1.Improvement effects and mechanism of astragaloside Ⅳ on neuroinflammation
Mimi WANG ; Yonggang FENG ; Yun HAN ; Kaixin SHAN ; Fuyu LIU ; Mingsan MIAO ; Xiaoyan FANG
China Pharmacy 2026;37(1):30-35
OBJECTIVE To investigate the improvement effects and mechanism of astragaloside Ⅳ (AS- Ⅳ ) on lipopolysaccharide (LPS)-induced neuroinflammation. METHODS BV2 cells were divided into control group, LPS group, AS-Ⅳ groups at concentrations of 20 and 40 μmol/L, and dexamethasone group (2 μmol/L). Except for control group, neuroinflammation model was established with LPS (1 μg/mL) in other groups after medication. The levels of inflammatory factors [interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and nitric oxide (NO)] in cell supernatant were measured in each group. Mice were randomly divided into normal group, model group, positive control group (Aspirin enteric-coated tablet, 20 mg/kg), AS-Ⅳ low- and high-dose groups (10, 20 mg/kg), with 6 mice in each group. Mice in each group were administered the corresponding drug/normal saline via gavage/intraperitoneal injection, once a day, for 14 consecutive days. Except for normal group, other groups were intraperitoneally injected with LPS (250 μg/kg) 1 hour after daily administration of the drug/normal saline to establish neuroinflammation model. Serum levels of IL-6 and TNF-α were measured 2 h after the last medication; histopathological morphology of cerebral tissue in mice were observed; the co-localization of inducible nitric oxide synthase (iNOS)/ionized calcium binding adapter molecule 1 (Iba1) and CD206/Iba1 in the cerebral cortex region of mice was observed; the expressions of proteins related to the nuclear factor-κB (NF-κB)/mitogen-activated protein kinase (MAPK) signaling pathway in brain tissue of mice were also determined, including NF-κB p65, phosphorylated NF-κB p65(p-NF-κB p65), p38 MAPK, phosphorylated p38 MAPK (p-p38 MAPK), extracellular signal-regulated kinase (ERK), and phosphorylated ERK (p-ERK). RESULTS In the cell experiments, compared with control group, the levels of IL-6, TNF- α and NO in the cell supernatant of the LPS group were increased significantly (P<0.05); compared with LPS group, the levels of IL-6, TNF-α and NO were decreased significantly in the administration groups (P<0.05). In the animal experiments, compared with the normal group, the serum levels of IL-6 and TNF- α, the number of iNOS/Iba1 co-localization positive cells in the cerebral cortex, and the phosphorylation levels of p38 MAPK, NF- κB p65 and ERK proteins in brain tissue were all significantly increased/elevated in model group (P<0.05); the number of CD206/ Iba1 co-localization positive cells in the cerebral cortex region significantly decreased (P<0.05). The neurons in the cerebral cortex and the CA3 region of the hippocampus displayed a disordered arrangement. Compared with model group, above quantitative indexes of mice were all reversed significantly in administration groups (P<0.05); the neuronal cells in the cerebral cortex and the CA3 region of the hippocampus exhibited a relatively orderly arrangement. CONCLUSIONS AS-Ⅳ may inhibit the activation of the NF-κB/MAPK signaling pathway, promote the M2-type polarization of microglia, and thereby suppress neuroinflammatory responses.
2.Optimization of drug dispensing and pickup process in traditional Chinese medicine pharmacy based on data-intelligence-driven
Qi WANG ; Panke ZENG ; Haoxin SONG ; Yonggang FENG ; Lili SUN ; Jingting FENG ; Weiqing NIU ; Haiyan DONG ; Feng WANG
China Pharmacy 2026;37(5):660-664
OBJECTIVE To explore the transformation of the dispensing and drug pickup process in traditional Chinese medicine pharmacy (TCM Pharmacy) in our hospital based on data-intelligence-driven, aiming to improve pharmacists’ work efficiency and patients’ drug pickup experience. METHODS Value stream mapping and journey mapping were used to systematically identify non-value-added links in pharmacists’ dispensing process and key pain points in patients’ drug pickup under the traditional process. An intelligent dispensing and drug pickup system for the TCM Pharmacy was developed based on the C# and Android television platforms, and a machine-learning model was adopted to predict patients’ drug pickup waiting time. A comprehensive evaluation was performed from three perspectives: system performance, prediction accuracy, and satisfaction of pharmacists and patients. RESULTS The system successfully streamlined non-value-added links such as “waiting for writing on the board” and “searching for drugs”, and realized multimodal dynamic prompts of dispensing status through auditory (number calling) and visual (television terminal) channels. The constructed model for predicting drug pickup waiting time exhibited good fitting degree and generalization ability (mean absolute error=4.28 min, R 2 =0.882). The comprehensive satisfaction scores of pharmacists and patients in the traditional mode were significantly increased from (70.99±1.74) and (73.58±1.98) to (90.02±1.30) and (88.61±2.08) in the new system, respectively ( P <0.01). CONCLUSIONS The transformation of the intelligent drug dispensing and pickup system for TCM pharmacy based on data-intelligence-driven effectively improves the efficiency of pharmacists’ dispensing work, realizes process transparency and waiting time predictability, and significantly enhances patients’ drug pickup experience.
3.Progress in artificial intelligence for predicting therapeutic efficacy of intravitreal injection
Xiaofeng WU ; Jiayi ZHANG ; Chunyan XIAO ; Yanshuang GENG ; Yonggang LIU ; Boxuan SONG ; Jiawei WANG
International Eye Science 2026;26(4):687-693
Intravitreal anti-vascular endothelial growth factor(anti-VEGF)therapy has been widely used, but the variability in its therapeutic efficacy limits individualized treatment. In recent years, the application of artificial intelligence(AI)has opened up new avenues for personalized treatment response prediction, and its core branches include machine learning(ML)and deep learning(DL). This review systematically retrieved and analyzed 41 relevant studies published up to April 2025. Comprehensive analysis reveals that AI predictive models are evolving from forecasting single endpoints(such as visual acuity or central retinal thickness)to integrating multi-dimensional endpoints(encompassing anatomical, functional, and treatment demand parameters)and generating predictive imaging outputs. In terms of technical approaches, DL models(28 studies, accounting for 68.3%)dominate this field due to their robust image interpretation capabilities, while ML models(10 studies, 24.4%)retain significant value in the analysis of structured clinical data. Cross-disease comparisons indicate that research efforts are most concentrated on age-related macular degeneration(ARMD)and diabetic macular edema(DME), with shared conceptual frameworks for model construction, yet distinct anatomical and functional indicators are prioritized for each disease. Currently, the field confronts several key challenges, including insufficient prospective clinical validation, limited model interpretability(the “black box problem”), and a scarcity of high-quality multi-center datasets. Moving forward, it is imperative to advance real-world validation and develop explainable AI techniques to expedite the clinical translation of these predictive models.
4.Production Research and Risk Factor Analysis of Transfusion and Infusion Warmer Based on Real-World Data.
Hongfeng BI ; Yonggang WANG ; Zhendong WANG ; Yuan FU ; Huifang NIU
Chinese Journal of Medical Instrumentation 2025;49(4):466-472
OBJECTIVE:
To investigate the transfusion and infusion warmer manufacturers, combine the use failures to analyze adverse events, and provide support for enterprise risk management and clinical safe use.
METHODS:
The sentinels from 7 manufacturing enterprises and 11 medical institutions that participated in Shandong Province's key monitoring program during the "14th Five-Year Plan" period were targeted. This was done by understanding the equipment's principles, structures, and quality control. Additionally, real-world data from January 2019 to December 2023 were collected to count adverse events.
RESULTS:
During production, there are risks in switching power supply stability and solder joint firmness. Fifteen kinds of faults occurred during use, and common faults such as inability to heat, unable to turn on the machine, and bubbles in the infusion tube accounted for more than 80%.
CONCLUSION
There are many risk points and failures for transfusion and infusion warmers, so enterprises should improve processes and quality control to address risks, and medical institutions should formulate specifications and maintenance plans to provide targeted theoretical basis for supervision.
Blood Transfusion/instrumentation*
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Risk Factors
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Quality Control
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Humans
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Risk Management
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Equipment Failure
5.Jiawei Xiaoyao Pills improves depression-like behavior in rats by regulating neurotransmitters, inhibiting inflammation and oxidation and modulating intestinal flora.
Ying LIU ; Borui LI ; Yongcai LI ; Lubo CHANG ; Jiao WANG ; Lin YANG ; Yonggang YAN ; Kai QV ; Jiping LIU ; Gang ZHANG ; Xia SHEN
Journal of Southern Medical University 2025;45(2):347-358
OBJECTIVES:
To explore the bioactive components in Jiawei Xiaoyao Pills (JWXYP) and their mechanisms for alleviating depression-like behaviors.
METHODS:
The active compounds, key targets, and pathways of JWXYP were identified using TCMSP and TCMIP databases. Thirty-six SD rats were randomized equally into 6 groups including a control group and 5 chronic unpredictable mild stress (CUMS)-induced depression groups. After modeling, the 5 model groups were treated with daily gavage of normal saline, 1.8 mg/kg fluoxetine hydrochloride (positive control drug), or JWXYP at 1.44, 2.88, and 4.32 g/kg. The depression-like behaviors of the rats were evaluated using behavioral tests, and pathological changes in the liver and hippocampus were examined with HE staining. The biochemical indicators in the serum and brain tissues were detected using ELISA. Serum metabolomics analysis was performed to identify the differential metabolites using OPLS-DA, and gut microbiota changes were analyzed using 16S rDNA sequencing.
RESULTS:
Network pharmacology revealed that menthone and paeonol in JWXYP were capable of penetrating the blood-brain barrier to regulate inflammatory pathways and protect the nervous system. In the rat models subjected to CUMS, treatment with JWXYP significantly improved body weight loss, sucrose preference and open field activities, reduced liver inflammation, alleviated structural changes in the hippocampal neurons, decreased serum levels of TNF‑α, IL-1β, IL-6 and LBP, and increased 5-HT and VIP concentrations in the serum and brain tissue, and these effects were the most pronounced in the high-dose group. Metabolomics analysis showed changes in such metabolites as indole-3-acetamide and acetyl-L-carnitine in JWXYP-treated rats, involving the pathways for bile acid biosynthesis and amino acid metabolism. 16S rDNA analysis demonstrated increased gut microbiota diversity and increased abundance of Lactobacillus species in JWXYP-treated rats.
CONCLUSIONS
JWXYP alleviates depression-like symptoms in rats by regulating the neurotransmitters, inhibiting inflammation and oxidation, and modulating gut microbiota.
Animals
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Drugs, Chinese Herbal/therapeutic use*
;
Gastrointestinal Microbiome/drug effects*
;
Rats, Sprague-Dawley
;
Depression/drug therapy*
;
Neurotransmitter Agents/metabolism*
;
Rats
;
Inflammation
;
Male
;
Hippocampus
;
Behavior, Animal/drug effects*
6.Comparative efficacy of robot-assisted percutaneous reduction and screw fixation versus open reduction plate internal fixation via the sinus tarsi approach in the treatment of Sanders types II and III calcaneal fractures
Bin ZHAO ; Cunxiang MA ; Anjie SHEN ; Qi LIU ; Jinqi LI ; Fan YANG ; Yonggang SU ; Wei HAN ; Junqiang WANG
Chinese Journal of Trauma 2025;41(7):653-662
Objective:To compare the efficacy of robot-assisted percutaneous reduction and screw fixation versus open reduction and plate fixation via the sinus tarsi approach in the treatment of Sanders types II and III calcaneal fractures.Methods:A retrospective cohort study was conducted to analyze the clinical data of 82 patients (90 feet) with calcaneal fractures admitted to the Department of Orthopedic Trauma, Beijing Jishuitan Hospital, Capital Medical University from January 2020 to April 2024, including 74 males and 8 females, aged 24-87 years [(46.4±12.1)years]. According to Essex-Lopresti classification, the fractures were classified as tongue-type in 43 patients and joint-collapse-type in 47. According to Sanders classification, 69 feet were classified as type II and 21 as type III. Forty-seven patients (52 feet) were treated with robot-assisted percutaneous reduction and screw fixation (screw fixation group) and 35 (38 feet) with open reduction and plate fixation via the sinus tarsi approach (plate fixation group). The two groups were compared in terms of the operation duration, intraoperative blood loss, length of hospital stay and time to weight-bearing. The width, height, length, B?hler angle and Gissane angle of the calcaneus before surgery and at 1 day after surgery were compared. The Maryland foot and ankle function score, American Orthopedic Foot and Ankle Society (AOFAS) ankle and hindfoot function score, and visual analogue scale (VAS) score at 1, 3 months postoperatively, and at the last follow-up were compared. The incidence of postoperative complications and removal rate of internal fixation were also detected in the two groups.Results:All the patients were followed up for 9-60 months [(30.0±14.5)months]. There was no significant difference in the operation duration between the two groups ( P>0.05). The intraoperative blood loss, length of hospital stay and time to weight-bearing in the screw fixation group were 10.0(10.0, 20.0)ml, 7.0(5.0, 8.0)days and (5.0±0.8)weeks, which were significantly less or shorter than 30.0(20.0, 50.0)ml, 8.0(6.0, 11.0)days and (6.9±0.7)weeks in the plate fixation group ( P<0.05). The width, height, length, B?hler angle and Gissane angle of the calcaneus at 1 day after surgery were (43.4±4.2)mm, (46.2±4.0)mm, (81.6±5.1)mm, 27.1(20.4, 30.4)° and (113.4±10.1)° in the screw fixation group, which were all improved compared with those before surgery [(47.8±4.6)mm, (39.3±4.8)mm, (79.2±5.9)mm, 9.5(0.0,16.5)° and (119.3±13.4)°] ( P<0.01). The width, height, length and B?hler angle of the calcaneus at 1 day after surgery were (41.6±5.7)mm, (48.4±4.8)mm, (83.1±5.7)mm and 27.3(21.3, 31.6)° in the plate fixation group, which were all improved compared with those before surgery [(47.8±5.0)mm, (41.7±5.1)mm, (80.1±5.9)mm and 12.9(7.2,19.8)°] ( P<0.01), with no significant difference in the Gissane angle ( P>0.05). Before surgery and at 1 day postoperatively, no significant differences were found in the width, length, B?hler angle or Gissane angle of the calcaneus between the two groups ( P>0.05), while the height of the calcaneus in the screw fixation group was lower than that in the plate fixation group ( P<0.05). At 1 month after surgery and at the last follow-up, there were no significant differences in the Maryland foot and ankle function score, AOFAS ankle and hindfoot function score, and VAS score between the two groups ( P>0.05). At 3 months after surgery in the screw fixation group, the Maryland foot and ankle function score was (79.7±3.8)points, significantly higher than (74.7±2.8)points in the plate fixation group ( P<0.01); the AOFAS ankle and hindfoot function score was (77.1±5.0)points, significantly higher than (70.1±3.6)points in the plate fixation group ( P<0.01); the VAS score was 1.0(1.0, 2.0)points, significantly lower than 2.5(2.0, 3.0)points in the plate fixation group ( P<0.01). No significant difference was detected in the incidence of postoperative complications between the two groups ( P>0.05). The removal rate of internal fixation was 10% (5/52) in the screw fixation group, significantly lower than 29% (11/38) in the plate fixation group ( P<0.05). Conclusion:Compared with open reduction and plate fixation via the sinus tarsi approach, robot-assisted percutaneous reduction and screw fixation has the advantages of less intraoperative blood loss, shorter hospital stay, earlier weight-bearing exercises, better early functional recovery and pain relief, and lower internal fixation removal rate in the treatment of Sanders types II and III calcaneal fractures.
7.A multicenter clinical study on intramedullary vancomycin injection for preventing periprosthetic joint infection in total knee arthroplasty
Te LIU ; Jun FU ; Shiguang LAI ; Zhuo ZHANG ; Chi XU ; Lei GENG ; Yang LUO ; Peng REN ; Xin ZHI ; Quanbo JI ; Heng ZHANG ; Runkai ZHAO ; Haichao REN ; Ye TAO ; Qingyuan ZHENG ; Zeyu FENG ; Jianfeng YANG ; Yiming WANG ; Pengcheng LI ; Shuai LIU ; Wei CHAI ; Xiang LI ; Huiwu LI ; Xiaogang ZHANG ; Baochao JI ; Xianzhe LIU ; Xinzhan MAO ; Jianbing MA ; Xiangxiang SUN ; Jiying CHEN ; Yonggang ZHOU ; Jinliang WANG ; Weijun WANG ; Guoqiang ZHANG ; Ming NI
Chinese Journal of Orthopaedics 2025;45(12):803-811
Objective:To explore the safety and efficacy of intraosseous regional administration (IORA) of vancomycin for preventing infection in primary total knee arthroplasty (TKA).Methods:A total of 124 patients with knee osteoarthritis undergoing TKA between February 2024 and May 2024 at nine hospitals were enrolled. Preoperative infection prophylaxis involved either IORA (0.5 g vancomycin administered via intraosseous regional infusion before incision) or intravenous infusion (1 g vancomycin via peripheral vein). The IORA group included 15 males and 47 females with a median age of 66.5 years (range, 60.0-70.0 years), while the intravenous group included 14 males and 48 females with a median age of 66.0 years (range, 61.8-70.3 years) years. Intraoperative samples were collected including fat and synovium tissues after incision, before prosthesis placement, and after tourniquet release; distal femoral cancellous bone during femoral osteotomy; proximal tibial cancellous bone during tibial osteotomy; proximal intercondylar cancellous bone before prosthesis placement; and peripheral blood from non-infused arms at surgery initiation and after tourniquet release. Vancomycin concentrations were measured using liquid chromatography-tandem mass spectrometry. Vital sign changes were recorded from admission to 5~10 minutes post-IORA (IORA group) or post-incision (intravenous group). Follow-ups were conducted on postoperative day 1 and 3, and at 1 and 3 months, to document complications including IORA-related adverse events, periprosthetic joint infections, surgical site infections, red man syndrome, acute kidney injury, deep vein thrombosis and so on.Results:Vancomycin concentrations in bone, fat, and synovial tissue samples were significantly higher in the IORA group than in the intravenous group ( P<0.05), while vancomycin concentrations in blood samples were significantly lower in the IORA group than in the intravenous group ( P<0.05). Only 7.3%(41/558) of tissue samples in the IORA group had vancomycin concentrations below 2.0 μg/g (the minimum inhibitory concentration of vancomycin against coagulase-negative staphylococcus), compared to 59.3%(331/558) in the intravenous group (χ 2=11.285, P<0.001). In the intravenous group, 16.9%(21/124) of blood samples had vancomycin concentrations exceeding 15.0 mg/L (the threshold associated with a significantly increased risk of nephrotoxicity), while all concentrations in the IORA group were below this threshold, the difference was statistically significant (χ 2=22.943, P<0.001). There were no statistically significant difference ( P>0.05) in vital signs changes before and after vancomycin administration between the two groups. Two patients in the intravenous group experienced incision exudate, while no other related complications occurred in either group. Conclusions:Compared to the traditional intravenous infusion of 1 g vancomycin, intraosseous injection of a low dose (0.5 g) of vancomycin achieves higher local tissue concentrations in the knee joint with a lower incidence of adverse reactions and is safe for infection prophylaxis. Despite guidelines not recommending the routine use of vancomycin for preventing infection after primary TKA, intraosseous injection of 0.5 g vancomycin may be considered intraoperatively for primary TKA in the following scenarios: patients in medical institutions with a high prevalence of methicillin-resistant staphylococcus aureus (MRSA) infections, patients with potential preoperative MRSA colonization, or patients with cephalosporin allergy.
8.Cognitive inhibition characteristics of children with hearing impairment
Yonggang CAI ; Teng ZHANG ; Tianqin LIU ; Jianfen WANG ; Xiaohui GAO ; Xiaoxin DU
Chinese Journal of Rehabilitation Theory and Practice 2025;31(7):853-861
Objective To investigate the characteristics of cognitive inhibition in children with hearing impairment and the impact of different types of materials on their cognitive inhibition.Methods From June,2024 to January,2025,21 children with hearing impairment from Liaocheng Special Education School and 20 typically developing children from Guotun Town Central Primary School in Yanggu County,Liao-cheng were randomly selected.A directed forgetting task was used in a mixed experimental design.The experi-mental procedure was presented using Eprime 3.0,and recall performance was recorded through paper-and-pen-cil tests.Results Three children with hearing impairment and two typically developing children were dropped down.The children with hearing impairment scored significantly lower on recall tasks than the typically developing children(F=13.545,P<0.001).In the typically developing children,recall performance under the memory condition was sig-nificantly lower than under the forgetting condition(P<0.001).In the children with hearing impairment,there was no significant difference in recall performance between the memory condition and the forgetting condition(P>0.05).Regardless of whether the materials were letters or figures,all the children showed significantly high-er recall scores under the forgetting condition compared to the memory condition(P<0.01).Conclusion Children with hearing impairment exhibit weaker cognitive inhibition compared to typically developing chil-dren.The type of materials doesn't impact individuals'cognitive inhibition performance.
9.Efficacy and safety of dye-free submucosal injection solution for gastric endoscopic submucosal dissection
Wan LU ; Yonggang DING ; Ting ZHANG ; Lijuan MAO ; Jing CHEN ; Yuhong ZHOU ; Jun XIAO ; Wenjie LI ; Yaohui WANG ; Qide ZHANG
Chinese Journal of Digestive Endoscopy 2025;42(10):823-827
To evaluate the efficacy and safety of dye-free submucosal injection solution for gastric endoscopic submucosal dissection (ESD), a retrospective cohort study was performed on data of inpatients with early gastric cancer and precancerous lesions who underwent ESD at the Digestive Endoscopy Center of Jiangsu Province Hospital of Traditional Chinese Medicine from January to December 2020. Cases were divided into dye-free submucosal injection solution group (the observation group) and dye-containing solution group (the control group). A total of 108 cases met the eligibility criteria for analysis (39 VS 69). Baseline characteristics were comparable between the two groups ( P>0.05). Compared with the control group, the observation group showed similar median procedure time (30.5 min VS 35.0 min), median dissection speed (0.3 cm2/min VS 0.4 cm2/min), mean volume of injection solution used (39.2 mL VS 38.8 mL), en bloc resection rate [100.0% (39/39) VS 98.6% (68/69)], and curative resection rate [97.4% (38/39) VS 97.1% (67/69)] (all P>0.05). Postoperative stay was 3.0±0.8 days in the observation group and 3.2±0.8 days in the control group ( t=-0.908, P=0.378). Delayed bleeding occurred in 3 (7.7%) patients VS 2 (2.9%) patients ( P=0.349), and postoperative infection occurred in 3 (7.7%) patients VS 8 (11.6%) patients ( P=0.743), respectively. In gastric ESD, dye-free submucosal injection solution demonstrates efficacy comparable with dye-containing solution and does not appreciably increase the incidence of intraoperative or postoperative complications.
10.The use of transulnar approach after failure of transradial approach:its application in neurointerventional surgery and clinical feasibility
Guangliang FAN ; Chao SUN ; Yonggang MA ; Weibo LV ; Chao WANG
Journal of Interventional Radiology 2025;34(6):614-619
Objective To discuss the application of using transulnar approach(TUA),which is used as a complementary approach,after failure of transradial approach(TRA)in performing neurointerventional surgery,and to evaluate its clinical safety and feasibility.Methods A total of 189 consecutive patients,who were admitted to the Department of Neurointerventional Surgery,Affiliated Hospital of Binzhou Medical University of China from January to August of 2023 to receive treatment,were retrospectively collected.Of the 189 patients receiving neurointerventional surgery using TRA,23 adopted TUA puncture after failure of TRA puncture.The clinical data and the surgical materials were retrospectively collected.The diameter and depth of the radial artery and ulnar artery were measured by Doppler ultrasound before the operation.A 6 F catheter sheath was used to establish intraoperative manipulation access.After treatment,Doppler ultrasonography was used to assess the occurrence of arterial puncture-related complications and the patency of artery.The technical success rate and the puncture-related complications of TUA in neurointerventional surgery were calculated and analyzed.Results All the 23 patients underwent neurointerventional surgery.The preoperative mean ulnar artery diameter of the forearm and the depth of the ulnar radial artery measured by Doppler ultrasound were(2.1±0.3)mm and(5.6±1.0)mm respectively.The success rate of using TUA after failure of TRA for neurointerventional surgery was 91.3%(21/23)and no additional re-disinfection was required during the same procedure.In 2 patients,transfemoral artery approach(TFA)was used after failure of TUA.The causes of TUA failure included failure of guide wire insertion due to repeated puncturing(n=1)and failure of catheterization due to severe pain(n=1).Postoperative forearm angiography with manual-push injection method demonstrated that ulnar artery spasm occurred in S patients(34.8%).Postoperative re-examination of Doppler ultrasonography showed that no diminished pulse of the ulnar artery or hand ischemia was observed.One patient developed fat liquefaction at the puncture site,two patients developed hematoma around the puncture point,and one patient experienced transitory numbness around the puncture point.Thirty days after treatment,the follow-up check with Doppler ultrasonography showed that no ulnar artery occlusion was observed.Conclusion During the performance of neurointerventional surgery,the use of TUA after failure of TRA,which is used as a complementary approach,is clinically safe and feasible.However,because TUA carries several certain technical difficulties such as puncturing,catheterization,deeper position and smaller diameter of ulnar artery,diffuse arterial pulsation,etc.the operators need to go through a long learning curve before his or her puncturing success rate of ulnar artery can be surely improved.

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