Objective To understand the current situation of healthcare-associated infection(HAI)in China,pro-vide data support and decision-making basis for formulating scientific and effective strategies for HAI prevention and control.Methods A nationwide cross-sectional survey on HAI was conducted among various types and levels of medical institutions in China according to a unified protocol of bedside surveys and case investigations.Results In 2024,a total of 5 736 medical institutions and 2 751 765 patients were surveyed.Among them,34 889 HAI cases were identified,with a prevalence rate of 1.27％.The number of HAI episodes was 38 032,and case prevalence rate was 1.38％.The prevalence rate of HAI in medical institutions in different regions of China ranged from 0.66％to 2.35％.Among medical institutions of different scales,those with a bed capacity of ≥900 had the high-est incidence of HAI,reaching 1.65％.The most common infection site was the lower respiratory tract(44.66％),followed by the urinary tract(12.94％),surgical site(9.32％),upper respiratory tract(7.02％),and bloodstream infection(5.78％).The top 3 departments with the highest HAI rates were the general intensive care unit(10.02％),department of neurosurgery(5.51％),and department(group)of hematology(5.34％).A total of 23 238 strains of HAI pathogens were detected,with 10 714 strains(46.10％)from lower respiratory tract speci-mens.The top 5 detected strains were Klebsiella pneumoniae(14.76％),Pseudomonas aeruginosa(13.33％),Escherichia coli(12.79％),Acinetobacter baumannii(9.23％),and Staphylococcus aureus(7.88％).231 944 pa-tients underwent class Ⅰ incision surgery were monitored,with 1 647 cases experienced surgical site infection,and the prevalence rate of surgical site infection was 0.71％.The number of patients who should undergo pathogen de-tection(patients receiving therapeutic and therapeutic combined prophylactic antimicrobial agents)was 715 179,while the actual number was 480 492,with a pathogen detection rate of 67.18％.425 225 patients received patho-genic detection before treatment,with a detection rate of 59.46％.Conclusion The overall HAI prevalence in Chi-na is lower,showing disparities among medical institutions of different regions and scales.Therefore,precise imple-mentation of measures is necessary for HAI prevention and control,with a focus on high-risk institutions and high-risk departments,key areas,and critical procedures.All levels of medical institutions should continuously reduce the incidence of HAI by strengthening monitoring,standardizing the use of antimicrobial agents,and reinforcing basic HAI prevention and control measures.

Objective To understand the current situation of healthcare-associated infection(HAI)in China,pro-vide data support and decision-making basis for formulating scientific and effective strategies for HAI prevention and control.Methods A nationwide cross-sectional survey on HAI was conducted among various types and levels of medical institutions in China according to a unified protocol of bedside surveys and case investigations.Results In 2024,a total of 5 736 medical institutions and 2 751 765 patients were surveyed.Among them,34 889 HAI cases were identified,with a prevalence rate of 1.27％.The number of HAI episodes was 38 032,and case prevalence rate was 1.38％.The prevalence rate of HAI in medical institutions in different regions of China ranged from 0.66％to 2.35％.Among medical institutions of different scales,those with a bed capacity of ≥900 had the high-est incidence of HAI,reaching 1.65％.The most common infection site was the lower respiratory tract(44.66％),followed by the urinary tract(12.94％),surgical site(9.32％),upper respiratory tract(7.02％),and bloodstream infection(5.78％).The top 3 departments with the highest HAI rates were the general intensive care unit(10.02％),department of neurosurgery(5.51％),and department(group)of hematology(5.34％).A total of 23 238 strains of HAI pathogens were detected,with 10 714 strains(46.10％)from lower respiratory tract speci-mens.The top 5 detected strains were Klebsiella pneumoniae(14.76％),Pseudomonas aeruginosa(13.33％),Escherichia coli(12.79％),Acinetobacter baumannii(9.23％),and Staphylococcus aureus(7.88％).231 944 pa-tients underwent class Ⅰ incision surgery were monitored,with 1 647 cases experienced surgical site infection,and the prevalence rate of surgical site infection was 0.71％.The number of patients who should undergo pathogen de-tection(patients receiving therapeutic and therapeutic combined prophylactic antimicrobial agents)was 715 179,while the actual number was 480 492,with a pathogen detection rate of 67.18％.425 225 patients received patho-genic detection before treatment,with a detection rate of 59.46％.Conclusion The overall HAI prevalence in Chi-na is lower,showing disparities among medical institutions of different regions and scales.Therefore,precise imple-mentation of measures is necessary for HAI prevention and control,with a focus on high-risk institutions and high-risk departments,key areas,and critical procedures.All levels of medical institutions should continuously reduce the incidence of HAI by strengthening monitoring,standardizing the use of antimicrobial agents,and reinforcing basic HAI prevention and control measures.

Objective To investigate the value of emergency physician-led focused assessment with sonography for trauma(FAST)combined with serum C-reactive protein(CRP),procalcitonin(PCT),and interleukin-6(IL-6)testing in predicting the clinical outcome of patients with acute chest and abdominal trauma.Methods Ninety-six patients with acute thoracoabdominal trauma,who had been admitted to the Department of Emergency in our hospital from February 2019 to February 2022,were selected for this study.The patients were grouped according to their clinical outcomes,with the individuals who died after 48 h of treatment classified to the death group(n = 14)and all the others to the survival group(n = 82).The general clinical indicators(sex,age,body mass,trauma type,smoking history,alcohol consumption history,and previous chest and abdominal surgery history),CRAMS scores,inferior vena cava-collapse index(IVC-CI),and serum CRP,PCT,and IL-6 levels at 0,24,and 48 h after admission were compared between the two groups.Logistic regression analysis was used to identify the factors that influence the outcomes of patients with acute thoracoabdominal trauma based on statistically significant differences(P＜0.05)between the two groups.Receiver operating characteristic(ROC)curves of the IVC-CI combined with serum CRP,PCT,and IL-6 detection were plotted to evaluate the value in predicting clinical outcomes.Results The serum CRP,PCT,and IL-6 levels,CRAMS score,and IVC-CI in the death group were higher than those in the survival group at 0,24,and 48 h after admis-sion(all P＜0.001).The serum CRP,PCT,and IL-6 levels in patients in the death group gradually increased from 0,24,and 48 h after admission,and the differences between each time point were statistically significant(all P＜0.05).In the patients in the survival group,these serum protein levels increased from 0 to 24 h after admission and peaked at 48 h,and the differences between each time point were statistically significant(all P＜0.05).The logistic regression analysis showed that the CRAMS score,IVC-CI,and serum CRP,PCT,and IL-6 levels were risk factors affecting the outcome of patients with acute chest and abdominal trauma(all P＜0.05).The area under the ROC curve for the IVC-CI combined with serum CRP,PCT,and IL-6 detection was greater than that for each individual assessment type alone(all P＜0.05),and the use of the IVC-CI combined with serum CRP,PCT,and IL-6 detection to predict the clinical outcome of patients with acute chest and abdominal trauma had net clinical benefit.Conclusion The IVC-CI and serum CRP,PCT,and IL-6 levels were associ-ated with the clinical outcomes of patients with acute thoracoabdominal trauma.Therefore,emergency physician-led bedside ultrasound FAST combined with 48 h serum CRP,PCT,and IL-6 testing has good value for predicting the clinical outcomes of patients with acute chest and abdominal trauma.

Objective To analyze risk factors and complication characteristics of healthcare-associated infection (HAI)in patients with lung cancer,and provide evidence for the formulation of HAI management strategy. Methods HAI-related articles were retrieved from China Biology Medicine (CBM),China National Knowledge Infrastructure (CNKI),Wanfang database,Vip database,PubMed,and Embase,all data were conducted Meta-analysis.Results A total of 19 articles involving 8 069 hospitalized patients with lung cancer (1 280 had HAI)were included.Meta-analysis on combined values of medical factors for HAI were as follows:OR(95%CI )of anti-tumor therapy(radiotherapy and chemotherapy),number of chemotherapy (≥ 2 times ),antimicrobial prophylaxis, immunosuppressant therapy,and invasive operation were 3.13 (1 .82,5.39),9.20 (3.04,27.87),3.23 (1 .77, 5.91),2.00(1 .56,2.57),and 2.28(1 .81 ,2.88),respectively;Meta-analysis on combined values of complication factors for HAI were as follows:OR (95% CI )of pulmonary diseases,chronic obstructive pulmonary disease (COPD),diabetes,renal dysfunction,malnutrition,hypoalbuminemia,neutropenia,and leukopenia were 2.65 (1 .74,4.02),2.40 (1 .76,3.27),2.25 (1 .85,2.73 ),2.56 (1 .18,5.52),5.51 (1 .70,17.89),2.05 (1 .56, 2.70),3.38(1 .40,8.18),and 2.10 (1 .22,3.62),respectively.Conclusion HAI-related factors of medical treat-ment and complications in patients with lung cancer are diversity,risk factors for HAI in patients with lung cancer are anti-tumor therapy,immunosuppressant therapy,antimicrobial prophylaxis,invasive operation,pulmonary dis-eases,COPD,diabetes,renal dysfunction,malnutrition,hypoalbuminemia,neutropenia,and leucopenia.

Objective To provide the evidences for the management strategies of ventilator-associated pneumonia (VAP) in neonates,we systematically reviewed all related studies and analyzed the high-risk primary disease and medical factors of VAP in neonates.Methods We retrieved all related studies in CNKI,Wanfang,VIP,CBM,Pubmed and Embase and evaluated their quality by Newcastle-Ottawa Scale and analyzed all data by qualitative and Meta-analysis.Results There were 12 case-control studies with higher methodological quality and involving 1 994 neonates and with 708 VAP patients.Six studies involving 872 neonates were included,the odds ratio of respiratory distress syndrome(OR=2.81) and malnutrition(OR=5.18) had significant differences between VAP and non-VAP group.Seven studies involving 1 110 neonates were included and the odds ratio of patients with corticosteroids (OR=3.12),central inhibitors (OR=2.31),antacids (OR=4.35) and Gamma globulin with large doses (OR=2.35) had significant differences between VAP group and non VAP.Four studies involving 554 neonates were included and the odds ratio of patients with closed chest drainage (OR=1.81)and umbilical vein catheterization (OR=9.19) had significant differences between VAP group and non VAP.Six studies involving 1 139 neonates were included and the odds ratio of patients with parenteral nutrition (OR=1.82)and blood transfusions (OR=2.49) had significant differences between VAP group and non VAP.Conclusions Our study confirms that the respiratory distress syndrome and malnutrition corticosteroids,central inhibitors,antacids,Gamma globulin with large doses,closed chest drainage,umbilical vein catheterization,parenteral nutrition and blood transfusions are important risk and early-warning factors.

OBJECTIVETo investigate the role ofCD4+CD25+ T regulatory (Treg) cells, T helper (Th)17cells and interleukin (IL)-6 in the progression of hepatitis B virus (HBV)-related acute-on-chronic liver failure (ACLF) and determine their value as prognostic markers.

METHODSThe Chinese National Knowledge Infrastructure (CNKI), WanFang, Chinese Scientific Journals (VIP), PubMed, Embase and Web of Science databases were searched for English language case-control studies on the relationship between regulatory T lymphocytes and ACLF.The quality of included studies was assessed using the Newcastle-Ottawa scale. The meta-analysis was designed according to the PICOS approach recommended by the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement. RevMan software, version 5.1, was used to perform the meta-analysis.

RESULTSNine case-cohort studies were selected for inclusion in the metaanalysis.The results of the meta-analyses showed that the level of CD4+CD25+ Treg cells was not significantly different between patients with HBV-related ACLF and patients with chronic hepatitis B (CHB) (mean difference (MD)=0.59, 95% confidence interval (CI)-1.68, 2.85, P=0.61) nor between patients with HBVrelated ACLF and healthy controls (MD=1.12, 95% CI:-1.42, 3.66, P=0.39). Thus, it appears that ACLF patients do not have a higher level of CD4+CD25+ Treg cells than CHB patients or healthy controls. However, the ACLF patients did appear to have a significantly higher level of Th17 cells than both the CHB patients (MD=1.73, 95% CI:0.21, 3.26, P=0.03) and the healthy controls (MD=1.62, 95% CI:(0.52, 2.72, P=0.004). In addition, the ACLF patients also had significantly higher level than both the CHB patients (MD=11.69, 95%CI:1.98, 21.40, P=0.02) and the healthy controls (MD=13.17, 95% CI:1.38, 24.95, P=0.03).

CONCLUSIONCD4+CD25+ Treg cells may be an important protective factor in the progression and prognosis of HBV-related ACLF, while Thl7 cells and IL-6 may be risk factors for further progression and worsened prognosis.

Acute-On-Chronic Liver Failure ; diagnosis ; immunology ; CD8-Positive T-Lymphocytes ; Case-Control Studies ; Disease Progression ; Hepatitis B virus ; Hepatitis B, Chronic ; complications ; Humans ; Interleukin-6 ; immunology ; Prognosis ; T-Lymphocytes, Regulatory ; immunology ; Th17 Cells ; immunology