1.Research on the multi-dimensional value assessment framework for new antidiabetic drugs to support evidence-informed medical insurance decision-making
Feifei YAN ; Jingyu CHEN ; Jiaran CHEN ; Chen PAN ; Guohua WANG ; Jinsong GENG
China Pharmacy 2025;36(13):1563-1567
		                        		
		                        			
		                        			OBJECTIVE To establish a multi-dimensional value assessment framework for new antidiabetic drugs based on multi-criteria decision analysis theory, thus providing a theoretical framework and methodology for evidence-informed medical insurance decision-making. METHODS Firstly, multi-dimensional evidence was searched and obtained to provide reliable data for the establishment of the framework. Secondly, in terms of the obtained evidence, the value assessment framework was preliminarily constructed. Its structure, main core criteria, and contextual criteria were determined through focus group discussion. Finally, the criteria and sub-criteria of the framework and their weights were further determined, reasons for inclusion of sub-criteria and the reasonableness of rating scores were evaluated, and methods of assessment were optimized through expert consultation. RESULTS The multi-dimensional value assessment framework for new antidiabetic drugs was composed of core criteria and contextualized criteria, which could be used for quantitative and qualitative value assessment of new drugs, respectively. The core criteria consisted of five dimensions, with affordability (6.31) having the highest weighting score, followed by comparative effectiveness (6.20), comparative safety (6.01), cost-effectiveness (5.89), and quality of evidence (5.46). After the normalization of weight within sub-criteria, the budget impact on medical insurance had the highest standardized weight, followed by the control of glycated hemoglobin and patient affordability. The contextual criteria included two dimensions, i. e., innovation and equity. CONCLUSIONS The assessment framework integrates evidence, stakeholders’ values, and decision contexts to enable a multi- dimensional and evidence-based assessment of the value of new antidiabetic drugs.
		                        		
		                        		
		                        		
		                        	
2.Characteristics of human rhinovirus co-infections observed in 2019-nCoV positive patients in Hangzhou from 2021 to 2022
Shi CHENG ; Xinfen YU ; Feifei CAO ; Yinyan ZHOU ; Jincao PAN
Chinese Journal of Experimental and Clinical Virology 2024;38(3):299-303
		                        		
		                        			
		                        			Objective:To investigate the co-infection and phylogenetic analysis of human rhinovirus (HRV) in 2019 novel coronavirus (2019-nCoV) positive samples.Methods:Ten common respiratory viruses, including HRV were detected by real-time fluorescence quantitative polymerase chain reaction (qPCR) in 7 213 samples of 2019-nCoV positive cases and the co-infection characteristics were analyzed. The VP4/VP2 gene fragment of HRV was amplified and sequenced.Phylogenetic trees were constructed.Results:HRV accounted for 1.34% of the 2019-nCoV positive samples (97/7 213), followed by common coronavirus (0.50%, 36/7 213). The co-infection rate of HRV in 2019-nCoV positive samples was significantly different from that of other viruses ( χ2=318.09, P<0.001). There was significant difference in HRV co-infection rate among different age groups ( χ2=36.77, P<0.001), the peak was in<18 years age group. The co-infection rate of HRV had no significant difference in different seasons. The VP4/VP2 gene fragments of 39 HRV strains (40.21%, 39/97) were successfully sequenced and made phylogenetic analysis. There were 10 strains of HRV-A, 9 strains of HRV-B and 20 strains of HRV-C. Seventeen subtypes were identified, of which B6 (66.67%, 6/9) and C15 (70%, 14/20) were the most prevalent and other subtypes were scattered. Conclusions:The co-infection rate of HRV in patients with 2019-nCoV infection was the highest. The highest co-infection rate was in<18 years age group. Group A, B, and C of HRV were found in 2019-nCoV positive samples, and serotypes present diversity.
		                        		
		                        		
		                        		
		                        	
3.The characteristics of total bile acid in carotid atherosclerosis patients with different traditional Chinese medicine constitution
Ning HOU ; Xin LI ; Binbin PAN ; Peng WANG ; Feifei LU
China Modern Doctor 2024;62(31):4-7
		                        		
		                        			
		                        			Objective To explore the differences of total bile acid in carotid atherosclerosis(CAS)patients with different traditional Chinese medicine(TCM)constitution.Methods CAS patients who were treated in Tai'an Municipal Hospital from December 2022 to May 2023 were selected,clinical data of patients were collected and TCM constitution was identified,and differences in serum total bile acid among patients with different TCM constitutions were analyzed.Results A total of 212 CAS patients were included,including 151 patients with biased constitution.The top 3 biased constitution included yang-deficiency constitution(49 cases,23.1%),qi-depression constitution(25 cases,11.8%),blood-stasis constitution(19 cases,9.0%).The body mass index of patients with yin-deficiency constitution was significantly lower than that of other patients(P<0.05).The total bile acid level of patients with yang-deficiency constitution was significantly higher than that of patients with normal constitution,qi-depression constitution,blood-stasis constitution,phlegm-dampness constitution,humid heat constitution(P<0.05).Conclusion There are differences of total bile acid in CAS patients with different TCM constitution,and yang-deficiency constitution is closely related to total bile acid metabolism.
		                        		
		                        		
		                        		
		                        	
4.Expert consensus on perioperative basic prevention for lower extremity deep venous thrombosis in elderly patients with hip fracture (version 2024)
Yun HAN ; Feifei JIA ; Qing LU ; Xingling XIAO ; Hua LIN ; Ying YING ; Junqin DING ; Min GUI ; Xiaojing SU ; Yaping CHEN ; Ping ZHANG ; Yun XU ; Tianwen HUANG ; Jiali CHEN ; Yi WANG ; Luo FAN ; Fanghui DONG ; Wenjuan ZHOU ; Wanxia LUO ; Xiaoyan XU ; Chunhua DENG ; Xiaohua CHEN ; Yuliu ZHENG ; Dekun YI ; Lin ZHANG ; Hanli PAN ; Jie CHEN ; Kaipeng ZHUANG ; Yang ZHOU ; Sui WENJIE ; Ning NING ; Songmei WU ; Jinli GUO ; Sanlian HU ; Lunlan LI ; Xiangyan KONG ; Hui YU ; Yifei ZHU ; Xifen YU ; Chen CHEN ; Shuixia LI ; Yuan GAO ; Xiuting LI ; Leling FENG
Chinese Journal of Trauma 2024;40(9):769-780
		                        		
		                        			
		                        			Hip fracture in the elderly is characterized by high incidence, high disability rate, and high mortality and has been recognized as a public health issue threatening their health. Surgery is the preferred choice for the treatment of elderly patients with hip fracture. However, lower extremity deep venous thrombosis (DVT) has an extremely high incidence rate during the perioperative period, and may significantly increase the risk of patients′ death once it progresses to pulmonary embolism. In response to this issue, the clinical guidelines and expert consensuses all emphasize active application of comprehensive preventive measures, including basic prevention, physical prevention, and pharmacological prevention. In this prevention system, basic prevention is the basis of physical and pharmacological prevention. However,there is a lack of unified and definite recommendations for basic preventive measures in clinical practice. To this end, the Orthopedic Nursing Professional Committee of the Chinese Nursing Association and Nursing Department of the Orthopedic Branch of the China International Exchange and Promotive Association for Medical and Health Care organized relevant nursing experts to formulate Expert consensus on perioperative basic prevention for lower extremity deep venous thrombosis in elderly patients with hip fracture ( version 2024) . A total of 10 recommendations were proposed, aiming to standardize the basic preventive measures for lower extremity DVT in elderly patients with hip fractures during the perioperative period and promote their subsequent rehabilitation.
		                        		
		                        		
		                        		
		                        	
5.Surveillance of antifungal resistance in clinical isolates of Candida spp.in East China Invasive Fungal Infection Group from 2018 to 2022
Dongjiang WANG ; Wenjuan WU ; Jian GUO ; Min ZHANG ; Huiping LIN ; Feifei WAN ; Xiaobo MA ; Yueting LI ; Jia LI ; Huiqiong JIA ; Lingbing ZENG ; Xiuhai LU ; Yan JIN ; Jinfeng CAI ; Wei LI ; Zhimin BAI ; Yongqin WU ; Hui DING ; Zhongxian LIAO ; Gen LI ; Hui ZHANG ; Hongwei MENG ; Changzi DENG ; Feng CHEN ; Na JIANG ; Jie QIN ; Guoping DONG ; Jinghua ZHANG ; Wei XI ; Haomin ZHANG ; Rong TANG ; Li LI ; Suzhen WANG ; Fen PAN ; Jing GAO ; Lu JIANG ; Hua FANG ; Zhilan LI ; Yiqun YUAN ; Guoqing WANG ; Yuanxia WANG ; Liping WANG
Chinese Journal of Infection and Chemotherapy 2024;24(4):402-409
		                        		
		                        			
		                        			Objective To monitor the antifungal resistance of clinical isolates of Candida spp.in the East China region.Methods MALDI-TOF MS or molecular methods were used to re-identify the strains collected from January 2018 to December 2022.Antifungal susceptibility testing was performed using the broth microdilution method.The susceptibility test results were interpreted according to the breakpoints of 2022 Clinical and Laboratory Standards Institute(CLSI)documents M27 M44s-Ed3 and M57s-Ed4.Results A total of 3 026 strains of Candida were collected,65.33%of which were isolated from sterile body sites,mainly from blood(38.86%)and pleural effusion/ascites(10.21%).The predominant species of Candida were Candida albicans(44.51%),followed by Candida parapsilosis complex(19.46%),Candida tropicalis(13.98%),Candida glabrata(10.34%),and other Candida species(0.79%).Candida albicans showed overall high susceptibility rates to the 10 antifungal drugs tested(the lowest rate being 93.62%).Only 2.97%of the strains showed dose-dependent susceptibility(SDD)to fluconazole.Candida parapsilosis complex had a SDD rate of 2.61%and a resistance rate of 9.42%to fluconazole,and susceptibility rates above 90%to other drugs.Candida glabrata had a SDD rate of 92.01%and a resistance rate of 7.99%to fluconazole,resistance rates of 32.27%and 48.24%to posaconazole and voriconazole non-wild-type strains(NWT),respectively,and susceptibility rates above 90%to other drugs.Candida tropicalis had resistance rates of 29.55%and 26.24%to fluconazole and voriconazole,respectively,resistance rates of 76.60%and 21.99%to posaconazole and echinocandins non-wild-type strains(NWT),and a resistance rate of 2.36%to echinocandins.Conclusions The prevalence and species distribution of Candida spp.in the East China region are consistent with previous domestic and international reports.Candida glabrata exhibits certain degree of resistance to fluconazole,while Candida tropicalis demonstrates higher resistance to triazole drugs.Additionally,echinocandins resistance has emerged in Candida albicans,Candida glabrata,Candida tropicalis,and Candida parapsilosis.
		                        		
		                        		
		                        		
		                        	
6.Epidemiological analysis of influenza in Jiading District, Shanghai, 2013‒2023
Wanqi CHEN ; Feifei MA ; Guanghe WANG ; Haoquan WANG ; Senmiao DENG ; Yuhua MAO ; Pan SUN ; Weixin CHEN
Shanghai Journal of Preventive Medicine 2024;36(12):1130-1136
		                        		
		                        			
		                        			ObjectiveTo analyze the epidemiological characteristics and trends of influenza‑like illness (ILI) in Jiading District from 2013 to 2023, to explore the prevalence patterns, so as to provide a scientific basis for a better prevention and control of influenza. MethodsData of ILI cases, pathogenetic surveillance results and pathogen detection data from influenza surveillance network laboratories in Jiading District from 2013 to 2023 were collected for statistical analysis. ResultsFrom 2013 to 2023, the overall proportion of medical visits for ILI cases in Jiading District was 2.70%. ILI cases were mainly distributed in the age group of ≥25 years, with a seasonal prevalence characteristic, mainly concentrated in the winter and spring, with an occasional small peak in the summer. A total of 12 423 specimens were tested for pathogenetic surveillance and monitoring, 3 651 of which were tested positive for nucleic acid detection, with a positive rate of 29.39%. The dominant strain was influenza A (H3N2) virus, accounting for 55.05%. There were statistical significant differences in the positive detection rates by different streets and townships(χ2=24.73,P<0.05). The influenza network laboratory isolated and cultured influenza viruses from 3 154 nucleic acid‑positive samples sent by national influenza sentinel surveillance hospitals using 2 methodsMadin‑Darby canine kidney (MDCK) cells and specific pathogen free (SPF) chicken embryos, respectively, with a total isolation rate of 39.51%, and the isolation rate of MDCK cells (35.45%) was higher than that of SPF chicken embryos (5.36%). From 2013 to 2023, a total of 14 ILI outbreaks were reported in Jiading District, mainly in primary schools, kindergartens and secondary schools. ConclusionInfluenza in Jiading District, Shanghai, is mainly prevalent in the winter and spring, with different subtypes of influenza viruses alternating or co⁃circulating in different monitoring year. It is recommended to promote influenza vaccination, further improve influenza prevention and control measures, enhance health promotion to the age group of ≥25 years in winter and spring, and strengthen surveillance and monitoring on ILI outbreaks in collective units such as primary schools and childcare institutions, so as to reduce the disease burden. 
		                        		
		                        		
		                        		
		                        	
7.The Clinical Manifestation, Executive Dysfunction, and Caregiver Strain in Subthreshold Attention-Deficit/Hyperactivity Disorder
Yajing TANG ; Sunwei QIU ; Haimei LI ; Feifei SI ; Mengjie ZHAO ; Min DONG ; Meirong PAN ; Xinxin YUE ; Lu LIU ; Qiujin QIAN ; Yufeng WANG
Psychiatry Investigation 2023;20(9):789-798
		                        		
		                        			 Objective:
		                        			Subthreshold attention-deficit/hyperactivity disorder (ADHD) has been suggested to be a “morbid condition” which also needs medical attention. 
		                        		
		                        			Methods:
		                        			The present study recruited 89 children with subthreshold ADHD (sADHD), 115 children with diagnosed ADHD (cADHD), and 79 healthy controls (HC) to explore the clinical manifestation, executive functions (EFs) of sADHD, and the caregiver strain. The clinical manifestation was evaluated through clinical interviews and parent-reports. Executive functions were assessed both experimentally and ecologically. Caregiver strain was measured by a parent-reported questionnaire. 
		                        		
		                        			Results:
		                        			For the clinical manifestation, both sADHD and cADHD indicated impairments when compared with HC. The comorbidities and the scaled symptoms indicated that the externalizing behaviors were relatively less serious in sADHD than cADHD, whereas the internalizing behaviors between two groups were comparable. For ecological EFs, sADHD scored between cADHD and HC in inhibition and working memory. For experimental EFs, sADHD was comparable to cADHD in inhibition, shifting, and was worse than cADHD in verbal working memory. For the caregiver strain, all scores of sADHD were between that in cADHD and that in HC. 
		                        		
		                        			Conclusion
		                        			Our present findings supported the suggestion of subthreshold ADHD as “morbid condition,” which should be treated with caution in clinical practice, especially for the internalizing behaviors and some key components of EFs. 
		                        		
		                        		
		                        		
		                        	
8.Effects of immune activation on synaptic structure and DISC1 gene expression in cortex of rat with schizophrenia
Chanyuan Pan ; Jing Zhang ; Xinyuan Wang ; Feifei Feng ; Linli Feng
Acta Universitatis Medicinalis Anhui 2023;58(10):1695-1700
		                        		
		                        			Objective    :
		                        			To  study the effect of lipopolysaccharide  ( LPS) -induced  immune  system  activation on syn- aptic structure and DISC1.  
		                        		
		                        			Methods    :
		                        			40  rats were divided  into 4 groups,which were PBS group,PBS + MK-801  group,LPS group and LPS + MK-801  group.The  rats in  LPS  group and LPS + MK-801 group were administrated with LPS solution  (0. 2  mg / kg,i.p.BIW)  for 6 times in total, the rats in PBS group and PBS + MK801 group were administrated with PBS.At the third time when the rats were  administrated with LPS solution,the rats in PBS + MK-801 group and LPS + MK-801 group were administrated with  MK-801 solution  (0. 5  mg / kg,i.p.BIW) for a total of 4 times,the rats in PBS group and LPS group were adminis- trated with saline.The head shaking and the open field tests were then evaluated in the rats.Immediately,the rats  were sacrificed,and their brain were saved for testing. RT-qPCR , Golgi staining,immunohistochemistry and ELISA  kits were used to detect DISC1 gene expression,dendritic spine status,microglia activation and inflammatory cytokine content in cortex,respectively. gene expression in the cortex of rats with schizophrenia.
		                        		
		                        			Results     :
		                        			 Compared with the PBS group,the expression of DISC1  gene of the  rats in the PBS + MK-801 group increased  (P <0. 01) ,the  score of head shaking increased  (P <0. 01) ,and  the  distance of the open field increased  (P <0. 000  1) ; As well  as the LPS + MK-801  group,compared with the LPS  group,the expression of DISC1 gene increased  (P<0. 000  1) ,the head shaking score and the distance of the open  field increased  (P<0. 000  1) . In addition,compared with the PBS + MK-801 group,the expression of DISC1 gene, the shaking head score and the open field distance of the LPS + MK-801  group further improved  (P <0. 000  1) .   Furthermore,compared with PBS group and PBS + MK-801 group,the content of iba1 in the cortex of LPS group and  LPS + MK-801  group  significantly  increased   (P <0. 05 ) ,the  content  of  inflammatory  cytokines  significantly  increased  (P<0. 05) ,and the length and density of dendritic spines significantly decreased  (P<0. 05) .
		                        		
		                        			Conclusion
		                        			The activation of the immune system induced by LPS can contribute to the susceptibility of schizophrenia model, and the possible mechanism is that it cooperates with MK-801 to increase the expression of DISC1 gene,which ulti- mately leads to abnormal mental behavior in rats.
		                        		
		                        		
		                        		
		                        	
9.Comparison of techniques between concave distraction or convex resection in the treatment of congenital cervicothoracic scoliosis
Shuo CAO ; Xin CHEN ; Feifei ZHOU ; Yanbin ZHAO ; Yinze DIAO ; Shengfa PAN ; Fengshan ZHANG ; Li ZHANG ; Tian XIA ; Weishi LI ; Yu SUN
Chinese Journal of Orthopaedics 2022;42(7):413-425
		                        		
		                        			
		                        			Objective:To compare the technique between concave distraction and convex resection in the treatment of congenital cervicothoracic scoliosis and evaluate its curative effect.Methods:Data of congenital cervicothoracic scoliosis patients from January 2010 to January 2020 were collected, among which 5 were males and 3 were females. The patients' age was 12.5±4.5 years old (range 6-20 years old). One case had C 7 wedged vertebra, 4 cases had T 1 hemivertebra and unbalanced vertebra, 2 cases had T 2 hemivertebra and 1 case had fused facet joint and wedged lamina in T 1. All patients had different degrees of vertebra fusion. Convex resection technique (one stage anterior and posterior combined hemivertebrae resection and annular osteotomy) was used to treat 4 cases before 2015; Concave distraction technique (A combination of anterior and posterior release, intervertebral space and facet space distraction, cage placed and fusion) was used to treat 4 cases after 2015 and 2 of them had 2 segments distraction. Perioperative neurological, vascular and wound related complications were recorded. The main parameters were structure Cobb angle, cephalic and caudal compensatory Cobb angle, mandibular incline, neck tilt, shoulder balance and head shift were measured pre-operation, post-operation and at the last follow-up. Results:All patients' surgeries were completed successfully. In convex resection group, the duration of surgery was 201±100 min (range 113-300 min) per vertebra, the estimated blood loss was 294±153 ml (range 100-450 ml) per vertebra, the hospital stay was 14±3 d (range 11-18 d) and follow up time was 51±11 months (range 36-60 months). In concave distraction group, the duration of surgery was 117±14 min (range 101-129 min) per vertebra, the estimated blood loss was 119±36 ml (range 85-167 ml) per vertebra, hospital stay was 17±3 d (range 14-20 d) and follow up time was 28±21 months (range 12-60 months). Convex resection group had longer operation time and more blood loss per vertebra than concave distraction group. In convex resection group, structural Cobb angle was 45.1°±21.0° pre-operation and 22.7°±15.3° post-operation, which was corrected significantly ( Z=6.53, P=0.038). The correction rate was 54.8%±30.9%. Cephalic compensatory Cobb angle was 22.1°±8.2° pre-operation and 8.2°±5.8° post-operation, which was corrected significantly ( F=6.01, P=0.049). The correction rate was 66.8%±15.1%. Mandible incline was 7.8°±3.1° pre-operation and 3.5°±1.5° post-operation, which was corrected significantly ( F=8.02, P=0.018). The correction rate was 51.0%±29.7%. In concave distraction group, structural Cobb angle was 32.2°±27.2° pre-operation and 16.3°±16.7° post-operation, which was corrected significantly ( F=7.43, P=0.024) . The correction rate was 59.0%±24.7%. Caudal compensatory Cobb angle was 18.9°(17.2°, 32.1°) pre-operation and 9.5°±10.3° post-operation, which was corrected significantly ( Z=6.00, P=0.049). The correction rate was 64.0%±24.1%. Clavicle angle was 3.9°±2.3° pre-operation and 0.3°±0.4° post-operation, which was corrected significantly ( F=1.75, P=0.040). The correction rate was 97.0% (48.5%, 99.8%). There was no significant difference in the correction rate of all radiographic parameters between the two groups. At the last follow-up, the patients' appearance of head, neck and shoulder were improved compared with those before surgery. In convex resection group, 2 patients showed nerve root stimulation symptoms postoperatively on convex side. One patient developed C 5 nerve root palsy which weakened deltoid muscle and the other patients presented with reduced triceps muscle strength. In concave distraction group, one patient developed C 5 nerve root palsy on convex side. All these symptoms recovered by conservative treatment 3 months after operation. Conclusion:It is safe and effective to treat congenital cervicothoracic scoliosis with convex resection technique and concave distraction technique. The concave distraction technique has the advantages of more safety, less operating time, less blood loss and easier to perform and has a wider application prospect.
		                        		
		                        		
		                        		
		                        	
10.Risk factors of ureteral stricture after ureteroscopic holmium laser lithotripsy
Feifei PAN ; Sen MA ; Xuebiao SUN ; Jiawei MA
International Journal of Surgery 2022;49(6):387-392,F3
		                        		
		                        			
		                        			Objective:To investigate the ureteral stricture after ureteroscopic holmium laser lithotripsy in patients with ureteral calculi and its effect on prognosis.Methods:The clinical data of 406 patients who underwent ureteroscopic holmium laser lithotripsy in Nanjing Tongren Hospital from January 2018 to August 2019 were analyzed retrospectively, according to postoperative ureteral stricture, the patients were divided into stricture group ( n=28) and non-stricture group ( n=378). The independent risk factors of postoperative ureteral stricture in patients with ureteral calculi were evaluated by univariate and multivariate Logistic regression analysis, and the postoperative recurrence rate and prognosis of the two groups were compared.The nomogram model was constructed according to independent risk factors, and the accuracy of the model was verified by receiver operating characteristic (ROC) curve, GiViTI calibration band and clinical decision curve. Measurement data were expressed as mean±standard deviation ( ± s), comparison between groups used t-test, and comparison of count data between groups used Chi-square. Results:Univariate analysis showed that there were significant differences in course of ureteral calculi, stone diameter, polyp wrapping, degree of hydronephrosis, incarcerated stone, ureteral injury and operation time between non-stricture group and stricture group ( P<0.05). Multivariate Logistic regression analysis showed that the course of ureteral calculi, stone diameter, polyp wrapping, degree of hydronephrosis, incarcerated stone and ureteral injury were independent risk factors for postoperative ureteral stricture in patients with ureteral calculi ( P<0.05). The patients with ureteral calculi were followed up for 1 year by telephone, outpatient reexamination and medical record inquiry. During the follow-up period, 106 cases of ureteral calculi recurred. The recurrence rate of 1 year (21.43% vs 8.99%) and 2 years (35.71% vs 14.81%) in the stricture group was significantly higher than that in the non-stricture group, the differences were statistically significant ( χ2=4.54, 8.36, P<0.05). Compared with the non-stricture group, the physiological function score [(79.28±8.17) vs (65.22±10.53)], physiological function score [(78.54±9.33) vs (69.23±7.86)] and overall health score [(81.03±10.54) vs (70.43±7.38)] in the stricture group were significantly lower, the differences were statistically significant ( t=7.70, 5.29, 5.43, P<0.05). The area under curve of the constructed nomogram model ROC curve was 0.882 (95% CI: 0.774-0.928). In the 80%-90% confidence interval area of the GiViTI calibration curve belt, it does not pass through the 45° angle bisector ( P=0.176). The clinical decision curve indicates that the net benefit rate was high. Conclusions:The course of ureteral calculi, stone diameter, polyp wrapping, degree of hydronephrosis, incarcerated stone and ureteral injury are independent risk factors for postoperative ureteral stricture in patients with ureteral calculi. Clinicians should actively take intervention measures to reduce the incidence of postoperative ureteral stenosis, improve the prognosis and improve the quality of life of patients.
		                        		
		                        		
		                        		
		                        	
            

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