OBJECTIVE To form an expert consensus on the clinical application of parenteral direct thrombin inhibitors （DTIs） in patients during the perioperative period. METHODS Led by Sichuan Academy of Medical Sciences & Sichuan Provincial People’s Hospital （the Affiliated Hospital of UESTC）， a multidisciplinary working group was established. Through literature review and the Delphi method， clinical questions related to the rational perioperative use of parenteral DTIs were identified. A structured design was adopted using the “Population-Intervention-Comparison-Outcome” framework； systematic searches were conducted in CNKI， Medline， Embase and other databases. Relevant evidence from randomized controlled trials and cohort studies was included and synthesized. Evidence quality was assessed using the Grades of Recommendations Assessment，Development and Evaluation （GRADE） approach， and recommendations were formulated through multiple rounds of Delphi surveys and expert consensus meetings. RESULTS &CONCLUSIONS Seven recommendations （each with an expert consensus rate exceeding 90%） on the use of parenteral DTIs in perioperative patients were developed. These recommendations specify drug selection， dosing ranges， key monitoring points， and safety management strategies for parenteral DTIs in various scenarios， including the perioperative period of ventricular assist device implantation， the perioperative period of cardiac surgery， perioperative patients with lower-extremity atherosclerotic disease， the perioperative period of percutaneous coronary intervention in patients with acute coronary syndrome， the perioperative period of carotid artery stenting in patients with carotid stenosis， the perioperative period of patients with right heart thrombosis， and patients who develop related thrombosis and dysfunction after a central venous catheter insertion. In addition， warning and management pathways for perioperative bleeding and thrombotic events were proposed. This expert consensus， which is formulated based on the best available evidence， provides evidence-based guidance for standardized and individualized use of parenteral DTIs in perioperative period.

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.

A 70-year-old male patient was admitted to a hospital on March 1,2024 due to"muscle soreness in his extremities for over a month".Diagnosis consideration:polymyalgia rheumatica(with a high likelihood,the possi-bility of a tumor needs to be excluded).The patient was treated with methylprednisolone.After discharge from the hospital,the patient's symptoms worsened due to self-withdrawal of medication(methylprednisolone treatment for 20 days),and developed fever and cough.He then revisited the hospital and was confirmed to have Legionella mar-ssiliensis infection through metagenomic sequencing of bronchoalveolar lavage fluid(nucleic acid of all microorga-nisms were extracted from the specimens and compared in the PMDB database to obtain species information of the suspected pathogenic microorganisms).Subsequently,the patient was treated with a combination of 0.75 g levo-floxacin intravenous infusion qd+0.1 g doxycycline enteric-coated capsules orally bid for anti-infective therapy.The patient's symptoms,such as cough and muscle pain,improved significantly after anti-inflammatory and anti-in-fective treatment,and he was discharged on March 18.As the first reported case of Legionella marssiliensis pulmo-nary infection in China,this case highlights that among the multiple species of Legionella,there is another bacte-rium that can infect the human body and cause disease.This case report is beneficial for improving medical staff's understanding on Legionella marssiliensis and providing reference for the diagnosis and treatment of future cases of Legionella marssiliensis infection.

Medical ultrasound technology is widely used for diagnosis and therapy in clinical practice.Ultrasound probes,which are directly contact with patients,pose a potential risk of pathogen transmission.This expert consen-sus was developed by a multidisciplinary team based on international guidelines,standards in China,and the results of a national survey,aiming to reduce the risk of healthcare-associated infection through standardizing reprocessing of medical ultrasound probes,and formulating consensus recommendations with the Delphi method.The consensus clarifies the reprocessing principles for three types of ultrasound probes of different infection risks:external-use ul-trasound probes,interventional percutaneous ultrasound probes,and internal-use ultrasound probes,puts forward systematic suggestions on the reprocessing standards and disinfection levels of ultrasound probe isolation covers and coupling agents,the reprocessing procedures and methods of ultrasound probes,as well as architectural layout and management of reprocessing,so as to provide a scientific prevention and control framework for ensuring ultrasound diagnosis and therapy safety.

Objective To search,evaluate and integrate the evidence on enteral nutrition management based on intra-abdominal pressure(IAP)in ICU patients so as to provide an evidence-based basis for a standardised clinical enteral nutrition management for ICU patients with abdominal hypertension.Methods According to the"6S"model,the systematic searches were conducted on CNKI,VIP,SinoMed,Wanfang,Cochrane Library,Medive,UpToDate,International Guidelines Collaboration,Scottish Intercollegiate Guidelines,PubMed,Ovid,Web of Science,Embase,NICE,American Society for Parenteral Enteral Nutrition,World Association for Parenteral Syndromes,European Society of Critical Care,European Society of Clinical Nutrition and Metabolism on the grading of enteral nutrition based on intra-abdominal pressure classification,including guidelines,clinical decision-making,expert consensus,systematic evaluations,summaries of evidence,and original studies closely related to the topic of this study,with a search timeframe up to 31st October 2023.Evidence was extracted and synthesised from the literature that met the quality criteria,taking into account clinical professional judgement.Results A total of 23 articles were retrieved,including four guidelines,one evidence summary,one systematic evaluation,four expert consensuses,six randomized controlled trials,one case-control study and six quasi-experimental studies.Through strict quality evaluation,evidence extraction and summarisation,seven themes with 28 pieces of best evidence were extracted,with IAP grading as the main topic.The themes included definition and grading of abdominal hypertension,IAP monitoring,assessment of target feeding volume,IAP grades I-IV.Conclusion This study summarises the best evidence on graded enteral nutrition management for ICU patients based on IAP.This evidence provides an effective scientific basis on clinical decision-making for ICU professionals.It aims to manage the enteral nutrition for ICU patients with intra-abdominal hypertension using a scientific nursing method,thereby improving the quality of nursing care.

The aging trend is intensifying currently,but there is still a lack of standardized diagnosis and treat-ment schemes for severe infections in elderly people.This paper focuses on the recommendations for immune-related clinical diagnosis and treatment routes as well as the idea of risk stratified diagnosis and treatment for elderly peo-ple,aiming to effectively prevent infectious diseases in elderly people and perform stratified management through systematic and scientific means of immune function monitoring and regulation,so as to enhance the standardized level of diagnosis and treatment as well as clinical treatment effect of infection in elderly people.

Objective:To explore the effect of concomitant amiodarone on the bleeding risk in atrial fibrillation patients treated with dabigatran etexilate.Methods:This study was a retrospective cohort study. The clinical data of hospitalized patients with atrial fibrillation who took dabigatran etexilate in Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology from July 1, 2022 to June 30, 2023 were collected. Patients were divided into concomitant amiodarone group and non concomitant amiodarone group according to whether they were treated with oral amiodarone. Propensity score matching (PSM) was performed at a 1∶1 ratio in patients between the 2 groups according to patient's gender, age, main basic diseases and the number of basic diseases, baseline liver and kidney function, dosage of dabigatran etexilate, etc. The incidence of bleeding events was compared between the 2 groups.Results:A total of 878 patients were included in the study, including 568 males (64.7%) and 310 females (35.3%), with a age of 67 (59, 74) years. There were 252 patients (28.7%) in the concomitant amiodarone group and 626 patients (71.3%) in the non concomitant amiodarone group. Within 3 months of follow-up, the incidence of bleeding events in patients of concomitant and non concomitant amiodarone groups were 19.0% (48/252) and 21.2% (133/626), respectively, which were 19.0% (48/252) and 16.7% (40/239) after PSM, respectively, with no significant difference (all P>0.05). The main type of bleeding in patients of both groups was mild bleeding events [62.5% (30/48) vs. 67.5% (27/40)], and bleeding was more common in the gums, skin, and nose. There was no statistically significant difference in incidence of the bleeding types and bleeding sites of patients between the 2 groups (all P>0.05). Conclusions:Compared with patients with atrial fibrillation when treated with dabigatran etexilate and without concomitant amiodarone, the bleeding risk of patients with amiodarone did not significantly increased in the short term. The bleeding events during treatment of dabigatran etexilate were mainly mild bleeding, but clinical vigilance was still necessary.

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 develop a method for rapidly identifying Clostridioides difficile(C.difficile)and de-termining high-producing toxin strains,conduct clinical evaluation.Methods The loop-mediated isothermal amplifi-cation(LAMP)method was used to identify C.difficile based on the tcdC,tcdA,and tcdB genes.The sensitivi-ty,specificity,and overall consistency of the detection method were evaluated.Results Feces specimens from 499 hospitalized patients suspected of C.difficile-associated diarrhea were detected,with C.difficile detection rate of 12.8％(64/499),out of which the detection rate of toxin-producing C.difficile was 10.8％(54/499).The sensi-tivity,specificity,positive predictive value,and negative predictive value of the detection method for tcdA were 87.2％,98.9％,89.1％,and 98.6％,respectively,and 88.2％,99.6％,90.0％,and 98.73％for tcdB,respec-tively.The total toxin levels of different strains were different,but the average toxin production level of A+B+strains(1.79 μg/mL)was higher than those of A-B+strains(0.72 μg/mL)and A-B-strains(＜0.10 μg/mL).Conclusion The portable high-throughput LAMP detection method can rapidly and efficiently identify C.difficile and determine high-producing toxin strains.

Creutzfeldt-Jakob disease(CJD)is a rapidly progressive and fatal neurodegenerative disorder caused by prions,with certain infectivity and iatrogenic transmission risks.With the rapid progress and application of new dia-gnostic biomarkers and detection methods,as well as the construction and improvement of surveillance and reporting systems,the detection of CJD in patients domestically and internationally has shown an increasing trend year by year.Due to its long incubation period and heterogeneity of early symptoms,early identification and diagnosis of the disease is difficult,increasing the risk of transmission within medical institutions.Currently,there is a lack of con-sensus on the infection prevention and control of CJD.In order to timely identify and diagnose CJD as well as effec-tively block its transmission in medical institutions,this consensus summarizes 15 clinical concerns and formulates 24 specific recommendations based on the latest domestic and international research findings and clinical evidence,as well as combines with clinical practice,aiming to standardize healthcare-associated infection prevention and control measures for CJD and reduce its transmission risk in medical institutions.