1.Dosimetric comparison of the heart and its substructures between two hybrid radiotherapy plans following breast-conserving surgery for left-sided breast cancer
Lin GUO ; Hongrong REN ; Meng CHEN ; Chengjun WU ; Yun ZHOU ; Xiaobo RUAN ; Ji DING ; Weiyuan WU
Chinese Journal of Radiological Health 2025;34(2):174-178
Objective To compare the dosimetric differences in the heart and its substructures between two hybrid plans for hypofractionated whole-breast radiotherapy after breast-conserving surgery in patients with early-stage left-sided breast cancer. Methods A total of 46 patients with early-stage left-sided breast cancer who underwent hypofractionated whole-breast radiotherapy were randomly selected. Two hybrid radiotherapy plans were used, including hybrid intensity-modulated radiotherapy (H_IMRT) and hybrid volumetric-modulated arc therapy (H_VMAT). The heart and its substructures were contoured, including left anterior descending (LAD), left ventricle (LV), right coronary artery (RCA), and right ventricle (RV). The heart and substructure doses, as well as monitor units, were compared between H_IMRT and H_VMAT. Results Both hybrid plans met the clinical requirements. H_IMRT significantly outperformed H_VMAT for the heart (V10, V30, and Dmean), LAD (V30, V40, Dmax and Dmean), LV (V10, V20 and Dmean), RCA (Dmax, Dmean), and RV (V5, V10, Dmean) (P < 0.001). Additionally, H_IMRT was significantly superior to H_VMAT for heart V5, LAD V20, and RV V20 (P = 0.005, 0.035 and 0.037). For LAD (V15, V40) and LV (V5, V25), H_IMRT was slightly better than H_VMAT, and the difference was not statistically significant. Conclusion Both H_IMRT and H_VMAT hybrid radiotherapy plans are suitable for hypofractionated whole-breast radiotherapy after breast-conserving surgery in patients with early-stage left-sided breast cancer. H_IMRT is slightly better than H_VMAT in dose sparing for the heart and its substructures.
2.Application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms: a scoping review
Xiaobo REN ; Changyun WEI ; Yiru WANG ; Yu LIU ; Yongling LIU ; Zirong TIAN
Chinese Journal of Modern Nursing 2025;31(34):4636-4642
Objective:To summarize the application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms.Methods:Following the scoping review framework of Arksey and O'Malley, literature on the application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms was electronically retrieved from databases including the Cochrane Library, Embase, PubMed, Web of Science, CINAHL, IEEE Xplore, China Biology Medicine disc, Wanfang Data, and China National Knowledge Infrastructure. The search period was from database establishment to August 5, 2025.Results:A total of 21 articles were included. Types of head and neck neoplasms included oropharyngeal cancer, nasopharyngeal cancer, oral cancer, tongue cancer, laryngeal cancer, hypopharyngeal cancer, and others. The application forms of digital health technologies involved virtual reality technology, telemedicine systems, interactive mobile health APPs/digital health platforms, and wearable devices. Interactive mobile health apps/digital health platforms were currently the most widely adopted form, with some applications integrating wearable devices for physiological data monitoring. The main components of the intervention included guiding swallowing training methods, training monitoring/supervision and feedback, swallowing function screening/assessment, and health education.Conclusions:The application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms is still in its early stages, but its advantages in enhancing rehabilitation accessibility and promoting patient adherence have already begun to emerge. Nevertheless, it also faces challenges such as limited user-friendliness, insufficient personalized feedback, and a lack of humanistic care. It is necessary to further explore and develop personalized, precision-oriented intelligent swallowing rehabilitation systems tailored to the specific needs of swallowing rehabilitation for head and neck cancer patients. High-quality clinical studies should be conducted to validate long-term efficacy, thereby providing intelligent solutions for clinical nursing practices in swallowing rehabilitation for these patients.
3.Construction and application of an esophageal language rehabilitation program for patients after total laryngectomy based on the behavioral change wheel theory
Li LI ; Yongling LIU ; Yang ZHANG ; Zirong TIAN ; Xiuya LI ; Xiaoting JIN ; Xiaobo REN ; Fang NAN ; Yiran HE
Chinese Journal of Practical Nursing 2025;41(7):487-497
Objective:To construct an esophageal language rehabilitation program for patients after total laryngectomy (TL) based on the behavioral change wheel theory and exploring its application effects.Methods:The multidisciplinary team constructed the first draft of the esophageal language rehabilitation program for patients after TL based on the behavioral change wheel theory, combined with a literature review, and used an expert meeting to revise the rehabilitation program to form the final draft of the program. Adopting experimental research, 35 patients after TL who attended the nursing outpatient clinic of Beijing Tongren Hospital, Capital Medical University from February 2023 to May 2023 were selected as the control group by convenience sampling method, and 35 patients after TL who attended the nursing outpatient clinic from June 2023 to September 2023 were selected as the experimental group. The experimental group applied the TL postoperative patients′ esophageal language rehabilitation program based on the behavioral change wheel theory on the basis of conventional nursing measures, and the control group received conventional nursing care. The status of language rehabilitation training, quality of life, social behavioral status, and anxiety and depression status before intervention, 1, 3, 6 months after intervention were compared between the two groups.Results:Both groups of patients completed the study. There were 29 males and 6 females in the control group, with an age of (54.63 ± 10.44) years old. There were 34 males and 1 female in the experimental group, with an age of (55.17 ± 10.67) years old. There was no statistically significant difference in the language rehabilitation training status, quality of life, social behavior status, and anxiety and depression status between the two groups before intervention (all P>0.05). The total scores of speech rehabilitation training in the experimental group at 1, 3, and 6 months after intervention were (32.80 ± 2.49), (39.80 ± 2.75), (51.91 ± 4.20) points, respectively, which were higher than those in the control group (23.40 ± 3.42), (24.40 ± 3.42), (25.80 ± 3.42) points, and the differences were statistically significant ( t=14.53, 23.44, 32.70, all P<0.05). The total scores of quality of life in the experimental group at 1, 3, and 6 months after intervention were (98.91 ± 8.49), (134.66 ± 11.31), (157.97 ± 13.97) points, respectively, which were higher than those in the control group (67.06 ± 7.64), (72.16 ± 7.64), (99.46 ± 8.09) points, and the differences were statistically significant ( t=17.53, 30.16, 21.45, all P<0.05). The scores for social occasion diet and language comprehension in the experimental group at 1, 3, and 6 months after intervention were (40.41 ± 13.94), (40.43 ± 24.08), (40.60 ± 18.56), and (43.71 ± 12.26), (47.40 ± 17.09), (52.50 ± 13.82), respectively, which were higher than those in the control group (30.59 ± 15.98), (30.57 ± 18.28), (27.21 ± 15.27), and (27.29 ± 15.13), (23.60 ± 14.78), (19.50 ± 12.78), and the differences were statistically significant ( t values were -6.88-2.16, all P<0.05). The total scores of anxiety and depression in the experimental group at 1, 3, and 6 months after intervention were (23.74 ± 2.73), (14.89 ± 3.89), (12.11 ± 3.14) points, respectively, which were lower than those in the control group (32.63 ± 1.85), (30.63 ± 1.85), (24.80 ± 2.75) points, and the differences were statistically significant (t=-19.55, -27.10, -17.97, all P<0.05). Conclusions:The esophageal language rehabilitation program for patients after TL based on the behavioral change wheel theory in this study is scientific, feasible, and can improve the patients′ esophageal language expression, quality of life, anxiety and depression, and social behavioral status, which can provide a reference for clinical care.
4.Investigation of major pathogens carried by rodents in the high-altitude areas of western Sichuan
Shihao LI ; Bang FU ; Jiarong REN ; Zihang WANG ; Xiuping SONG ; Xinyue FANG ; Ying LIANG ; Liang LU ; Xiaobo LIU ; Qiyong LIU
Chinese Journal of Zoonoses 2025;41(8):879-886
This study investigated the types and distribution of rodents,and the infection status of eight pathogens in the high-altitude areas of western Sichuan,to provide a basis for control of rodent-borne diseases and pathogen surveillance in rodents in the area.From August to November of 2023,rodents were captured through the night method in high-altitude areas of western Sichuan.Nucleic acids were collected from the rodents'livers and lungs,and eight important pathogens were detected:Dabie bandavirus,Han-tavirus,Bartonella,Francisella tularensis,Anaplasma phagocytophilum,Rickettsia mooseri,Orientia tsutsugamushi,and Leptospira interrogans.The chi-square test was used to compare the composition ratios of rodent species and the difference in pathogen positivity rates among groups.A total of 114 rodents of nine species were captured.The dominant species in this area were Apodemus agrarius(22.81%),Apodemus chevrieri(18.42%),Niviventer confucianus(17.54%),Apodemus latronum(16.67%),and Apodemus peninsu-lae(13.16%).Other rodent species included Rattus nitidus(4.39%),Neodon irene(4.39%),Chodsigoa hypsibia(1.75%),and Nivi-venter excelsior(0.88%).Statistically significant differences in rodent species composition were observed among regions,altitudes,and habitats(χ2Region=112.358,P<0.05;χ2Altitude=96.843,P<0.05;χ2Habitat=48.842,P<0.05).The liver and lung pathogen results showed that the positivity rate of Bartonella was highest(29/114),whereas those of the other seven pathogens were 0%-4.39%.Five rodents were co-infected with two or more pathogens,and the composite positivity rate was 4.36%(5/114).Statistically significant differences in the positivity rates were observed for Leptospira interrogans among species(χ2=6.568,P=0.028)and Anaplasma phagocytophilum among habitats(χ2=7.596,P=0.027);however,no significant differences in the positivity rates of other pathogens were found among rodent species,regions,altitudes,habitats,and sexes(P>0.05).Thus,rodent species were abundant in the high-altitude areas of western Sichuan and carried a variety of pathogens.Multiple pathogens showed compound infections,among which the positivity rate of Bartonella was relatively high.The total infection rate of pathogens in living areas was relatively high,and the risk of pathogenesis to the population is greater.Therefore,rodent control and disease monitoring efforts should be strengthened.
5.Cluster analysis-based classification of neck and shoulder function characteristics in patients after neck lymph node dissection for head and neck tumors
Miao SHANG ; Zirong TIAN ; Xue LIU ; Changyun WEI ; Xiaobo REN
Chinese Journal of Modern Nursing 2025;31(12):1642-1649
Objective:To identify the classification of neck and shoulder dysfunction in patients after neck lymph node dissection for head and neck tumors and analyze the characteristics of these dysfunctions.Methods:A convenience sampling method was used to select patients who underwent neck lymph node dissection and visited the Head and Neck Cancer Rehabilitation Nursing Clinic at Beijing Tongren Hospital, Capital Medical University, from March to May 2024. General data questionnaires, neck function indicators, and shoulder function symptom questionnaires were used for investigation.Results:A total of 113 patients who underwent neck lymph node dissection for head and neck tumors were included in the study. The top three neck dysfunction indicators with the highest occurrence rates were abnormal neck extension (87.6%, 99/113) , abnormal neck bending on the affected side (84.1%, 95/113) , and abnormal neck rotation on the affected side (84.1%, 95/113) . The top three shoulder dysfunction indicators with the highest occurrence rates were: abnormal shoulder flexion on the affected side (83.2%, 94/113) , abnormal shoulder abduction on the affected side (81.4%, 92/113) , and abnormal horizontal shoulder abduction on the affected side (80.5%, 91/113) . Using 18 indicators of neck and shoulder dysfunction as clustering variables, patients were classified into three groups: severe dysfunction group (53.1%, 60/113) , moderate dysfunction group (35.4%, 40/113) , and mild dysfunction group (11.5%, 13/113) . The differences in disease type and neck and shoulder function indicators between the three groups were statistically significant ( P<0.05) . Conclusions:Neck and shoulder dysfunction in patients after neck lymph node dissection for head and neck tumors is relatively severe, primarily manifesting as an abnormal range of motion. Healthcare providers should strengthen neck and shoulder function assessments in these patients and consider a range of motion exercises as a key rehabilitation program.
6.Application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms: a scoping review
Xiaobo REN ; Changyun WEI ; Yiru WANG ; Yu LIU ; Yongling LIU ; Zirong TIAN
Chinese Journal of Modern Nursing 2025;31(34):4636-4642
Objective:To summarize the application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms.Methods:Following the scoping review framework of Arksey and O'Malley, literature on the application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms was electronically retrieved from databases including the Cochrane Library, Embase, PubMed, Web of Science, CINAHL, IEEE Xplore, China Biology Medicine disc, Wanfang Data, and China National Knowledge Infrastructure. The search period was from database establishment to August 5, 2025.Results:A total of 21 articles were included. Types of head and neck neoplasms included oropharyngeal cancer, nasopharyngeal cancer, oral cancer, tongue cancer, laryngeal cancer, hypopharyngeal cancer, and others. The application forms of digital health technologies involved virtual reality technology, telemedicine systems, interactive mobile health APPs/digital health platforms, and wearable devices. Interactive mobile health apps/digital health platforms were currently the most widely adopted form, with some applications integrating wearable devices for physiological data monitoring. The main components of the intervention included guiding swallowing training methods, training monitoring/supervision and feedback, swallowing function screening/assessment, and health education.Conclusions:The application of digital health technology in swallowing rehabilitation for patients with head and neck neoplasms is still in its early stages, but its advantages in enhancing rehabilitation accessibility and promoting patient adherence have already begun to emerge. Nevertheless, it also faces challenges such as limited user-friendliness, insufficient personalized feedback, and a lack of humanistic care. It is necessary to further explore and develop personalized, precision-oriented intelligent swallowing rehabilitation systems tailored to the specific needs of swallowing rehabilitation for head and neck cancer patients. High-quality clinical studies should be conducted to validate long-term efficacy, thereby providing intelligent solutions for clinical nursing practices in swallowing rehabilitation for these patients.
7.Investigation of major pathogens carried by rodents in the high-altitude areas of western Sichuan
Shihao LI ; Bang FU ; Jiarong REN ; Zihang WANG ; Xiuping SONG ; Xinyue FANG ; Ying LIANG ; Liang LU ; Xiaobo LIU ; Qiyong LIU
Chinese Journal of Zoonoses 2025;41(8):879-886
This study investigated the types and distribution of rodents,and the infection status of eight pathogens in the high-altitude areas of western Sichuan,to provide a basis for control of rodent-borne diseases and pathogen surveillance in rodents in the area.From August to November of 2023,rodents were captured through the night method in high-altitude areas of western Sichuan.Nucleic acids were collected from the rodents'livers and lungs,and eight important pathogens were detected:Dabie bandavirus,Han-tavirus,Bartonella,Francisella tularensis,Anaplasma phagocytophilum,Rickettsia mooseri,Orientia tsutsugamushi,and Leptospira interrogans.The chi-square test was used to compare the composition ratios of rodent species and the difference in pathogen positivity rates among groups.A total of 114 rodents of nine species were captured.The dominant species in this area were Apodemus agrarius(22.81%),Apodemus chevrieri(18.42%),Niviventer confucianus(17.54%),Apodemus latronum(16.67%),and Apodemus peninsu-lae(13.16%).Other rodent species included Rattus nitidus(4.39%),Neodon irene(4.39%),Chodsigoa hypsibia(1.75%),and Nivi-venter excelsior(0.88%).Statistically significant differences in rodent species composition were observed among regions,altitudes,and habitats(χ2Region=112.358,P<0.05;χ2Altitude=96.843,P<0.05;χ2Habitat=48.842,P<0.05).The liver and lung pathogen results showed that the positivity rate of Bartonella was highest(29/114),whereas those of the other seven pathogens were 0%-4.39%.Five rodents were co-infected with two or more pathogens,and the composite positivity rate was 4.36%(5/114).Statistically significant differences in the positivity rates were observed for Leptospira interrogans among species(χ2=6.568,P=0.028)and Anaplasma phagocytophilum among habitats(χ2=7.596,P=0.027);however,no significant differences in the positivity rates of other pathogens were found among rodent species,regions,altitudes,habitats,and sexes(P>0.05).Thus,rodent species were abundant in the high-altitude areas of western Sichuan and carried a variety of pathogens.Multiple pathogens showed compound infections,among which the positivity rate of Bartonella was relatively high.The total infection rate of pathogens in living areas was relatively high,and the risk of pathogenesis to the population is greater.Therefore,rodent control and disease monitoring efforts should be strengthened.
8.Construction and application of an esophageal language rehabilitation program for patients after total laryngectomy based on the behavioral change wheel theory
Li LI ; Yongling LIU ; Yang ZHANG ; Zirong TIAN ; Xiuya LI ; Xiaoting JIN ; Xiaobo REN ; Fang NAN ; Yiran HE
Chinese Journal of Practical Nursing 2025;41(7):487-497
Objective:To construct an esophageal language rehabilitation program for patients after total laryngectomy (TL) based on the behavioral change wheel theory and exploring its application effects.Methods:The multidisciplinary team constructed the first draft of the esophageal language rehabilitation program for patients after TL based on the behavioral change wheel theory, combined with a literature review, and used an expert meeting to revise the rehabilitation program to form the final draft of the program. Adopting experimental research, 35 patients after TL who attended the nursing outpatient clinic of Beijing Tongren Hospital, Capital Medical University from February 2023 to May 2023 were selected as the control group by convenience sampling method, and 35 patients after TL who attended the nursing outpatient clinic from June 2023 to September 2023 were selected as the experimental group. The experimental group applied the TL postoperative patients′ esophageal language rehabilitation program based on the behavioral change wheel theory on the basis of conventional nursing measures, and the control group received conventional nursing care. The status of language rehabilitation training, quality of life, social behavioral status, and anxiety and depression status before intervention, 1, 3, 6 months after intervention were compared between the two groups.Results:Both groups of patients completed the study. There were 29 males and 6 females in the control group, with an age of (54.63 ± 10.44) years old. There were 34 males and 1 female in the experimental group, with an age of (55.17 ± 10.67) years old. There was no statistically significant difference in the language rehabilitation training status, quality of life, social behavior status, and anxiety and depression status between the two groups before intervention (all P>0.05). The total scores of speech rehabilitation training in the experimental group at 1, 3, and 6 months after intervention were (32.80 ± 2.49), (39.80 ± 2.75), (51.91 ± 4.20) points, respectively, which were higher than those in the control group (23.40 ± 3.42), (24.40 ± 3.42), (25.80 ± 3.42) points, and the differences were statistically significant ( t=14.53, 23.44, 32.70, all P<0.05). The total scores of quality of life in the experimental group at 1, 3, and 6 months after intervention were (98.91 ± 8.49), (134.66 ± 11.31), (157.97 ± 13.97) points, respectively, which were higher than those in the control group (67.06 ± 7.64), (72.16 ± 7.64), (99.46 ± 8.09) points, and the differences were statistically significant ( t=17.53, 30.16, 21.45, all P<0.05). The scores for social occasion diet and language comprehension in the experimental group at 1, 3, and 6 months after intervention were (40.41 ± 13.94), (40.43 ± 24.08), (40.60 ± 18.56), and (43.71 ± 12.26), (47.40 ± 17.09), (52.50 ± 13.82), respectively, which were higher than those in the control group (30.59 ± 15.98), (30.57 ± 18.28), (27.21 ± 15.27), and (27.29 ± 15.13), (23.60 ± 14.78), (19.50 ± 12.78), and the differences were statistically significant ( t values were -6.88-2.16, all P<0.05). The total scores of anxiety and depression in the experimental group at 1, 3, and 6 months after intervention were (23.74 ± 2.73), (14.89 ± 3.89), (12.11 ± 3.14) points, respectively, which were lower than those in the control group (32.63 ± 1.85), (30.63 ± 1.85), (24.80 ± 2.75) points, and the differences were statistically significant (t=-19.55, -27.10, -17.97, all P<0.05). Conclusions:The esophageal language rehabilitation program for patients after TL based on the behavioral change wheel theory in this study is scientific, feasible, and can improve the patients′ esophageal language expression, quality of life, anxiety and depression, and social behavioral status, which can provide a reference for clinical care.
9.Cluster analysis-based classification of neck and shoulder function characteristics in patients after neck lymph node dissection for head and neck tumors
Miao SHANG ; Zirong TIAN ; Xue LIU ; Changyun WEI ; Xiaobo REN
Chinese Journal of Modern Nursing 2025;31(12):1642-1649
Objective:To identify the classification of neck and shoulder dysfunction in patients after neck lymph node dissection for head and neck tumors and analyze the characteristics of these dysfunctions.Methods:A convenience sampling method was used to select patients who underwent neck lymph node dissection and visited the Head and Neck Cancer Rehabilitation Nursing Clinic at Beijing Tongren Hospital, Capital Medical University, from March to May 2024. General data questionnaires, neck function indicators, and shoulder function symptom questionnaires were used for investigation.Results:A total of 113 patients who underwent neck lymph node dissection for head and neck tumors were included in the study. The top three neck dysfunction indicators with the highest occurrence rates were abnormal neck extension (87.6%, 99/113) , abnormal neck bending on the affected side (84.1%, 95/113) , and abnormal neck rotation on the affected side (84.1%, 95/113) . The top three shoulder dysfunction indicators with the highest occurrence rates were: abnormal shoulder flexion on the affected side (83.2%, 94/113) , abnormal shoulder abduction on the affected side (81.4%, 92/113) , and abnormal horizontal shoulder abduction on the affected side (80.5%, 91/113) . Using 18 indicators of neck and shoulder dysfunction as clustering variables, patients were classified into three groups: severe dysfunction group (53.1%, 60/113) , moderate dysfunction group (35.4%, 40/113) , and mild dysfunction group (11.5%, 13/113) . The differences in disease type and neck and shoulder function indicators between the three groups were statistically significant ( P<0.05) . Conclusions:Neck and shoulder dysfunction in patients after neck lymph node dissection for head and neck tumors is relatively severe, primarily manifesting as an abnormal range of motion. Healthcare providers should strengthen neck and shoulder function assessments in these patients and consider a range of motion exercises as a key rehabilitation program.
10.Surveillance of bacterial resistance in tertiary hospitals across China:results of CHINET Antimicrobial Resistance Surveillance Program in 2022
Yan GUO ; Fupin HU ; Demei ZHU ; Fu WANG ; Xiaofei JIANG ; Yingchun XU ; Xiaojiang ZHANG ; Fengbo ZHANG ; Ping JI ; Yi XIE ; Yuling XIAO ; Chuanqing WANG ; Pan FU ; Yuanhong XU ; Ying HUANG ; Ziyong SUN ; Zhongju CHEN ; Jingyong SUN ; Qing CHEN ; Yunzhuo CHU ; Sufei TIAN ; Zhidong HU ; Jin LI ; Yunsong YU ; Jie LIN ; Bin SHAN ; Yunmin XU ; Sufang GUO ; Yanyan WANG ; Lianhua WEI ; Keke LI ; Hong ZHANG ; Fen PAN ; Yunjian HU ; Xiaoman AI ; Chao ZHUO ; Danhong SU ; Dawen GUO ; Jinying ZHAO ; Hua YU ; Xiangning HUANG ; Wen'en LIU ; Yanming LI ; Yan JIN ; Chunhong SHAO ; Xuesong XU ; Wei LI ; Shanmei WANG ; Yafei CHU ; Lixia ZHANG ; Juan MA ; Shuping ZHOU ; Yan ZHOU ; Lei ZHU ; Jinhua MENG ; Fang DONG ; Zhiyong LÜ ; Fangfang HU ; Han SHEN ; Wanqing ZHOU ; Wei JIA ; Gang LI ; Jinsong WU ; Yuemei LU ; Jihong LI ; Qian SUN ; Jinju DUAN ; Jianbang KANG ; Xiaobo MA ; Yanqing ZHENG ; Ruyi GUO ; Yan ZHU ; Yunsheng CHEN ; Qing MENG ; Shifu WANG ; Xuefei HU ; Wenhui HUANG ; Juan LI ; Quangui SHI ; Juan YANG ; Abulimiti REZIWAGULI ; Lili HUANG ; Xuejun SHAO ; Xiaoyan REN ; Dong LI ; Qun ZHANG ; Xue CHEN ; Rihai LI ; Jieli XU ; Kaijie GAO ; Lu XU ; Lin LIN ; Zhuo ZHANG ; Jianlong LIU ; Min FU ; Yinghui GUO ; Wenchao ZHANG ; Zengguo WANG ; Kai JIA ; Yun XIA ; Shan SUN ; Huimin YANG ; Yan MIAO ; Mingming ZHOU ; Shihai ZHANG ; Hongjuan LIU ; Nan CHEN ; Chan LI ; Jilu SHEN ; Wanqi MEN ; Peng WANG ; Xiaowei ZHANG ; Yanyan LIU ; Yong AN
Chinese Journal of Infection and Chemotherapy 2024;24(3):277-286
Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5%were gram-positive and 70.5%were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3%,76.7%and 77.9%,respectively.Overall,94.0%of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8%of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2%in the isolates from children and 95.7%in the isolates from adults.The resistance rate to carbapenems was lower than 13.1%in most Enterobacterales species except for Klebsiella,21.7%-23.1%of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1%to 13.3%.The prevalence of meropenem-resistant strains decreased from 23.5%in 2019 to 18.0%in 2022 in Pseudomonas aeruginosa,and decreased from 79.0%in 2019 to 72.5%in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.

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