Shanghai began to strengthen the community health service system in 1997 , and had officially en-tered the period of “connotation construction” with the core policy of family doctor system in 2011 after the period of“service framework and network establishment” and“operational mechanism reform”. Through summarizing the poli-cy files related the family doctor system and based on 2013 report on monitoring and evaluation of family doctor system in Shanghai, the paper presented the progress of the system from aspects of system coverage, signature relationship, service mode and operational mechanism, and analyzed the development bottlenecks of the system from aspects of the policy itself, service principal, service supervision and service objects. Finally, the paper proposed some suggestions in order to give some references for further development of national general practitioner system.

Objective:To provide scientific evidence for infection prevention and control by analyzing the risk factors of surgical site infection, which can move forward the gateway of infection prevention and control.Methods:The surgery-related information of patients admitted to the Department of General Surgery and Department of Orthopedics, People's Hospital of Guangnan Hospital of Yunnan province from November 2016 to August 2019 was retrospectively analyzed. According to whether postoperative surgical site infection occurred, the patients were divided into an infection group and a non-infection group. Logistic regression model was used to analyze the risk factors of surgical site infection.Results:A total of 9 346 patients, consisting of 117 patients in the infection group and 9 229 patients in the non-infection group, were included for final analysis. In the infection group, the incidence of surgical site infection was 1.25%. Multivariate analysis showed that hypoproteinemia ( OR = 2.585), unclean incision ( OR = 3.243 and 5.125), and operation duration more than 3 hours ( OR = 2.315), blood transfusion ( OR = 2.239), drainage tube placement ( OR = 2.133) and indwelling catheter placement ( OR = 1.973) were the independent risk factors for surgical site infection, while prophylactic use of antibiotics was a protective factor ( OR = 0.383). Conclusion:Individual factors, operation-related factors, and treatment-related factors are closely related to the occurrence of surgical site infection. Much attention should be paid to the clinical issues like preoperative hypoproteinemia, perioperative prophylactic use of antibiotics and postoperative drainage tube and indwelling catheter placement.

Objective     To explore the correlation between the imaging features of peripheral ground-glass pulmonary nodules and the invasion degree of lung adenocarcinoma, and the high risk factors for infiltrating lung adenocarcinoma under thin-slice CT, which provides some reference for clinicians to plan the surgical methods of pulmonary nodules before operation and to better communicate with patients, and assists in building a clinical predictive model for invasive adenocarcinoma. Methods    Clinical data of the patients with peripheral ground-glass pulmonary nodules (diameter≤3 cm) in thin-slice chest CT in the First Affiliated Hospital of Soochow University from January 2019 to January 2020 were continuously collected. All patients underwent thin-slice CT scan and thoracoscopic surgery in our center. According to the pathological examination results, they were divided into two groups: an adenocarcinoma lesions before infiltration group, and an invasive lung adenocarcinoma group. The thin-slice CT imaging parameters of pulmonary nodules were collected. The nodular diameter, mean CT value, consolidation tumor ratio (CTR), nodular shape, vacuolar sign, bronchial air sign, lobulation sign, burr sign, lesion boundary, pleural depression sign, vascular cluster sign and other clinical data were collected. Univariate and multivariate analyses were conducted to analyze the independent risk factors for the infiltrating lung adenocarcinoma, and to analyze the threshold value and efficacy of each factor for the identification of infiltrating lung adenocarcinoma. Results     Finally 190 patients were enrolled. There were 110 patients in the adenocarcinoma lesions before infiltration group, including 21 males and 89 females with a mean age of 53.57±10.90 years, and 80 patients in the invasive lung adenocarcinoma group, including 31 males and 49 females with a mean age of 56.45±11.30 years. There was a statistical difference in the mean CT value, nodular diameter, CTR, gender, smoking, nodular type, nodular shape, vacuolar sign, lobulation sign, burr sign, lesion boundary, pleural depression sign, vascular cluster sign between the two groups (P<0.05). However, there was no statistical difference between the two groups in age (P=0.081), lesion site (P=0.675), and bronchial air sign (P=0.051). Multiple logistic regression analysis showed that nodular diameter, mean CT value, CTR and lobulation sign were independent risk factors for differentiating preinvasive adenocarcinoma from invasive adenocarcinoma. At the same time, the threshold value was calculated by Youden index, indicating that the CTR was 0.45, the nodal diameter was 10.5 mm and the mean CT value was –452 Hu. Conclusion     In the peripheral ground-glass pulmonary nodules, according to the patient's CT imaging features, such as mixed ground-glass nodules, irregular shapes, vacuoles, short burrs, clear boundaries, pleural indentations, and vascular clusters, have a certain reference value in the discrimination of the invasion degree of ground-glass pulmonary nodules. At the same time, it is found in this research that peripheral ground-glass pulmonary nodules with diameter greater than 10.5 mm, CT value greater than –452 Hu, CTR greater than 0.45 and lobulation sign are more likely to be infiltrating lung adenocarcinoma.