(744/1 048) patients were aged between 17 and 40 years, 66.98%(702/1 048) patients had ileocolonic disease, and 60.40%(633/1 048) patients had penetrating behavior. Penetrating behavior ( OR=8.594, 95% CI: 3.397 to 21.740, P<0.01) and current smoking status ( OR=2.671, 95% CI: 1.044 to 6.832, P=0.040) were significantly associated with an increased risk of postoperative septic complications, whereas staged operation ( OR=0.360, 95% CI: 0.184 to 0.707, P=0.003) was associated with a decreased risk. Male gender ( HR=1.500, 95% CI: 1.128 to 1.995, P=0.005), upper gastrointestinal disease ( HR=1.526, 95% CI: 1.033 to 2.255, P=0.034), penetrating behavior ( HR=1.506, 95% CI: 1.132 to 2.003, P=0.005) and emergency surgery ( HR=1.812, 95% CI: 1.375 to 2.387, P<0.01) were significantly associated with an increased risk of postoperative surgical recurrence, whereas staged operation ( HR=0.361, 95% CI: 0.227 to 0.574, P<0.01) was significantly associated with a decreased risk. Conclusions:In this cohort of CD patients receiving abdominal surgery from an inflammatory bowel disease center, the median age was 31 years and the median length of resected small bowel was 30 cm, at first resection. Patients who have risk factors of adverse postoperative outcome may be benefited from staged surgical approach.

Objective:To examine the clinical characteristics, the potential relative factors for postoperative abdominal septic complications, and prognosis factors of surgical recurrence of Crohn disease (CD) patients after the first surgery.Methods:All the CD patients from Department of General Surgery, Jinling Hospital, Medical School of Nanjing University who had undergone at least one abdominal surgery from January 2007 to December 2017 were included for retrospective analysis. Hospital records were reviewed for information on clinical characteristics. Relative factors of postoperative abdominal septic complications were accessed by Logistic regression models, and prognosis factors of surgical recurrence were accessed by Cox proportional hazards regression models.Results:There were 1 048 patients included (733 males and 315 females), accounting for 1 513 operations. The age was 31(17) years and the length of resected small bowel was 30.0(40.0) cm at the first resection, 20.0(35.0) cm at the second resection, and 20.0(23.5) cm at the third resection. The length of resected small bowel was 25.0(40.0) cm at any resection. At the first abdominal surgery, 70.99%(744/1 048) patients were aged between 17 and 40 years, 66.98%(702/1 048) patients had ileocolonic disease, and 60.40%(633/1 048) patients had penetrating behavior. Penetrating behavior ( OR=8.594, 95% CI: 3.397 to 21.740, P<0.01) and current smoking status ( OR=2.671, 95% CI: 1.044 to 6.832, P=0.040) were significantly associated with an increased risk of postoperative septic complications, whereas staged operation ( OR=0.360, 95% CI: 0.184 to 0.707, P=0.003) was associated with a decreased risk. Male gender ( HR=1.500, 95% CI: 1.128 to 1.995, P=0.005), upper gastrointestinal disease ( HR=1.526, 95% CI: 1.033 to 2.255, P=0.034), penetrating behavior ( HR=1.506, 95% CI: 1.132 to 2.003, P=0.005) and emergency surgery ( HR=1.812, 95% CI: 1.375 to 2.387, P<0.01) were significantly associated with an increased risk of postoperative surgical recurrence, whereas staged operation ( HR=0.361, 95% CI: 0.227 to 0.574, P<0.01) was significantly associated with a decreased risk. Conclusions:In this cohort of CD patients receiving abdominal surgery from an inflammatory bowel disease center, the median age was 31 years and the median length of resected small bowel was 30 cm, at first resection. Patients who have risk factors of adverse postoperative outcome may be benefited from staged surgical approach.