Objective To analyze the influence of different processing methods,including frying,ginger frying,and salt frying,on the volatile components of A.fructus.Methods The volatile components in different processed products of A.fructus were detected and analyzed by gas chromatography-mass spectrometry(GC-MS)based on multivariate statistical analysis.After OPLS-DA analysis,the different components were screened under the conditions of VIP＞1.5 and P＜0.05 and were qualitatively searched using the NIST 11 spectral library.Results A total of 49 different components were identified,with 14 components only changing in the seed mass and 22 components changing in the peel.The content of camphor could be significantly reduced in the seed mass after A.fructus was processed and the content of bornyl acetate significantly increased in the peel of frying A.fructus.Salt frying had a great influence on the alkanes in A.fructus,and ginger processing did not only increase the volatile components in ginger,which reflected the complexity of the processing mechanism.Conclusion At present,the specific processing mechanism is not clear,but the experimental results provide theoretical data for the "detoxification and efficiency enhancement" effect of A.fructus processing,reflecting the scientific nature of the processing,enriching the processing theory of A.fructus,and providing a reference for further in-depth research on the activity of different processed products of A.fructus.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective:To investigate the diagnostic value of nucleic acid matrix-assisted laser desorption ionization-time of flight mass spectrometry（MALDI-TOF MS）in sputum smear-negative patients with nontuberculous Mycobacterial（NTM）pulmonary disease.Methods:Clinical data of 123 patients suspected of NTM pulmonary disease admitted in Public Health Clinical Center Affiliated to Shandong University between July 2022 and November 2023 were retrospectively analyzed. Bronchoalveolar lavage fluid（BALF）specimens were collected for MALDI-TOF MS assay and MGIT 960 culture. The diagnostic efficacy of MALDI-TOF MS for NTM pulmonary disease in patients with negative sputum smears for acid-fast bacilli was evaluated with receiver operating characteristic（ROC）curve. Statistical analysis was performed using SPSS 26.0 software and MedCalc statistical software.Results:Diagnosis of NTM pulmonary disease was finally confirmed in 66 out of the 123 suspected patients. It took 8 to 24 h for MALDI-TOF MS to identify NTM species and resistance. By MALDI-TOF MS，72 NTM strains were identified，with the Mycobacterium avium complex being the most prevalent（34 strains，47.22%），followed by the Mycobacterium abscessus complex（13 strains，18.06%）；resistance to macrolides was detected in 6 cases，while no resistance to aminoglycosides was found. It took 9 to 45 days for BALF MGIT 960 culture to identify NTM，and took 7 to 15 days for NTM typing and drug sensitivity testing. By BALF MGIT 960 culture，28 NTM strains were identified；and 1 case was found to be resistant to macrolides. Using confirmed diagnosis as the gold standard，MALDI-TOF MS demonstrated higher sensitivity，negative predictive value，and agreement rate compared to MGIT 960 culture（84.85% vs. 42.42%，81.13% vs. 56.32%，80.49% vs. 62.60%， χ2=25.667，8.998，9.664， P<0.05 or <0.01）. The area under ROC curve（AUC）for MALDI-TOF MS was significantly higher than that of MGIT 960 culture（0.801 vs. 0.642， Z=3.300， P=0.001）. Conclusion:Compared to MGIT 960 culture，MALDI-TOF MS exhibits superior diagnostic efficiency in detecting NTM pulmonary disease in patients with acid-fast bacilli smear-negative sputum，with advantage of rapidly identifying NTM species and resistance.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective To analyze the effect of Mortality and Morbidity Conferences(MMC)in the prevention and treatment of hospital-related venous thromboembolism(VTE),and to provide a reference forthe implementation of prevention and treatment measures of VTE in hospitals.Methods Two MMC implemented in August-September 2023 at a tertiary genera l hospita l in Beijing were selected,and rainstorming and root cause analysis were used to profile two cases selected at the meetings that were highly suspected to have died from acute pulmonary embolism.Results Insufficient awareness of VTE,insufficient sensitivity to the diagnosis of VTE,inadequate management of adverse events and failure to establish a VTE risk assessment process are the root causes of hospital-related VTE events.Conclusion Hospitals should establish a management organisational structure for the prevention and treatment of VTE,carry out VTE training on a regular basis,set up a VTE information system,define a standardised VTE risk assessment process,and enhance the sensitivity of the medical staff to the patient's abnormalities.

Objective:To analyze the genetic evolution characteristics of hemagglutinin (HA) and neuraminidase (NA) of influenza B virus in Tongling during 2019-2022 surveillance years.Methods:Twenty-two strains of Victoria influenza B virus isolated from our laboratory during 2019-2022 were selected for whole genome sequencing. The sequence comparison and phylogenetic analysis were conducted by using bioinformatic analysis software.Results:During 2019-2022, seasonal influenza in Tongling City was predominantly caused by influenza B Victoria lineage viruses, which fell within the V1A.3 branch. Among these, 14 strains isolated in the 2021-2022 season were further classified into the V1A.3a.2 sub-branch. Compared with vaccine strains, multiple amino acid mutation sites were detected in both HA and NA proteins of the 22 influenza B Victoria lineage viruses. Notably, all four major antigenic sites (120-loop, 150-loop, 160-helix, and 190-helix regions) in the HA protein exhibited variations. Although no mutations were detected at resistance sites on the NA protein, a change occurred in the glycosylation site at position 197 NETQ in the HA protein.Conclusions:The main amino acid sites of the HA protein of the influenza B Victoria lineage viruses in Tongling City from 2019 to 2022 have undergone significant variation, which may lead to antigenic drift. Therefore, it is essential to strengthen the monitoring of influenza virus mutations.