1.5G-enabled remote robot-assisted thoracic surgery: Clinical outcomes, current challenges, and future perspectives
Wenlong CHEN ; Jiyong YANG ; Yaling LIU ; Zhuang ZUO ; Changhao QUE ; Li DOU ; Yunjiu GOU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(05):698-709
With the integration of 5G communication technology and robotic surgical systems, remote robot-assisted thoracic surgery is overcoming geographical barriers, offering an innovative approach to addressing the uneven distribution of medical resources. This study conducted a systematic literature review—using databases such as PubMed and CNKI, with the search period extending up to 2025—incorporating clinical studies, case reports, and review articles to comprehensively evaluate the clinical efficacy and safety of 5G-enabled remote robot-assisted thoracic surgery (5G-RRATS). The analysis also examined current technological limitations and potential future development trajectories. Existing evidence indicates that, given adequate technical support, 5G-RRATS can achieve perioperative outcomes comparable to those of conventional local robotic surgeries across procedures including pulmonary wedge resection, lobectomy, and esophagectomy. Furthermore, it demonstrates potential advantages in minimizing surgical incisions and reducing intraoperative blood loss. Nevertheless, challenges related to network stability, latency control, interdisciplinary collaboration between medical and engineering teams, and legal, regulatory, and ethical considerations continue to hinder widespread clinical adoption. Looking ahead, the emergence of a "one-to-many" remote surgical model, combined with the integration of artificial intelligence and augmented reality technologies, as well as advancements in low-orbit satellite communications, may enable 5G-RRATS to further advance precision and efficiency in thoracic surgery, thereby facilitating equitable access to high-quality care for a broader patient population.
2.The study of m6A methylation-related proteins in the prefrontal cortex of PTSD mice
Jiaying LU ; Luodong YANG ; Keke LU ; Wenlong XIN ; Bin LI ; Qulong LI ; Guiqing ZHANG
Acta Universitatis Medicinalis Anhui 2026;61(3):495-500
ObjectiveTo investigate the expression of prefrontal cortical neurons, methyltransferase-like 3 (METTL3), fat mass and obesity-associated gene (FTO), and AlkB homolog 5 (ALKBH5) proteins in a mouse model of post-traumatic stress disorder (PTSD). MethodsA PTSD mouse model was established using a single prolonged stress and foot shock stimulation (SPSS) method. The despair, anxiety, and learning and memory functions of PTSD mice were assessed through the open field test, Y-maze test, and forced swimming test. Neuronal damage was detected via HE and Nissl staining. The expression levels of METTL3, FTO, ALKBH5, and neuronal nuclear protein (NEUN) were assessed by Western blot and immunofluorescence staining. ResultsCompared to control group, PTSD mice subjected to SPSS exhibited signs of despair, anxiety, and impaired learning and memory. HE and Nissl staining results showed neuronal damage in the prefrontal cortex of PTSD mice. Western blot and immunofluorescence staining results showed that the expression of the m6A-related proteins METTL3 and FTO decreased, while the expression of ALKBH5 increased in the prefrontal cortex. Additionally, NEUN protein levels showed a declining trend. ConclusionThe pathogenesis of PTSD may be associated with neuronal damage in the prefrontal cortex and alterations in m6A methylation proteins.
3.Modern Clinical Application and Mechanism of Action of Sanhuang Xiexintang: A Review
Zhiyi WANG ; Wenlong YANG ; Ming BAI ; Zibo LI ; Erping XU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(18):237-247
Sanhuang Xiexintang (SHXXT), originating from the Synopsis of the Golden Chamber (Jin Gui Yao Lue), comprises three medicinal herbs: Rhei Radix et Rhizoma, Coptidis Rhizoma, and Scutellariae Radix. Renowned for its effects of purging fire, detoxifying, drying dampness, and draining heat, SHXXT primarily treats syndromes characterized by internal excess heat, dampness-heat stagnation, and reckless blood movement due to heat. Because of the concise formulation and remarkable efficacy of this formula, modern research has extensively explored the chemical composition, clinical applications, and pharmacological mechanisms of SHXXT, yielding significant advancements. As a modern derivative of SHXXT, Yiqing granules exemplify the transformation of classical formulas into convenient and precise applications, embodying the paradigm of modern development of classical formulas. This systematic review synthesizes recent research progress in SHXXT. Chemical analyses reveal that the active components—anthraquinones, alkaloids, and flavonoids—of SHXXT exert holistic therapeutic effects through multi-component synergy. Clinical studies demonstrate broad utility of this formula in managing digestive disorders, endocrine diseases, urinary tract infections, dermatological conditions, and systemic inflammatory diseases, highlighting its multi-system regulatory potential. Mechanism investigations elucidate its multi-target mechanism of action, including antimicrobial, anti-inflammatory, metabolic-regulatory, hepatoprotective, and gastrointestinal-modulating effects, reflecting an integrated multi-component, multi-target, multi-pathway mode of action. This review systematically summarizes the modern research progress in SHXXT, providing a theoretical foundation for deciphering the scientific essence of classical formulas and advancing their precision application in clinical practice.
4.Changes in brain activity in patients with post-traumatic stress disorder two months after the traumatic event
Luodong YANG ; Haohao LI ; Yao MENG ; Min HU ; Wenlong XING ; Liang JIANG ; Guiqing ZHANG
Chinese Mental Health Journal 2025;39(4):301-307
Objective:To explore changes in brain activity in patients with post-traumatic stress disorder(PTSD).Methods:A total of 40 participants involved in car accidents were included,and functional magnetic reso-nance imaging(fMRI)scans were collected within one week.Anxiety,depression,and personality assessments were conducted with the Hamilton Anxiety Scale(HAMA),Hamilton Depression Scale(HAMD),and Eysenck Person-ality Scale for Adult(EPQ).After two months,a second fMRI scan was conducted,and a PTSD diagnosis was made.Participants were divided into a trauma-exposed group(n=23)and a PTSD group(n=17)based on wheth-er they developed PTSD.Changes in brain functional activity between the trauma-exposed group and the PTSD group were compared using the percentage of amplitude fluctuation(perAF)method.Results:Compared to the trauma-exposed group,the PTSD group showed a decreased perAF value in the left hippocampus at 1 week,and de-creased perAF values in the right mid-cingulate gyrus and left postcentral gyrus at 2 months(P<0.05).When comparing the PTSD group at different times,the perAF values in the left middle temporal gyrus and left medial su-perior frontal gyrus decreased at 2 months(P<0.05).Correlation analysis revealed that PCL-5 scores were posi-tively correlated with EPQ Psychoticism(r=0.32,P=0.041),HAMA(r=0.35,P<0.05),and HAMD(r=0.34,P<0.05).Regression analysis found that higher scores of EPQ psychoticism(OR=11.79)and HAMA(OR=1.62)were risk factors for post-accident PTSD,while higher scores of EPQ extraversion(OR=0.32)were pro-tective factors.Conclusion:It suggests that patients with post-traumatic stress disorder may show decreased activity in the right middle cingulate cortex,left postcentral gyrus,left middle temporal gyrus,and left medial superior fron-tal gyrus within two months after the traumatic event.
5.Efficacy analysis of cefoperazone-sulbactam and ulinastatin combined treatment for stroke-associated pneumonia in patients with acute large vessel occlusion stroke undergoing endovascular treatment
Wenlong MA ; Zhiheng LI ; Fude LIU ; Xiangning HAN ; Jia YU ; Jianfeng HAN ; Yawen CHENG
Chinese Journal of Cerebrovascular Diseases 2025;22(4):225-234
Objective To evaluate the efficacy of cefoperazone-sulbactam(CS)combined with ulinastatin in the treatment for stroke-associated pneumonia(SAP)after endovascular treatment of acute large vessel occlusive stroke(AIS-LVO).Methods This study retrospectively included patients who developed SAP after endovascular treatment of AIS-LVO admitted to the intensive care unit of the Department of Neurology at the First Affiliated Hospital of Xi'an Jiaotong University from March 2022 to December 2023.Patients were randomly divided into the ulinastatin group(combined application of ulinastatin and CS)and the control group(sole application of CS)using a random number table.Baseline and clinical data,including sex,age,infarct laterality,culprit vessel,trial of Org 10172 in acute stroke treatment(TOAST)classification,baseline National Institutes of Health stroke scale(NIHSS)score,baseline Glasgow coma scale(GCS)score,medical history(hypertension,diabetes,coronary heart disease,atrial fibrillation,past history of stroke),history of smoking and alcohol consumption,admission baseline blood pressure,laboratory test results at admission(including red blood cell count,white blood cell count,neutrophil count,platelet count,random blood glucose levels,albumin,creatinine,low-density lipoprotein cholesterol,uric acid,and D-dimer),and endovascular therapies(including mechanical retrieval of thrombus,stenting,balloon dilatation,arterial thrombolysis and combination therapy)were collected from both groups.After the diagnosis of SAP,patients in both groups underwent conventional treatment such as sputum expectoration and clearance,antipyretic and antitussive treatment,oxygen therapy,respiratory support,fluid and nutrition support,along with CS anti-infective therapy.In contrast to the control group,the ulinastatin group additionally received continuous ulinastatin treatment for at least 7 days.The adverse reactions of the two groups after initiating SAP treatment including allergic reactions(such as sudden dyspnea,skin redness,and shock),decrease in peripheral white blood cell count(below 4.0 × 109/L),nausea and vomiting,diarrhea,rash and/or itching,and liver enzymes(aspartate aminotransferase or alanine aminotransferase)elevation(more than twice the upper limit of normal)were compared between the two groups.The efficacy indicators encompassing arterial blood gas analysis(oxygenation index)and inflammatory factor indicators(interleukin-6[IL-6],procalcitonin)after 7 days of SAP treatment,pneumonia-related symptoms and signs before and after SAP treatment(including body temperature,heart rate,respiratory rate,sputum volume and characteristics,changes in lung rales,etc.),imaging examinations(such as head CT and chest CT).The evaluation of therapeutic efficacy is classified as(1)markedly effective:following treatment,significant relief was observed on pneumonia-related symptoms and signs,with body temperature returned to normal,and arterial blood gas analysis and inflammatory factor indicators returned to normal levels;post-treatment imaging studies reveal that over 2/3 of lung inflammation has been absorbed;(2)effective:after treatment,some improvement was observed in pneumonia-related symptoms and signs,with mild improvement in arterial blood gas analysis and inflammatory factor indicators;post-treatment imaging studies reveal some absorption of lung inflammation;(3)ineffective:no improvement or further deterioration of pneumonia-related symptoms,arterial blood gas analysis,and inflammatory factor indicators after treatment.The arterial blood gas analysis,inflammatory factor indicators and efficacy indicators were evaluated and compared between the control and the ulinastatin group.Compare the prognosis(improvement of the lesion in the chest CT after 7 days of treatment,length of stay in the intensive care unit,total length of hospital stay,and modified Rankin scale[mRS]score assessed via telephone follow-up or outpatient revisit 90 days after endovascular treatment[with an mRS score ≤2 indicating a good prognosis],as well as mortality).Results A total of 99 patients with AIS-LVO who developed SAP after endovascular treatment were included in this study,with 69 males(69.7%)and 30 females(30.3%),and an average age of(68±10)years.Among them,there were 46 cases in the ulinastatin group and 53 cases in the control group.(1)No statistically significant differences were observed in baseline or clinical characteristics between the two groups(all P>0.05).(2)The overall effective(markedly effective and effective)rate of SAP treatment was greater in the ulinastatin group than that in the control group(89.1%[41/46]vs.69.8%[37/53],P=0.019).(3)No statistically significant differences were observed in serum IL-6 levels,procalcitonin levels,or arterial oxygenation index between the ulinastatin group and the control group before treatment(all P>0.05).seven days after treatment,the levels of serum IL-6([21.13±14.86]ng/L vs.[64.39±52.95]ng/L)and procalcitonin([0.12±0.11]μg/L vs.[0.31±0.20]μg/L)in the ulinastatin group were significantly lower compared to those before treatment(all P<0.01),and the arterial oxygenation index was significantly higher than that before treatment([359.35±92.56]mmHg vs.[273.34±95.65]mmHg,P<0.01).Seven days after treatment,the levels of serum IL-6([21.13±14.86]ng/L vs.[31.90±21.95]ng/L)and procalcitonin([0.12±0.11]μg/L vs.[0.26±0.24]μg/L)in the ulinastatin group were significantly lower than those in the control group(all P<0.01),and the arterial oxygenation index was significantly higher than that of the control group([359.35±92.56]mmHg vs.[314.81±81.97]mmHg,P=0.020).(4)In the ulinastatin group,there was 1 case of nausea and vomiting,1 case of itching and/or rash,and 1 case of elevated liver enzymes,resulting in an adverse reaction rate of 6.5%(3/46).In the control group,there were 2 cases of nausea and vomiting,1 case of itching and/or rash,and 1 case of elevated liver enzymes,resulting in an adverse reaction rate of 7.5%(4/53).No statistically significant differences were observed in the adverse reaction rate between the two groups(P>0.05).(5)After 7 days of treatment,the ulinastatin group exhibited a greater improvement rate in chest CT lesions compared to the control group(93.5%[43/46]vs.77.4%[41/53],P=0.026).No statistically significant differences were observed between the two groups in terms of the length of stay in the intensive care unit or the total length of hospital stay(both P>0.05).Additionally,the 90-day mortality rate after intravascular treatment was lower in the ulinastatin group compared to the control group(6.5%[3/46]vs.20.8%[11/53],P=0.040).No statistically significant differences were observed in the good prognosis rate between the two groups(P=0.119).Conclusions Combined treatment with CS and ulinastatin can improve the clinical symptoms,inhibit inflammatory factors and reduce mortality rate in SAP patients after receiving endovascular treatment for AIS-LVO.The results of this study still need to be further confirmed by large-scale prospective studies.
6.Effects of Shenyuan Yiqi Huoxue Capsules on Cardiopulmonary Exercise Function and Quality of Life in Patients with Ischemic Cardiomyopathy
Zhuhua ZHANG ; Tengfei LI ; Xiao XIE ; Wenlong XING ; Yingzhe CHEN ; Mei DAI ; Jiaping CHEN
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(10):142-147
Objective To explore the effects of Shenyuan Yiqi Huoxue Capsules on cardiopulmonary exercise function and quality of life in patients with ischemic cardiomyopathy.Methods Totally 66 patients with ischemic cardiomyopathy were divided into treatment group and control group using random number table method,with 33 cases in each group.Both groups received standardized Western medicine treatment,and the treatment group was additionally given Shenyuan Yiqi Huoxue Capsules,the control group was given Shenyuan Yiqi Huoxue Capsules simulator,three capsules per time,three times a day,orally.The observation period was 30 days.To evaluate the efficacy of TCM syndrome in two groups.The observation indicators included baseline data,TCM syndrome scores,cardiopulmonary exercise test detection indicators,MLHFQ score,SF-36 score,echocardiographic indicators,N-terminal pro-B-type natriuretic peptide(NT-pro BNP)and safety indicators.Results The total effective rate of the treatment group was 93.94%(31/33),while that of the control group was 78.79%(26/33).The treatment group was significantly better than the control group(P<0.05).Compared with before treatment,the TCM syndrome scores of the two groups of patients decreased(P<0.05),and after treatment,the TCM syndrome score of the treatment group was lower than that of the control group(P<0.05).Compared with before treatment,the peak oxygen uptake(peak VO2),anaerobic threshold(AT)and peak oxygen pulse(peak O2 pulse)of both groups of patients increased,while the carbon dioxide ventilation equivalent slope(VE/VCO2 slope)decreased(P<0.05).After treatment,the treatment group had higher peak VO2,AT and peak O2 pulse than the control group,while the VE/VCO2 slope was lower than the control group(P<0.05).Compared with before treatment,both groups of patients showed a decrease in MLHFQ score and an increase in SF-36 score(P<0.05);after treatment,the MLHFQ score in the treatment group was lower than that in the control group,and the SF-36 score was higher than that in the control group(P<0.05).Compared with before treatment,both groups of patients showed a decrease in left ventricular end systolic diameter,left ventricular end diastolic diameter and NT-pro BNP levels,while myocardial motion index and left ventricular ejection fraction increased(P<0.05);after treatment,the treatment group showed a decrease in left ventricular end systolic diameter,left ventricular end diastolic diameter and NT-pro BNP levels,while myocardial motion index and left ventricular ejection fraction increased(P<0.05).During the treatment period,no adverse reactions such as dizziness,nausea,vomiting or diarrhea were found in both groups of patients.Conclusion Shenyuan Yiqi Huoxue Capsules can significantly improve the clinical efficacy of ischemic cardiomyopathy patients,alleviate TCM symptoms,improve their cardiorespiratory function and quality of life.
7.Risk factors for stroke-associated pneumonia after endovascular therapy in patients with acute anterior circulation large vessel occlusion stroke
Zhiheng LI ; Yawen CHENG ; Xiangning HAN ; Jiahao LI ; Wenlong MA ; Jia YU ; Guogang LUO ; Fude LIU
Journal of Xi'an Jiaotong University(Medical Sciences) 2025;46(2):203-208
Objective To investigate the risk factors for stroke-associated pneumonia(SAP)in patients with acute anterior circulation large-vessel occlusion stroke after endovascular treatment(EVT).Methods A total of 115 patients with acute anterior circulation large-vessel occlusion stroke who received EVT in the Department of Neurology,The First Affiliated Hospital of Xi'an Jiaotong University,from March 2022 to May 2023 were continuously included.Their clinical data were retrospectively collected.The patients were divided into SAP group(55 cases)and non-SAP group(60 cases)according to the occurrence of SAP after the operation.Differences in baseline data,surgical and perioperative indicators were compared between the two groups,and the risk factors for SAP after EVT were analyzed using the multivariate Logistic regression analysis.Results Univariate analysis showed there were significant differences in the Glasgow Coma Scale(GCS)score and the National Institute of Health Stroke Scale(NIHSS)score at admission,incidence of dysphagia,duration of the surgery,proportion of general anesthesia,rate of unsuccessful vascular recanalization and the rate of immediate CT high-density sign between SAP group and non-SAP group(all P<0.05).Multivariate Logistic regression analysis of the above indicators showed that duration of the surgery(OR=1.014,95%CI:1.001-1.028,P<0.05),dysphagia(OR=6.137,95%CI:1.694-22.232,P<0.01)and unsuccessful vascular recanalization(OR=6.043,95%CI:1.062-34.382,P<0.05)were independent risk factors for SAP after EVT.Conclusion Long duration of EVT,dysphagia and unsuccessful vascular recanalization are directly related to the occurrence of SAP after EVT in patients with acute anterior circulation large-vessel occlusive infarction.Therefore,targeted measures should be taken as soon as possible to reduce the incidence of SAP after EVT and thus improve the clinical prognosis of these patients.
8.Clinical and pathological features and prognostic analysis of early-onset intrahepatic cholangiocarcinoma
Delong QIN ; Yue TANG ; Zonglong LI ; Jialu CHEN ; Zhimin GENG ; Chuandong SUN ; Hong WU ; Yinghe QIU ; Tianqiang SONG ; Xianhai MAO ; Yu HE ; Zhangjun CHENG ; Wenlong ZHAI ; Jingdong LI ; Xiao LIANG ; Ruixin LIN ; Di TANG ; Zhaohui TANG ; Zhiwei QUAN
Chinese Journal of Surgery 2025;63(6):500-507
Objective:To explore the clinical and pathological features and survival outcomes of patients with early-onset intrahepatic cholangiocarcinoma (EOICC).Methods:This is a multicenter, retrospective cohort study. Data of 1 160 intrahepatic cholangiocarcinoma patients undergoing radical resection in 14 tertiary Grade A hospitals in China from January 2010 to November 2021 were retrospectively collected. The cohort included 632 males and 528 females, aged( M (IQR)) 61 (14) years (range: 22 to 93 years). ICC aged ≤50 years at the time of diagnosis was defined as EOICC and >50 years as late-onset intrahepatic cholangiocarcinoma (LOICC). Of these, there were 247 cases in the EOICC group and 913 cases in the LOICC. The clinical and pathological characteristics of both groups were analyzed and compared using the independent sample t-test, Mann-Whitney U test or Kaplan-Meier method. Univariate and multivariate Cox regression models for patient outcomes were constructed and forest graphed. Results:Compared with the patients in the LOICC group, patients in the EOICC group had lower carcinoembryonic antigen levels (2.5(4.0) μg/L vs. 3.1(5.2)μg/L, U=124 899, P=0.009) and CA19-9 level (63.4(524.7)U/ml vs. 77.9(611.3)U/ml, U=120 320, P=0.013), higher levels of ALT (29(35)U/L vs. 24(26)U/L, U=101 214, P=0.013), a lower score of the Eastern US Cooperative Oncology Group (0 score patients: 54.7% vs. 44.1%, χ2=12.472, P=0.014), higher TNM stage ( χ2=11.807, P=0.038), and proportion of lymph node dissection (62.3% vs. 54.1%, χ2=5.355, P=0.021). Patients in the two groups in sex, first diagnosis symptoms, intrahepatic bile duct stone history, nail protein, albumin, total bilirubin, transaminase, liver function Child-Pugh grade, T stage, stage, N stage, preoperative laparoscopic exploration proportion, tumor diameter, vascular invasion proportion, differentiation, margin, intraoperative bleeding, postoperative complications, postoperative hospital days were no statistical significance (all P>0.05). Patients in the EOICC group had better outcomes than the LOICC group (median survival time: 29.7 months vs. 25.0 months, 3-year overall survival: 45.1% vs. 37.8%, P=0.027). Conclusion:EOICC patients are better than LOICC patients in carcinoembryonic antigen, CA19-9, ALT, physical strength status and TNM stage, and the long-term prognosis is also better than LOICC patients.
9.Risk factors for stroke-associated pneumonia after endovascular therapy in patients with acute anterior circulation large vessel occlusion stroke
Zhiheng LI ; Yawen CHENG ; Xiangning HAN ; Jiahao LI ; Wenlong MA ; Jia YU ; Guogang LUO ; Fude LIU
Journal of Xi'an Jiaotong University(Medical Sciences) 2025;46(2):203-208
Objective To investigate the risk factors for stroke-associated pneumonia(SAP)in patients with acute anterior circulation large-vessel occlusion stroke after endovascular treatment(EVT).Methods A total of 115 patients with acute anterior circulation large-vessel occlusion stroke who received EVT in the Department of Neurology,The First Affiliated Hospital of Xi'an Jiaotong University,from March 2022 to May 2023 were continuously included.Their clinical data were retrospectively collected.The patients were divided into SAP group(55 cases)and non-SAP group(60 cases)according to the occurrence of SAP after the operation.Differences in baseline data,surgical and perioperative indicators were compared between the two groups,and the risk factors for SAP after EVT were analyzed using the multivariate Logistic regression analysis.Results Univariate analysis showed there were significant differences in the Glasgow Coma Scale(GCS)score and the National Institute of Health Stroke Scale(NIHSS)score at admission,incidence of dysphagia,duration of the surgery,proportion of general anesthesia,rate of unsuccessful vascular recanalization and the rate of immediate CT high-density sign between SAP group and non-SAP group(all P<0.05).Multivariate Logistic regression analysis of the above indicators showed that duration of the surgery(OR=1.014,95%CI:1.001-1.028,P<0.05),dysphagia(OR=6.137,95%CI:1.694-22.232,P<0.01)and unsuccessful vascular recanalization(OR=6.043,95%CI:1.062-34.382,P<0.05)were independent risk factors for SAP after EVT.Conclusion Long duration of EVT,dysphagia and unsuccessful vascular recanalization are directly related to the occurrence of SAP after EVT in patients with acute anterior circulation large-vessel occlusive infarction.Therefore,targeted measures should be taken as soon as possible to reduce the incidence of SAP after EVT and thus improve the clinical prognosis of these patients.
10.Effectiveness and duration of point-of-use filter in improving endoscopic final rinse water quality
Xinyue ZHANG ; Jing DING ; Dawei WU ; Shuangfeng CHEN ; Suxiang JIN ; Wenlong WANG ; Yongxiang ZHANG ; Wensen CHEN ; Weihong ZHANG ; Zhanjie LI
Chinese Journal of Infection Control 2025;24(3):323-328
Objective To study the effect and duration of point-of-use filters on the improvement of endoscopic fi-nal rinse water quality.Methods The final rinse water end at the gastroscope manual cleaning workstation in the Endoscopy Centre of the First Affiliated Hospital with Nanjing Medical University was selected to install a tap ter-minal filter;five specimens of final rinse water were collected consecutively before the installation,immediately after the installation,and 1-11 weeks after the installation.At each sampling time,the staff responsible for clea-ning and disinfecting were asked whether the flow rate of discharged water could satisfy the working demand;the final rinse water was inoculated on R2A culture medium with membrane filter method,bacterial colony forming unit(CFU)was calculated after 30℃ incubation for 5 days.Results The qualified rates of endoscopic final rinse water before point-of-use filter installation was 0,immediately after and 1-9 weeks after installation were both 100%,10 and 11 weeks after installation were 80.0%and 20.0%,respectively.The mean CFU of endoscopic final rinse wa-ter before point-of-use filter installation was 102 CFU/100 mL,immediately after and 1-9 weeks after installation were both ≤2 CFU/100 mL,10 and 11 weeks after installation were 8 and 18 CFU/100 mL,respectively.The feedback from the cleaning and disinfection staff before installation,immediately after installation,and 1-11 weeks after installation indicated that the flow rate of discharged water gradually slowed down over time,but could still meet the work requirements.Conclusion The point-of-use filter can quickly and effectively improve the quality of endoscopic final rinse water,with use duration of up to 9 weeks after installation;Its biggest advantage is that it can serve as the final barrier to all integrated measures,playing a supplementary role in case of any problems occu-rring in the front-end process,and ensuring the microbial quality of the final rinse water to the greatest extent possible.

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