Objective:To investigate the prognosis of patients with initially resectable gastric cancer liver metastasis (GCLM) who were treated by different modalities, and analyze the influencing factors for prognosis of patients.Methods:The retrospective cohort study was conducted. The clinicopathological data of 327 patients with initially resectable GCLM who were included in the database of a nationwide multicenter retrospective cohort study on GCLM based on real-world data from January 2010 to December 2019 were collected. There were 267 males and 60 females, aged 61(54,68)years. According to the specific situations of patients, treatment modalities included radical surgery combined with systemic treatment, palliative surgery combined with systemic treatment, and systemic treatment alone. Observation indicators: (1) clinical characteristics of patients who were treated by different modalities; (2) prognostic outcomes of patients who were treated by different modalities; (3) analysis of influencing factors for prognosis of patients with initially resectable GCLM; (4) screening of potential beneficiaries in patients who were treated by radical surgery plus systemic treatment and patients who were treated by palliative surgery plus systemic treatment. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the rank sum test. Count data were described as absolute numbers or percentages, and comparison between groups was conducted using the chi-square test. The Kaplan-Meier method was used to calculate survival rate and draw survival curve, and Log-Rank test was used for survival analysis. Univariate and multivariate analyses were conducted using the COX proportional hazard regression model. The propensity score matching was employed by the 1:1 nearest neighbor matching method with a caliper value of 0.1. The forest plots were utilized to evaluate potential benefits of diverse surgical combined with systemic treatments within the population. Results:(1) Clinical characteristics of patients who were treated by different modalities. Of 327 patients, there were 118 cases undergoing radical surgery plus systemic treatment, 164 cases undergoing palliative surgery plus systemic treatment, and 45 cases undergoing systemic treatment alone. There were significant differences in smoking, drinking, site of primary gastric tumor, diameter of primary gastric tumor, site of liver metastasis, and metastatic interval among the three groups of patients ( P<0.05). (2) Prognostic outcomes of patients who were treated by different modalities. The median overall survival time of the 327 pati-ents was 19.9 months (95% confidence interval as 14.9-24.9 months), with 1-, 3-year overall survival rate of 61.3%, 32.7%, respectively. The 1-year overall survival rates of patients undergoing radical surgery plus systemic treatment, palliative surgery plus systemic treatment and systemic treatment alone were 68.3%, 63.1%, 30.6%, and the 3-year overall survival rates were 41.1%, 29.9%, 11.9%, showing a significant difference in overall survival rate among the three groups of patients ( χ2=19.46, P<0.05). Results of further analysis showed that there was a significant difference in overall survival rate between patients undergoing radical surgery plus systemic treatment and patients undergoing systemic treatment alone ( hazard ratio=0.40, 95% confidence interval as 0.26-0.61, P<0.05), between patients undergoing palliative surgery plus systemic treatment and patients under-going systemic treatment alone ( hazard ratio=0.47, 95% confidence interval as 0.32-0.71, P<0.05). (3) Analysis of influencing factors for prognosis of patients with initially resectable GCLM. Results of multivariate analysis showed that the larger primary gastric tumor, poorly differentiated tumor, larger liver metastasis, multiple hepatic metastases were independent risk factors for prognosis of patients with initially resectable GCLM ( hazard ratio=1.20, 1.70, 1.20, 2.06, 95% confidence interval as 1.14-1.27, 1.25-2.31, 1.04-1.42, 1.45-2.92, P<0.05) and immunotherapy or targeted therapy, the treatment modality of radical or palliative surgery plus systemic therapy were independent protective factors for prognosis of patients with initially resectable GCLM ( hazard ratio=0.60, 0.39, 0.46, 95% confidence interval as 0.42-0.87, 0.25-0.60, 0.30-0.70, P<0.05). (4) Screening of potentinal beneficiaries in patients who were treated by radical surgery plus systemic treatment and patients who were treated by palliative surgery plus systemic treatment. Results of forest plots analysis showed that for patients with high-moderate differentiated GCLM and patients with liver metastasis located in the left liver, the overall survival rate of patients undergoing radical surgery plus systemic treatment was better than patients undergoing palliative surgery plus systemic treatment ( hazard ratio=0.21, 0.42, 95% confidence interval as 0.09-0.48, 0.23-0.78, P<0.05). Conclusions:Compared to systemic therapy alone, both radical and palliative surgery plus systemic therapy can improve the pro-gnosis of patients with initially resectable GCLM. The larger primary gastric tumor, poorly differen-tiated tumor, larger liver metastasis, multiple hepatic metastases are independent risk factors for prognosis of patients with initial resectable GCLM and immunotherapy or targeted therapy, the treatment modality of radical or palliative surgery plus systemic therapy are independent protective factors for prognosis of patients with initially resectable GCLM.

Objective:To evaluate the efficacy and safety of micropulse transscleral cyclophotocoagulation (MP-TSCPC) for refractory glaucoma.Methods:A prospective multicenter observational case series study was conducted.A total of 63 refractory glaucoma patients (67 eyes) who underwent MP-TSCPC treatment were enrolled at Zhongshan Ophthalmic Center, Sun Yat-sen University, Chengdu First People's Hospital (Chengdu Integrated TCM& Western Medicine Hospital), and Changsha Aier Eye Hospital from August 2022 to April 2023.Among these cases, there were 40 eyes (59.7%) with unreduced intraocular pressure (IOP) after glaucoma surgery, 4 eyes (6.0%) with secondary glaucoma after vitrectomy, 2 eyes (3.0%) with secondary glaucoma after keratoplasty, 8 eyes (11.9%) with neovascular glaucoma, 3 eyes (4.5%) with secondary glaucoma due to iridocorneal endothelial syndrome, 6 eyes (9.0%) with primary open-angle glaucoma and 4 eyes (6.0%) with primary angle-closure glaucoma.Best corrected visual acuity (BCVA) was measured using the ETDRS chart and the IOP was measured using the Goldmann applanation tonometry before and 6 months after the surgery.The usage of anti-glaucoma medications before and after surgery and postoperative complications were recorded.Surgical success rate was calculated and surgical success was defined as an IOP reduction of more than 20% from baseline or a reduction in the number of ocular hypotensive medications with no change in IOP.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Zhongshan Ophthalmic Center, Sun Yat-sen University (No.2022KYPJ225).Written informed consent was obtained from each subject.Results:There was a statistically significant overall difference in IOP at different time points before and after surgery ( F=60.10, P<0.001), and the IOP at different time points after surgery was significantly lower than that before surgery, with statistically significant differences (all at P<0.001).IOP reduction at 6 months after surgery was (43.7±20.7)%.The number of anti-glaucoma medications used postoperatively was 2(0, 3) types, which was significantly less than the 3(2, 3) types used preoperatively ( Z=-2.70, P=0.007).The 6-month postoperative BCVA (LogMAR) was 1.40(0.52, 2.70), which showed no significant change compared to the preoperative 1.40(0.70, 2.70) ( Z=-0.10, P=0.952).The surgical success rate was 83.6%(56/67) at 6 months postoperatively.Postoperative complications included mydriasis (11/67), conjunctival hemorrhage (11/67), mild anterior chamber inflammation (1/67), mild ciliary body detachment (3/67), local choroidal detachment (1/67), and cystoid macular edema (1/67), all of which were reversible after treatment. Conclusions:MP-TSCPC appears to be a safe and effective treatment option for refractory glaucoma.

Oxalate is an organic dicarboxylic acid that is a common component of plant foods.The kidneys are essential organs for oxalate excretion,but excessive oxalates may induce kidney stones.Jupiter micro-tubule associated homolog 2(JPT2)is a critical molecule in Ca2+mobilization,and its intrinsic mecha-nism in oxalate exposure and kidney stones remains unclear.This study aimed to reveal the mechanism of JPT2 in oxalate exposure and kidney stones.Genetic approaches were used to control JPT2 expression in cells and mice,and theJPT2 mechanism of action was analyzed using transcriptomics and untargeted metabolomics.The results showed that oxalate exposure triggered the upregulation of JPT2,which is involved in nicotinic acid adenine dinucleotide phosphate(NAADP)-mediated Ca2+mobilization.Tran-scriptomic analysis revealed that cell adhesion and macrophage inflammatory polarization were inhibited by JPT2 knockdown,and these were dominated by phosphatidylinositol 3-kinase(PI3K)/AKT signaling,respectively.Untargeted metabolomics indicated that JPT2 knockdown inhibited the produc-tion of succinic acid semialdehyde(SSA)in macrophages.Furthermore,JPT2 deficiency in mice inhibited kidney stones mineralization.In conclusion,this study demonstrates that oxalate exposure facilitates kidney stones by promoting crystal-cell adhesion,and modulating macrophage metabolism and in-flammatory polarization via JPT2/PI3K/AKT signaling.

Objective:To examine the impact of varied surgical treatment strategies on the prognosis of patients with initial resectable gastric cancer liver metastases (IR-GCLM).Methods:This is a retrospective cohort study. Employing a retrospective cohort design, the study selected clinicopathological data from the national multi-center retrospective cohort study database, focusing on 282 patients with IR-GCLM who underwent surgical intervention between January 2010 and December 2019. There were 231 males and 51 males, aging ( M(IQR)) 61 (14) years (range: 27 to 80 years). These patients were stratified into radical and palliative treatment groups based on treatment decisions. Survival curves were generated using the Kaplan-Meier method and distinctions in survival rates were assessed using the Log-rank test. The Cox risk regression model evaluated HR for various factors, controlling for confounders through multivariate analysis to comprehensively evaluate the influence of surgery on the prognosis of IR-GCLM patients. A restricted cubic spline Cox proportional hazard model assessed and delineated intricate associations between measured variables and prognosis. At the same time, the X-tile served as an auxiliary tool to identify critical thresholds in the survival analysis for IR-GCLM patients. Subgroup analysis was then conducted to identify potential beneficiary populations in different surgical treatments. Results:(1) The radical group comprised 118 patients, all undergoing R0 resection or local physical therapy of primary and metastatic lesions. The palliative group comprised 164 patients, with 52 cases undergoing palliative resections for gastric primary tumors and liver metastases, 56 cases undergoing radical resections for gastric primary tumors only, 45 cases undergoing palliative resections for gastric primary tumors, and 11 cases receiving palliative treatments for liver metastases. A statistically significant distinction was observed between the groups regarding the site and the number of liver metastases (both P<0.05). (2) The median overall survival (OS) of the 282 patients was 22.7 months (95% CI: 17.8 to 27.6 months), with 1-year and 3-year OS rates were 65.4% and 35.6%, respectively. The 1-year OS rates for patients in the radical surgical group and palliative surgical group were 68.3% and 63.1%, while the corresponding 3-year OS rates were 42.2% and 29.9%, respectively. A comparison of OS between the two groups showed no statistically significant difference ( P=0.254). Further analysis indicated that patients undergoing palliative gastric cancer resection alone had a significantly worse prognosis compared to other surgical options ( HR=1.98, 95% CI: 1.21 to 3.24, P=0.006). (3) The size of the primary gastric tumor significantly influenced the patients′ prognosis ( HR=2.01, 95% CI: 1.45 to 2.79, P<0.01), with HR showing a progressively increasing trend as tumor size increased. (4) Subgroup analysis indicates that radical treatment may be more effective compared to palliative treatment in the following specific cases: well/moderately differentiated tumors ( HR=2.84, 95% CI 1.49 to 5.41, P=0.001), and patients with liver metastases located in the left lobe of the liver ( HR=2.06, 95% CI 1.19 to 3.57, P=0.010). Conclusions:In patients with IR-GCLM, radical surgery did not produce a significant improvement in the overall prognosis compared to palliative surgery. However, within specific patient subgroups (well/moderately differentiated tumors, and patients with liver metastases located in the left lobe of the liver), radical treatment can significantly improve prognosis compared to palliative approaches.

Objective:To examine the impact of varied surgical treatment strategies on the prognosis of patients with initial resectable gastric cancer liver metastases (IR-GCLM).Methods:This is a retrospective cohort study. Employing a retrospective cohort design, the study selected clinicopathological data from the national multi-center retrospective cohort study database, focusing on 282 patients with IR-GCLM who underwent surgical intervention between January 2010 and December 2019. There were 231 males and 51 males, aging ( M(IQR)) 61 (14) years (range: 27 to 80 years). These patients were stratified into radical and palliative treatment groups based on treatment decisions. Survival curves were generated using the Kaplan-Meier method and distinctions in survival rates were assessed using the Log-rank test. The Cox risk regression model evaluated HR for various factors, controlling for confounders through multivariate analysis to comprehensively evaluate the influence of surgery on the prognosis of IR-GCLM patients. A restricted cubic spline Cox proportional hazard model assessed and delineated intricate associations between measured variables and prognosis. At the same time, the X-tile served as an auxiliary tool to identify critical thresholds in the survival analysis for IR-GCLM patients. Subgroup analysis was then conducted to identify potential beneficiary populations in different surgical treatments. Results:(1) The radical group comprised 118 patients, all undergoing R0 resection or local physical therapy of primary and metastatic lesions. The palliative group comprised 164 patients, with 52 cases undergoing palliative resections for gastric primary tumors and liver metastases, 56 cases undergoing radical resections for gastric primary tumors only, 45 cases undergoing palliative resections for gastric primary tumors, and 11 cases receiving palliative treatments for liver metastases. A statistically significant distinction was observed between the groups regarding the site and the number of liver metastases (both P<0.05). (2) The median overall survival (OS) of the 282 patients was 22.7 months (95% CI: 17.8 to 27.6 months), with 1-year and 3-year OS rates were 65.4% and 35.6%, respectively. The 1-year OS rates for patients in the radical surgical group and palliative surgical group were 68.3% and 63.1%, while the corresponding 3-year OS rates were 42.2% and 29.9%, respectively. A comparison of OS between the two groups showed no statistically significant difference ( P=0.254). Further analysis indicated that patients undergoing palliative gastric cancer resection alone had a significantly worse prognosis compared to other surgical options ( HR=1.98, 95% CI: 1.21 to 3.24, P=0.006). (3) The size of the primary gastric tumor significantly influenced the patients′ prognosis ( HR=2.01, 95% CI: 1.45 to 2.79, P<0.01), with HR showing a progressively increasing trend as tumor size increased. (4) Subgroup analysis indicates that radical treatment may be more effective compared to palliative treatment in the following specific cases: well/moderately differentiated tumors ( HR=2.84, 95% CI 1.49 to 5.41, P=0.001), and patients with liver metastases located in the left lobe of the liver ( HR=2.06, 95% CI 1.19 to 3.57, P=0.010). Conclusions:In patients with IR-GCLM, radical surgery did not produce a significant improvement in the overall prognosis compared to palliative surgery. However, within specific patient subgroups (well/moderately differentiated tumors, and patients with liver metastases located in the left lobe of the liver), radical treatment can significantly improve prognosis compared to palliative approaches.

With high incidence, high disability rate and serious impact on patients' quality of life, advanced primary angle-closure glaucoma (PACG) with cataract is a severe eye disease in China and its main treatment method is surgery.Phacoemulsification cataract extraction and intraocular lens implantation (PEI) combined with trabeculectomy has been used to treat advanced PACG with cataract, but there are many postoperative complications.Recently, combined PEI, goniosynechialysis (GSL) and goniotomy (GT) has been proven to be a safe and effective surgical treatment for advanced PACG with cataract.At present, the combined PEI+ GSL+ GT surgery has been widely applied, but there is still a lack of uniform standards for its clinical application.Therefore, it is necessary to formulate a detailed and complete recommendation of the surgical procedures for PEI+ GSL+ GT, to standardize its application in clinical practice.Based on the analysis of the existing problems, some glaucoma experts in China have formulated detailed and complete operation norms, as well as expert recommendations on surgical indications and contraindications, anesthetic methods, surgical techniques and perioperative medication to standardize the application process of PEI+ GSL+ GT in clinical practice.

Objective:To evaluate the preliminary effectiveness and safety of surgical peripheral iridectomy (SPI) combined with goniosynechilysis (GSL) and goniotomy (GT) in the treatment of advanced primary angle-closure glaucoma (PACG).Methods:A multicenter observational case series study was performed.Thirty-five eyes of 27 patients with advanced PACG, who underwent SPI+ GSL+ GT with a follow-up of at least 6 months, were included from August 2021 to January 2022 at Zhongshan Ophthalmic Center, Handan City Eye Hospital, Shijiazhuang People's Hospital, West China Hospital of Sichuan University, and the Third Affiliated Hospital of Chongqing Medical University.The mean follow-up time was 9(7, 10) months.Pre- and post-operative best corrected visual acuity (BCVA) and intraocular pressure (IOP) were measured with an ETDRS chart and a Goldmann applanation tonometer, respectively.The number of anti-glaucoma medications applied before and after surgery was recorded, and the complications after surgery were analyzed.Success rate of surgery was calculated.Complete surgical success was defined as an IOP of 5-18 mmHg (1 mmHg=0.133 kPa) and 20% reduction from baseline without anti-glaucoma medication or reoperation.Qualified success was defined as achieving criterion of complete success under anti-glaucoma medications.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Zhongshan Ophthalmic Center, Sun Yat-sen University (No.2021KYPJ177). Written informed consent was obtained from each subject.Results:The mean preoperative IOP was (30.83±8.87)mmHg, which was significantly decreased to (15.69±3.70)mmHg at 6 months after the surgery ( t=8.588, P<0.001), with a 44.00% (34.78%, 60.00%) decline of 13.00(8.00, 21.00)mmHg.The median number of anti-glaucoma medications was significantly reduced from 2(0, 3) preoperatively to 0 (0, 1) postoperatively ( Z=-3.659, P<0.001). The mean preoperative and postoperative 6-month BCVA were 0.80(0.63, 1.00) and 0.80(0.60, 1.00), respectively, showing no significant difference ( Z=-0.283, P=0.777). Complete surgical success rate was 62.86%(22/35), and the qualified success rate was 91.43%(32/35). Surgical complications mainly included hyphema (6/35), IOP spike (3/35), and shallow anterior chamber (4/35). There was no vision-threatening complication. Conclusions:SPI+ GSL+ GT is preliminarily effective and safe in the treatment of advanced PACG, which provides a new option for PACG.

Objective:To identify the risk factors associated with postoperative adjuvant chemotherapy in patients with stage I gastric cancer and establish nomograms model based on risk factors.Methods:In this retrospective case-control study, 161 cases with stage Ⅰ primary gastric adenocarcinoma were included who underwent gastrectomy at the Department of General Surgery of the First Medical Center of Chinese PLA General Hospital from January to December in 2020, including 129 male cases and 32 females cases, with the average age of (59.90±0.80) years. Among them, 41 cases were treated with postoperative adjuvant chemotherapy (chemotherapy group), while 120 cases who did not receive postoperative adjuvant chemotherapy (no chemotherapy group). Univariate and multivariate Logistic regression analyses were used to identify the risk factors of adjuvant chemotherapy in stage Ⅰ gastric cancer patients and establish the nomograms predictive model. ROC curve and calibration curve were used to evaluate the performance of the model.Results:Multivariate analysis revealed that primary tumor site, tumor size, T stage, N stage lymph-vascular tumor embolus or perineural invasion were the independent risk factors of postoperative adjuvant chemotherapy for stage Ⅰ gastric cancer( P<0.05). The ROC curve indicated that area under the curve (AUC) of the multivariate model was 0.91(95% CI: 0.86-0.97). The calibration curve showed that probability predicted by nomograms was consistent with the actual situation(C-index: 0.91). Conclusions:The tumor located in the proximal stomach, tumor size>2 cm, T 2, N 1, lymph-vascular tumor embolus or perineural invasion maybe be the risk factors for chemotherapy decision in stage Ⅰ gastric cancer patients. The established model has good predictive ability for postoperative chemotherapy of stage Ⅰ gastric cancer patients, which might provide reference for the selection of clinical decisions in this part of patients.

Objective:To evaluate the clinical value of nanopore targeted sequencing (NTS) in pathogens detection in urinary tract by comparing the results of different tests performed on the same urine sample.Methods:The results of NTS and urine culture test collected from 326 patients in the Department of Urology of People's Hospital of Wuhan University from July 2020 to June 2021 were retrospectively analyzed. There were 224 males and 102 females. The average age was (56.88 ± 14.58)years old. χ 2 test and Student’s test and Wilcoxon's sign rank test were used to analyze the differences of the pathogen detection rate, pathogen types results and detection time consuming between NTS and urine culture. The clinical value of the NTS in rapid detection of urinary pathogens was evaluated. Results:Among 326 hospitalized patients, the urinary tract microbes’ detecting rate of NTS was significantly higher than that of urine culture[67.80%(221/326)vs. 23.93%(78/326), χ2=130.25, P<0.01]. The uropathogens detecting rate of NTS was significantly higher than that of urine culture[54.29%(177/326)vs. 23.31%(76/326), χ2=38.95, P<0.01]. The number of urinary tract microbes detected by NTS was significantly higher than that of urine culture ( Z=11.49, P<0.01), the number of uropathogens was significantly higher than that of urine culture ( Z=9.67, P<0.01). The detection time of NTS and urine culture positive samples was (24.29±2.65) h and (49.28±11.30) h, the difference was statistically significant ( t =39.48, P<0.01). The results obtained by using NTS and urine culture were consistent in 135 (41.41%) samples. In 150 (46.01%) samples, NTS could detect the urinary tract microbes while urine culture cannot find, of which 112 cases (34.36%) were uropathogenic. In 27 cases (8.28%), more pathogens were detected by NTS except those from urine culture. In 6 cases (1.84%) re-detecting NTS after antibiotic therapy, the number of reads of primary uropathogen decreased gradually with the growth of colonizing bacteria or opportunistic pathogens appeared in the end. Re-examinations of urine culture could verify the results of NTS detection on admission in 5 cases (1.53%). NTS in 2 cases (0.61%) could cover the uropathogens of subsequent several urine cultures. Conclusions:NTS has the advantages of rapid, sensitive and comprehensive detection of urinary tract infection pathogens. When urine culture is not yet reported or even negative, NTS already has a certain clinical reference value and can be used as an effective supplement to urine culture, which is conducive to the comprehensive judgment of the patient's condition.

Objective:To compare the performance and surgical outcomes of domestic single-use digital flexible ureteroscopes with reusable digital flexible ureteroscopes in treatment of upper urinary stones.Methods:A prospective, single-blind, multicenter and randomized controlled study was performed from September 2018 to June 2019. Eligible patients were randomly assigned, in a ratio of 1∶1, to either experimental group or control group. The inclusion criteria for the study were: aged 18-75 years, solitary upper urinary stone with stone size between 0.8 and 2.0 cm and CT value less than 1 400 HU, negative preoperative urine culture and normal renal function. Exclusion criteria included: patients with acute urinary tract infection, intransitable urethral strictures, impassable ureteropelvic junction obstructions, systemic hemorrhagic disease, coagulation function abnormalities or bleeding tendency, severe hypertension or cardiopulmonary insufficiency, severe hip malformation and difficulty in meeting the demand of operation position and pregnant and lactation women. The device used in the experimental group was a domestic single-use digital flexible ureteroscope, and the device used in the control group was an imported Olympus digital flexible ureteroscope. The qualified rate of clinical comprehensive evaluation (including image quality and operational performance), the rate of device failure, the stone-free rate and the occurrence rate of adverse events (including increase in urine red blood cell and white blood cell counts, postoperative hematuria, nausea, vomiting, dizziness, and fever) in the two groups were recorded.Results:A total of 186 eligible study cases were collected from the People's Hospital of Wuhan University, the First Affiliated Hospital of Xiamen University, and the First Affiliated Hospital of Guangzhou Medical University. 90 cases in the final experimental group and 88 cases in the control group completed the trial and were included in the evaluation. There were no statistically significant differences among age [(48.40±11.36) vs. (47.40±12.53)years old, P=0.594], male to female ratio (62/28 vs. 56/32, P =0.874), BMI [(24.8±2.1) kg/m 2 vs. (25.1±2.0)kg/m 2,P =0.331], hydronephrosis (no/slight vs. mild/severe) (62/28 vs. 65/23, P =0.874), stone location and stone size [(12.8±4.7) mm vs. (11.9±5.2) mm, P =0.227]. There were no significant differences in terms of qualified rate of clinical comprehensive evaluation [98.9% (89/90) vs. 100.0% (88/88), P =0.991], lithotripsy success rate [84.4% (76/90) vs. 84.1% (74/88), P =0.888], device failure/defect rate (both 0%), and the incidence of adverse events [50.0% (45/90) vs. 52.0% (51/88), P =0.894]. The highest incidence of adverse events in two groups was the increase of red blood cells and white blood cells of routine urine after operation. There was no serious adverse event in the experimental group and 1 serious adverse event in the control group. Conclusions:There was no significant difference in image quality, device failure/defect rate, lithotripsy success rate, and adverse event rate between single-use digital flexible ureteroscopes and reusable digital flexible ureteroscopes for lithotripsy of upper ureteral and pelvic stones. Domestic single-use digital flexible ureteroscopes have good safety and effectiveness in the treatment and microscopy of upper urinary tract stones.