Objective　To analyze the hepatitis B (HBV) incidence trend and intervention measures implemented over 15 years (2009-2023) following the establishment of Wuwei demonstration zone and to explore a new model suitable for hepatitis B prevention and control in rural areas of western China. Methods　Data on reported hepatitis B cases (1994-2023) were collected from Wuwei City's Disease Monitoring Report Management Information System, vaccination records from the Immunization Planning Information Management System, hepatitis B maternal-to-child transmission prevention data from the Management Information System for Prevention of HIV, Syphilis, and Hepatitis B Mother-to-Child Transmission. Additionally, field epidemiological survey data, serological test results, and intervention measures were also used to analyze using descriptive epidemiological methods. Results　Over the 15-year period, the average annual incidence rate of hepatitis B in the demonstration area was 200.48 per 100 000, representing a 38.76% reduction compared to the pre-construction period (1994-2008, 327.35 per 100 000). Post-establishment, the incidence decreased from 637.70 per 100 000 in 2009 to 87.45 per 100 000 in 2023, showing an average annual decline of 13.23%. In intensified intervention areas, the incidence decreased by 89.28%, and the rate stabilized in the mid-to-late stages. Among pregnant women, the HBsAg-positive rate was 4.41%, with 99.42% of newborns born to HBsAg-positive mothers receiving hepatitis B immunoglobulin immunization. The prevalence of chronic hepatitis B, liver cirrhosis, and liver cancer-related diseases decreased by 42.19%, while the mortality rate of hepatitis B patients declined from 8.69% to 2.00%. Public awareness of hepatitis B prevention and control increased from 43.48% to 83.79%. A hepatitis B prevention and control model suitable for impoverished western regions—the “Wuwei Model”—was established and validated. This model emphasizes short-course vaccination, early intervention, integration of prevention and treatment, and collaborative efforts. Conclusion　The “Wuwei Model” significantly reduced the incidence and mortality of hepatitis B in the demonstration area, demonstrating effective disease control. Further validation and promotion of this model are needed. Continued efforts should focus on expanding whole-population screening for chronic hepatitis B infection, improving the management of chronic hepatitis B carriers, and increasing immunization rates among susceptible adult populations.

Objectives:Fenofibric acid is extracted from the widely used hypolipemic fenofibrate,nowadays being approved for marketing around numerous nations and regions,nonetheless not in China.Present trial evaluated the efficacy and safety in the Chinese hypertriglyceridemia population. Methods:This is a multi-center,randomized,double-blind,placebo-controlled phase Ⅲ clinical trial.Patients from 3 different cohorts,including severe hypertriglyceridemia(HTG),moderate HTG and mixed-dyslipidemia(MD),were randomized at 1:1 ratio to receive fenofibric acid 135 mg or placebo daily for 12 weeks.The primary endpoint was the percentage change of triglyceridemia(TG)from baseline at week 12.Secondary endpoints were the percentage changes of other blood lipid indexes.At the same time,the incidence of medical adverse events was observed. Results:Among the three cohorts of patients with severe HTG(n=52),moderate HTG(n=23)and MD(n=52),the TG levels in the fenofibric acid-treated group decreased by(49.12±29.19)%,(49.95±25.19)%and(49.79±19.28)%,respectively from baseline to 12 weeks,while the corresponding placebo groups decreased by(18.88±40.69)%,(8.11±29.86)%and increased by(10.42±73.04)%,respectively from baseline to 12 weeks.The differences between treatment and placebo groups were statistically significant(P<0.017 for severe HTG cohort,P<0.05 for moderate and MD cohort).The high-density lipoprotein cholesterol(HDL-C)in the fenofibric acid-treated group increased by(25.51±21.45)%,(24.55±24.73)%,and(23.60±27.38)%,and the placebo group increased by(1.91±20.42)%,(2.40±9.32)%and(7.13±19.12)%,respectively,the differences between the two groups were statistically significant(all P<0.05).In the fenofibric acid group,adverse events with incidence>5%included upper respiratory tract infection(10.9%),abdominal pain(6.3%),and increased serum creatinine levels(6.3%),rates of adverse events were similar between the two groups(P>0.05). Conclusions:Fenofibric acid can significantly reduce triglycerides and elevate HDL-C levels safely in Chinese patients with severe to moderate HTG without statin or MD patients on top of statin therapy.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

As a new type of immunosuppressant，iguratimod can mediate the anti-inflammatory signaling pathway by inhibiting the proliferation of inflammatory cells and reducing the release of inflammatory cytokines， and play the role of anti-inflammatory. It can affect the proliferation of immune cells and the expression of immune factors，reduce the production and deposition of immune complexes in the body，and play the role of immune regulation. It can regulate bone metabolism by mediating signaling pathways such as Wnt/β-catenin，Toll-like receptor 4/nuclear factor-κB and osteoprotegerin/nuclear factor-κB receptor activating factor ligand， and play a role in bone protection. It can inhibit pulmonary fibrosis by inhibiting the expression of transforming growth factor β1/ Smad2/3 signaling pathway，tumor necrosis factor-α，interleukin-1，interleukin-6，matrix metalloproteinase-9 and other inflammatory cytokines in lung tissue，and inhibiting the expression of collagen and fibronectin. Its efficacy and safety have been confirmed in the clinical application of rheumatoid arthritis and primary Sjogren syndrome and included in the diagnosis and treatment of the disease. It has also shown good efficacy in the clinical application of other connective tissue diseases such as systemic lupus erythematosus and ankylosing spondylitis，and no obvious safety risks have been found.

Objective To investigate the effect of different doses of esketamine combined with hydromorphone postoperative patient-controlled intravenous analgesia(PCIA)on depression in elderly pa-tients undergoing total knee arthroplasty.Methods A total of 180 elderly patients,44 males and 136 fe-males,aged 65-80 years,BMI 18.5-35.0 kg/m2,ASA physical status Ⅱ or Ⅲ,undergoing total knee arthroplasty(TKA)under elective general anesthesia combined with adductor block from J uly 2023 to Sep-tember 2023.Patients were divided into three groups by random number table method;control group(group C),esketamine 0.5 mg/kg group(group E1),and esketamine 1.0 mg/kg group(group E2),60 patients in each group.After operation,groups C,E1 and E2 were given hydromorphone 0.2 mg/kg,esketamine 0.5 mg/kg combined with hydromorphone 0.2 mg/kg,and esketamine 1.0 mg/kg combined with hydromor-phone 0.2 mg/kg to receive PCIA,respectively,and the three groups were diluted to 100 ml with normal saline.Parameters were set as follows.The background infusion rate was 1.5 ml/h,and the single press dose was 1.5 ml,and the locking time was 15 minutes.If the VAS pain score at rest was greater than or equal to 4 points and the analgesic effect of pressing the PCIA pump was not effective,then intramuscular injection of tramadol 0.1 g was used for remedial analgesia.Hamilton depression scale(HAMD)score was performed 1 day,3 and 7 days after surgery.Depressive state was classified as having HAMD score ≥ 8 points.VAS pain scores at rest were performed 1 day,3 and 7 days after surgery.The number of depression within 7 days after surgery,the number of effective(D1)and total(D2)pump compressions and D1/D2 within 3 days after surgery,the number of rescue analgesia,the occurrence of adverse reactions such as tra-madol dosage,dizziness,headache,multiple dreams,hallucinations,nausea and vomiting were recorded.Results Twenty-one patients(35％)in group C experienced depression,7 patients(12％)in group E1,and 8 patients(13％)in group E2 during 3 days after surgery.Eight patients(13％)in group C experi-enced depression,1 patients(2％)in group E1,and 2 patients(3％)in group E2 during 7 days after sur-gery.Compared with group C,the incidence of depression 3 and 7 days after surgery,rescue analgesia rate in group E1 were significantly decreased,the incidence of depression 3 and 7 days after surgery,dizziness,headache,and dreaminess within 3 days after surgery in group E2 were significantly decreased(P＜0.05).There were no significant differences in the incidence of depression and VAS pain scores between group El and group E2 at 1,3,and 7 days after surgery.Conclusion Esketamine 0.5 and 1.0 mg/kg for PCIA in elderly patients after TKA can improve postoperative depression,while esketamine 1.0 mg/kg can reduce the incidence of postoperative dizziness,headache,and multiple dreams.

Objective:To observe the size changes under ultrasound of 4C type thyroid micronodules classified by 2020 Chinese Thyroid Imaging Reporting and Data System (C-TIRADS)during follow-up.Methods:In this cross-sectional study, the data of thyroid ultrasonography in physical examination center in the Affiliated Zhongshan Hospital of Dalian University between December 2017 and December 2021 were retrospectively included, thyroid nodules were classified according to C-TIRADS, to observe the changes by ultrasound of maximum diameter and volume of 4C type thyroid micronodules during follow-up.Results:A total of 102 subjects receiving physical examinations with 103 thyroid micronodules were enrolled in this study. The maximum diameter and volume of thyroid micronodules at initial examination was 5.0 (4.0, 7.0) mm and 52.5 (25.2, 113.4) mm 3 respectively, and it was 6.0 (4.0,7.0) mm、65.6 (25.2,147.0) mm 3 at the last examination, respectively. Of the thyroid micronodules, 79 (76.7%) remained stable, 14 (13.6%) magnified and 10 (9.7%) shrunk during the follow-up. The cervical lymph nodes in all physical examiners were normal. There were significant changes in the maximum diameter and volume in the thyroid micronodules between the initial and last examination in subjects whose micronodules shrunk or magnified during the follow-up (all P<0.05). Conclusion:Size of most C-TIRADS 4C thyroid micronodules remains stable or even decreases during ultrasound follow-up observation, for such thyroid nodules, follow-up observation appears to be a safe and feasible way to postpone surgery.

Objective To study epigenetic diversity of Astragalus mongolicus by methylation-sensitive amplification polymorphism(MSAP)technique,and to establish and optimize the response system of MSAP technique applicable to Astragalus Mongolicus.Methods Astragalus membranaceus(Fisch.)Bge.var.mongholicus(Bge.)Hsiao was used as material.The single factor and orthogonal design method were used to optimize the key influencing factors of the reaction system of Astragalus Mongolian methylation-sensitive amplification polymorphism(MSAP)technique,and the best reaction system of Astragalus Mongolian MSAP was established.Results 0.5 μL each of EcoR I and Msp I/Hpa II were added to the 20 μL double-enzyme digestion reaction system,and the digestion was completed in a water bath at 37℃for 6 h to complete the digestion;the optimal ligation system was 25 μL,including 10 μL digestion product,0.2 μL T4 DNA Ligase,1 μL EcoR I-adapter,1 μL Hpa II/Msp I-adapter,2.5 μL 10×T4 Buffer;25 μL optimal pre-amplification reaction system,including 2.5 μL 10×PCR buffer,0.5 μL dNTP,2.0 μL ligation product,0.3 μL Taq DNA polymerase,1.0 μL upstream and downstream primers;25 μL optimal selective amplification system,including 2 μL 20-fold diluted pre-amplification product,1.0 μL 10×PCR buffer,1.0 μL dNTP,0.2 μL Taq DNA polymerase,0.8 μL primers.Conclusion The optimized MSAP system was detected by polyacrylamide gel electrophoresis,which showed that the polymorphism was good,the system was stable,the bands were clear and repeatable,which laid the foundation for the subsequent MSAP analysis of Astragalus mongolica.

Objective:To explore the distribution characteristics of brachial-ankle pulse wave velocity (BaPWV) in adolescents.Methods:Cross sectional survey research.A total of 1 607 adolescents aged 12-17 years from 5 middle schools in the Haidian District, Beijing from June 2020 to May 2021 were enrolled for measuring their blood pressure, weight, height and the body mass index (BMI), including 782 males and 825 females.BaPWV was measured using an arteriosclerosis detector.They were divided by the age, sex and obesity.Differences of measurement data among multiple groups were compared by one-way ANOVA, followed by the LSD test, and those between groups were compared by the two-sample t-test.The correlation between BaPWV and other indexes was assessed by the Pearson correlation analysis. Results:The median level of BaPWV in adolescents aged 12-17 years increased with age, which was 982.50 cm/s in adolescents aged 12 years, and maximum 1 113.50 cm/s those aged 17 years.BaPWV in adolescents aged 12-17 years was positively correlated with age ( r=0.936, P=0.006). Subgrouped by the sex, the median BaPWV of male and female adolescents aged 12 years was 962.25 cm/s and 997.50 cm/s, respectively, which reached 1 122.50 cm/s and 1 096.00 cm/s in those aged 17 years, respectively.BaPWV of male and female adolescents was positively correlated with the age ( r=0.903, P=0.014; r=0.945, P=0.004). In male adolescents, BaPWV was positively correlated the systolic and diastolic blood pressure, age, weight, height, BMI( r=0.308, P<0.001; r=0.289, P<0.001; r=0.478, P<0.001; r=0.190, P<0.001; r=0.315, P<0.001; r=0.109, P=0.002). In female adolescents, BaPWV also was positively correlated the systolic and diastolic blood pressure, age, weight, height, BMI( r=0.340, P<0.001; r=0.285, P<0.001; r=0.379, P<0.001; r=0.115, P=0.001; r=0.170, P=0.001; r=0.097, P=0.014). In the overall population, BaPWV was statistically significant between the obese and normal groups ( t=-3.428, P=0.001). No significant difference in BaPWV between male and female adolescents aged 12-13 years was identified ( t=0.123, P=0.902 ), but it was significantly lower in female adolescents aged 14-15 years and 16-17 years than those of age-matched males( t=2.315, P=0.021; t=2.152, P=0.032). Conclusions:The median BaPWV level in adolescents aged 12-17 years, increases with the age.Systolic blood pressure, diastolic blood pressure, body weight, BMI, age and height are positively correlated with BaPWV in adolescents.Obesity can increase the stiffness of blood vessels, which is influenced by the sex.

Objective:To analyze the relationship between transition shock of nursing interns and occupational cognition and coping styles, and explore the factors affecting the status quo of nursing interns transformation, so as to provide guidance for the development of nursing students to respond to clinical transition shock.Methods:A cross-sectional survey of nursing students in Hunan Province was conducted among nursing interns from 18 colleges and universities in Hunan Province by using the General Demographic Data Questionnaire and the Transition Shock of Newly Graduated Nurses Scale, the Nurses' Professional Cognitive Survey Scale, and the Simplified Coping Style Questionnaire. The collected data were processed by SPSS 18.0 software, and multivariate linear regression analysis was performed to analyze the influencing factors of the shock.Results:The overall scores of nursing students transition shock were (64.49±16.33) points, while the transition shock was negatively correlated with occupational cognition ( r=-0.433, P<0.01) and positive response ( r=-0.263, P<0.01). And the occupational cognition, proposed academic qualification, reason for choosing nursing profession and positive response were the main factors affecting the transition shock of nursing students ( P=0.00, R2=0.21). Conclusion:The transition shock of nursing students is at the middle level, and has a strong negative correlation with the nursing students' occupational cognition and positive response. School teachers and clinical instructors should pay attention to the confusion, suspicion and unclear feelings and experiences caused by the transition shock of nursing students, helping nursing students to improve their occupational cognition, and learning how to positively respond to the transition shock problem, thereby improving the quality of clinical internship teaching and training of nursing students.

Objective:To explore the protective cognition of the first batch of nurses against novel coronavirus pneumonia on apparatus-related stress injury, so as to provide reference for formulating and implementing relevant training and improving management measures.Methods:Using the phenomenological method of qualitative research, from January 20, 2020 to February 17, 2020, a half structured in-depth interview was conducted among the echelon nurses who completed the first batch of nurses against novel coronavirus pneumonia on apparatus-related stress injury. A total of 13 nurses in isolation wards were interviewed for the study.Results:Using the method of Colaizzi phenomenology to analyze the interview data, the related knowledge cognition was low, the identification of risk factors was limited, the risk assessment was not carried out, the treatment measures were not timely, the awareness of protection was lacking, the management training was not perfect, and the medical protection materials were not enough.Conclusion:The first batch of nurses to fight against novel coronavirus pneumonia had a low awareness of the prevention of medical device-related stress injury. Hospital managers should strengthen the training of related knowledge, improve management strategies, enhance the awareness of protection, and identify risk factors early, take preventive measures to ensure the safety and health of front-line medical staff in a timely manner.