Objective To understand the management status quo of migrant workers with chronic hepatitis B (CHB) to ex‐plore the management countermeasures and improve the survival quality for tamping the foundation of the healthy project .Methods Totally 300 migrant workers with CHB were performed the living quality evaluation and investigation on the service needs ,com‐pliance ,economic condition ,categories and proportion of reimbursement by adopting the supplementary revision of SF‐36 living quality scale and general information questionnaire ;the influencing factors of their living quality were performed the univariate anal‐ysis and multivariate stepwise regression analysis .Results The statistical analysis found that whether convenient for outside visit‐ing hospital ,categories and proportion of reimbursement ,whether normalized antiviral therapy ,whether conducting examination and follow up at regular intervals and liver disease specific symptoms were the influencing factors of living quality in the migrant work‐ers with CHB(P<0 .05);the living quality in the patients with outside convenient visiting hospital ,high reimbursement proportion , normalized antiviral therapy and examination and follow up at regular intervals was significantly higher than that in the patients with inconvenient outside visiting hospital ,low reimbursement proportion ,non‐normalized anti‐viral therapy and examination and follow up without regular intervals(P<0 .05);the liver disease specific symptom score showed the positive correlation trend with the living quality score (B=7 .657 ,SD=2 .650 ,t=2 .889 ,P=0 .004) .Conclusion It is necessary to improve the patient′s medical needs ,reimbursement type and proportion ,increase the compliance of patient′s normalized examination and follow‐up at regular in‐tervals and standard antiviral treatment ,thus to realize the standardized examination and treatment in CHB patients ,prevent or de‐lay the disease progression ,avoid liver cirrhosis and decompensated hepatopathy ,reduce the occurrence of HCC ,improve the quality of life and prolong the survival period .

Objective: Computed tomography (CT)-guided percutaneous lung biopsy is difficult for small nodules and lesions that are adjacent to large blood vessels. This study investigated the validity of CT-guided percutaneous lung biopsy in the diagnosis of pulmo-nary nodules with a digital angle instrument. Methods: This study was a retrospective analysis of 35 patients with lung mass≤60 mm, who underwent CT-guided percutaneous lung biopsy from January 2018 to September 2018. Patients were assigned in to three groups. Group A and B were patients with pulmonary nodules≤30 mm. Biopsy of group A was performed with the help of a digital an-gle instrument, and group B didn’t use digital angle instrument. Group C had lung mass of>30 mm, and the biopsy was performed without using the instrument. The size of the mass, frequency of punctures, distance of the puncture, and complication of pneumotho-rax after puncture were compared among the three groups. Results: The maximum diameter of pulmonary nodules in group A (18.4 ± 2.1) mm was significantly lower than that in groups B (28.3 ± 2.0) mm and C (43.2 ± 3.6) mm, and their P value were 0.0034 and 0.0028, respectively. Some patients in group A were at risk because of severe chronic obstructive pulmonary disease and proximity of lesions to large blood vessels. The puncture distance in group A was also significantly more than groups B (P<0.039). However, the probability of puncture success in group A was 100%, which was significantly higher than groups B and C. The postoperative complica-tions in group A were also significantly fewer than in other two groups. Conclusions: CT-guided percutaneous lung biopsy with a digital angle instrument is a safe, simple, and accurate diagnostic method, especially in patients with pulmonary nodular lesions.

Objective To investigate the optimal adaptation period for mice at different developmental stages during metabolic cage experiments, aiming to provide a reference for conducting metabolic research using mice. Methods A total of 80 male C57BL/6J mice at three developmental stages (weaning period M1, adolescent M2, and adulthood M3) were subjected to a 7-day metabolic cage experiment. Data on food intake, water intake, energy expenditure, respiratory quotient, body weight, and activity levels were recorded every five minutes. The collected data were processed using time series decomposition and comprehensive cluster analysis. Statistical differences were compared using repeated measures ANOVA combined with t-test to determine the optimal adaptation period. Results Significant differences in metabolism were observed among mice in different developmental stages (P<0.01). Compared with adolescent (M2) and adult (M3) mice, weaned mice (M1) exhibited lower activity level (P<0.01) and less distinct circadian rhythm. M1 mice had higher oxygen consumption, carbon dioxide production, and energy expenditure, as well as a lower respiratory quotient (all P<0.001), indicating that they mainly relied on fat as an energy source. Analysis of food intake, water intake, and energy expenditure revealed significant differences between the first light cycle (0-12 h) and the second light cycle (24-36 h) across all developmental stages (all P<0.05) . However, there was no significant difference in daily food intake or water intake after 24 hours (both P>0.05). Comprehensive cluster analysis of multiple indicators showed that the overall indicators of mice during the first 24 hours in the metabolic cages did not cluster with those of the subsequent 6 days, demonstrating significant differences. Conclusion Metabolic cage experiment can be used to detect continuous physiological changes in mice. The results suggest that mice can adapt to new metabolic cages environment within 24 hours, providing a theoretical basis for the design of metabolic experiments using mice.

OBJECTIVE To investigate the implementation effects of the national centralized drug volume-based procurement policy （abbreviated as “national centralized procurement policy”） in Guangxi Zhuang Autonomous Region prefecture， and to provide a reference for the future centralized drug procurement work of the medical institution. METHODS Drug procurement data before and after policy implementation were included in the study. The six secondary indicators （such as availability， affordability， and drug safety） and eighteen third-level indicators （such as completion rate of agreed purchase volume， affordability level， drug revenue proportion） were introduced， guided by the policy objectives and issues of concern to policy beneficiaries. Descriptive statistics was adopted to analyze the data before and after policy implementation （in 2019 and 2020） in terms of differences and change trends. RESULTS In terms of accessibility， the participation rate of medical institutions in Guangxi Zhuang Autonomous Region was 92.55%， the proportion of diseases involved and median completed procurement rate were 40.16%， and 287.82% respectively， and the total centralized delivery rate was 97.20%. In terms of affordability， the total reduction amplitude in drug price was 74.80% from 2019 to 2022； the charge for medicine per capita in hospitalization， the proportion of medicine used for outpatient service and hospitalization， decreased by 17.61%， 10.22%， and 20.10% in order； the burden levels on medical fares for patients were all below 1 in addition to chronic diseases， and anti-tumor drugs. In terms of the impact on medicine， the ratio of adverse drug reaction event cases in 2022 was 66.00%， an increase of 1.29% compared to the previous； since the implementation of the policy， 12 drugs from local pharmaceutical enterprises from Guangxi Zhuang Autonomous Region had passed the consistency evaluation， and the market concentration rate of the top 8 pharmaceutical companies was less than 20.00%. In terms of the impact on healthcare and medical insurance， the public medical institutions achieved generic substitution for originator drugs mostly until 2022； about 9.12% of drugs that were non- centrally purchased in the same category were used； 63.39% of people under investigation did not show a need for a second dressing change； drug expenditure decreased by 2.459 billion yuan. CONCLUSIONS The national centralized procurement policy achieves a significant effect in Guangxi Zhuang Autonomous Region. On the other hand， attention should be paid to these suggestions as follows: expanding the category of drugs used in clinic， conducting clinically comprehensive evaluation of selected drugs， and improving reasonable allocation strategy， etc.