Objective To analyze risk factor of bile duct injury (BDI) during laparoscopic cholecystectomy (LC). Methods A retrospective population-based cohort study was carried out on 13878 patients undergoing LC from Apr 1994 to Dec 2003. Patients were divided into BDI group and non-BDI group. Factors with statistically significant differences between groups in anivariable analysis were selected to construct a multivariate logistic regression mode. Result Among 13878 LC procedures 38 BDI (0.27%) were identified. Factors which were of significant differences between groups in anivariable analysis includ diameter of common bile duct(?~2=5.92, P

Objective To study the relationship between angiogenesis and pathology and prognosis of cholangiocarcinoma. Methods Immunohistochemistry was used to determine micro-vessel density (MVD) and the expression of vascular endothelial growth factor(VEGF) and its receptor Flk-1/KDR in 50 cholangiocarcinoma cases. Results were compared with pathological and follow-up parameters. Results MVD in cholangiocarcinoma tissues and para-tumor tissues (34.04 ? 11.08, 32.80 ?9.28) were higher than normal bile duct tissues ( 11. 67 ? 4. 64) ( P

Objective: To investigate anxiety and associated factors among college students returned to school during COVID-19 epidemic, and to provide reference for anxiety relief and school life adaptation to help college students. Methods: A cross-sectional study was conducted among 4 750 students selected from Nanjing Medical University, China Pharmaceutical University, Nanjing University of Chinese Medicine from 2 May to 9 May, 2020. Zung Anxiety Self-rating Scale (SAS) was used to measure anxiety status of students. The self-made questionnaire was used to investigate the related factors. Results: During COVID-19 epidemic situation ,20.0% college students returned to school had mild anxiety, 6.5% had moderate or severe anxiety. College students unable to adapt to campus closed-off management with a higher anxiety detection rate of 52.9%.Students with heavy study burden whose offline study time per day ≥6 hours have a higher anxiety detection rate of 36.0%. Students never exercising had a higher anxiety detection rate of 43.5%. The detection rate of anxiety not participating in online sports and sports activites was 41.6%. 40.7% students were detected of anxiey because of loneliness caused by not being able to meet friends. Multiple logistic regression analysis revealed that the adaptation to the campus closed-off management, satisfaction with the campus disinfection, participation in group activities, the time of offline study per day, the time of online study per day, tension about the exams, regular routine, exercise, participation in online activities were the influencing factors related to anxiety. Conclusion During COVID-19 epidemic some of college students exhibit anxiety when back to school life, which might be associated with campus management, study burden, exercise and regular routine, school activities and so on. Schools should take measures to relieve students anxiety while epidemic prevention.

Objective To evaluate the maneuvre of curettage and aspiration(LTCA) in laparoscopic hepatectomy. MethodsWe used Peng′s multifunctional operative dissector(PMOD) to perform laparoscopic liver transection by maneuvre of curettage and aspiration in 20 cases undergoing laparoscopic hepatectomy. Results Procedures were all successful. The recovery was uneventful without any complications. Mean operative time was 105 minutes, the average bleeding volume was 420 ml, the largest excised sample size was 10 cm?9 cm?7 cm. All patients were discharged within one week. ConclusionsThe new technique-LTCA can be used in laparoscopic hepatectomy, it has the advantages of clear anatomy, good exposure of canal construction, rapid liver transection, satisfactory hemostasis and clear operative field.

In order to prepare three-dimensional scaffolds with "ideal pore-structure" for tissue engineering, a novel water dissoluble adhesive was developed, and the property of adhesive as well as influence of experimental condition on bonded porogen assembly was investigated. Experimental results showed that it was possible to fabricate large dimensional porogen assembly with homogenous and controllable bonding extent by this adhesive, and a large dimensional (45 mm in diameter, 55mm in thickness) biodegradable poly(D,L-lactic acid)(PDLLA) scaffold resulting from bonded porogen was formed. The scaffolds with high porosity as well as with controllable and homogeneous inner-structure can be easily formed. In addition, pore size of scaffolds as well as diameter of openings can be controlled by adjusting the porogen size and bonding degree in bonded porogen assembly.
Adhesives ; chemistry ; Lactic Acid ; chemistry ; Polyesters ; Polymers ; chemistry ; Porosity ; Solubility ; Surface Properties ; Tissue Engineering ; Tissue Scaffolds ; chemistry