1.Evidence-based evaluation and hierarchical management of off-label use of 5-aminolevulinic acid in photodynamic therapy
Jing MA ; Tingting LIU ; Xiaoshuang GOU ; Xue YANG ; Chen LI ; Fang LIU ; Yao LIU
China Pharmacy 2026;37(8):1056-1061
OBJECTIVE To provide reference for medical institutions to establish the record management mode and review rules of off-label use of 5-aminolevulinic acid (ALA) in photodynamic therapy based on the level of evidence. METHODS All ALA-containing outpatient prescriptions in the rational drug use system in our hospital from January 1, 2024 to December 31, 2025 were retrospectively collected. Based on the drug instructions, the current status of off-label use of ALA in photodynamic therapy was identified . The relevant studies in Micromedex, PubMed, CNKI, Wanfang Data and other databases were systematically searched as the relevant evidence-based evidence of ALA off-label use. According to the Off-label Drug Use Filing Standard of the hospital,the evidence-based evaluation method was used to evaluate the evidence-based evidence of ALA off-label use and carry out hierarchical management. RESULTS A total of 1 803 effective prescriptions were included, of which 676 (37.49%) were off-label use, distributed in the dermatology department (564 prescriptions,83.43%) and the plastic surgery department (112 prescriptions,16.57%). All 676 prescriptions were off-indications medication, involving ten types of skin diseases, primarily including moderate to severe acne (39.94%), skin warts (25.44%), Bowen’s disease (11.98%), and others. According to evidence-based evidence,off-label uses such as moderate to severe acne, actinic keratosis, and Bowen’s disease were managed according to the evidence categoryⅠ orⅡ.The uses of extramammary Paget’s disease and rosacea were managed according to the evidence category Ⅲ.The uses of lichen sclerosus and keloids were managed according to the evidence category Ⅳ.The results of evidence-based evaluation showed that 92.01% of off-label use in our hospital had high-level evidence-based support ( evidence category was gradeⅠ-Ⅱ). CONCLUSIONS Off-label uses supported by high-level evidence, such as moderate to severe acne, skin warts, and Bowen’s disease, can be managed under filing category Ⅰ or Ⅱ. For the use of lichen sclerosus and keloids, evidence-based evidence is insufficient and should be strictly restricted.The vast majority of ALA off-label use in our hospital has sufficient evidence-based basis.
2.Clinical and Immunological Characteristics of Elderly Onset Rheumatoid Arthritis
Zhengfang LI ; Chanyuan WU ; Mengsi MA ; Tingting LI ; Xue WU ; Xinyan MENG ; Sha ZHANG ; Lijun WU
Medical Journal of Peking Union Medical College Hospital 2025;16(1):59-64
To investigate the clinical features and peripheral blood immune cell subsets ofelderly (≥60 years old) onset rheumatoid arthritis (EORA) patients. The patients with rheumatoid arthritis (RA) who were hospitalized in the Department of Rheumatology and Immunology of the People's Hospital of Xinjiang Uygur Autonomous Region from March 2023 to December 2023 were selected as the study objects. The demographic data, clinical characteristics, extra-articular manifestations and laboratory examination results of the patients were collected. The patients were divided into EORA group and young adult (< 60 years old)onset rheumatoid arthritis (YORA) group, and the clinical features and peripheral blood immunological indexes of the two groups were compared. A total of 187 RA patients with an average age of (62.1±12.0) years were enrolled, including 89 patients in the EORA group and 98 patients in the YORA group. Compared with YORA group, EORA group had a higher proportion of male patients(39.3% Compared with YORA, EORA has higher male proportion, joint disease degree and disease activity. EORA is prone to interstitial lung disease, anemia and high inflammation, and the level of peripheral blood NK cells is higher.
3.Effect of urushiol primer on remineralization and adhesion properties of demineralized dentin
Tingting BAI ; Fei WEI ; Guangdi SUN ; Xue CHEN ; Song ZHU
Journal of Jilin University(Medicine Edition) 2025;51(1):133-142
Objective:To explore the promotion effect on remineralization of demineralized dentin of urushiol primer applicated in acid-etch-rinse adhesives,and to clarify its impact on the longevity of dentin adhesion.Methods:Ninety-six freshly extracted,caries-free third molars were selected to prepare the dentin specimens.Following acid etching with 37%phosphoric acid gel,the specimens were randomly divided into blank control group,0.3%,0.7%,1.0%,and 1.5%urushiol groups,and positive control group(acetone solvent).The treated samples were placed in modified simulated body fluids for remineralization for 14 and 28 d.Attenuated total reflection Fourier transform infrared spectroscopy(ATR-FTIR)was used to detect the relative mineralization mass of minerals in the dentinal tubules in various groups,and X-ray Diffractometery and Energy Dispersive spectrometer were used to analyze the dentin surface material compositions in various groups.Scanning electron microscope(SEM)was used to observe the surface morphology of the specimens in various groups,Vickers hardness tester was used to measure the microhardness of the dentin surface in various groups,and microtensile strength(μTBS)was used to examine the effect of the bond strengthes in various groups.Results:Compared with blank control group,the conversion rate of adhesive double bonds by primer in positive control group was decreased,but the difference was not significant(P>0.05);but the conversion rates of adhesive double bonds by primer in 0.3%,0.7%,1.0%,and 1.5%urushiol groups were increased(P<0.05).The SEM results revealed that at 14 and 28 d,compared with bland control group,a minimal membranous deposit in dentinal tubules was seen in positive control group,minimal mineralization displayed in 0.3%urushiol group,significant deposition of loose mineral particles with blocking the tubule orifices was found in 0.7%urushiol group,noticeable mineral precipitates exhibited in 1.0%urushiol group,and relatively empty dentinal tubules were seen in 1.5%urushiol group.The microhardness results showed that at 14 d after remineralization,compared with blank control group,the microhardness in positive control group showed no significant improvement(P>0.05),while the differences in 0.3%,0.7%,1.0%and 1.5%urushiol groups were statistically significant(P<0.05);at 14 d after remineralization compared with positive control group,the microhardness of dertin in 0.7%and 1.0%urushiol groups were increased(P<0.05);at 28 d after remineralization,compared with blank control and postive control groups,the microhardness in urushiol groups were significantly increased(P<0.05),espectially in 0.7%to 1.5%urushiol groups(P<0.05).In the μTBS test,at 14 d after remineralization,compared with postive control group,theμTBS in 0.3%,0.7%,1.0%and 1.5%urushiol groups were increased(P<0.05);at 28 d after remineralization,the μTBS in blank control group was the lowest;compared with blank control group,there was no significant difference in the μTBS in postive control group(P>0.05);compared with positive control group,the μTBS in 0.3%,0.7%,1.0%,and 1.5%urushiol groups were increased(P<0.05),espectially in 0.7%,1.0,and 1.5%urushiol groups(P<0.05).Conclusion:Natural-derived urushiol,as a novel primer,can pretreat the demineralized dentin substrates,and facilitate collagen cross-linking within the dentin matrix;moreover,it leverages the phenolic hydroxyl groups within its structure to attact calcium and phosphate ions,envelope dentin collagen fibers to promote remineralization,in order to enhance the strength of the resin-dentin bonding interface.
4.Status quo investigation of health management behaviors in elderly patients with T2DM complicating chronic complications under health ecology theory and influencing factors analysis
Lyuping REN ; Xiao SUN ; Tingting CHEN ; Rongrong ZHOU ; Xue WANG ; Wei DENG ; Peipei ZHANG
Chongqing Medicine 2025;54(1):195-201
Objective To investigate the status quo of health management behaviors in elderly patients with type 2 diabetes mellitus(T2DM)complicating chronic complications and the influencing factors based on health ecology theory.Methods The convenience sampling method was used to select elderly patients with T2DM complicating chronic complications in the Shanghai City from January to July 2022 as the respondents.Based on the health ecology theory,the five aspects of personality traits,psychological and behavioral traits,family and community interpersonal networks,living and working conditions and policy environment were in-vestigated.The Pearson correlation coefficient was used to analyze the correlation of various variables.The hi-erarchical linear regression was used to analyze the influencing factors of health management behaviors in eld-erly patients with T2DM complicating chronic complications.Results A total of 272 questionnaires were dis-tributed and 264 valid questionnaires were recovered,with an effective recovery rate of 97.06%(264/272).There were statistically significant differences in DSMB-Oscores among the patients with different chronic complications number,sleep quality,per capita monthly household income and medical payment methods(P<0.05).The DSMB-Oscore in elderly patients with T2DM complicating chronic complications was positively correlated with HLSCP,DES,PACIC and CIRS scores(P<0.05),and negatively correlated with the PAID-5 score(P<0.05).Conclusion The health management behaviors of elderly patients with T2DM complicating chronic complications is jointly affected and acted by many factors,and it is necessary to identify and manage the related influencing factors from different aspects and different levels.
5.AI and ROSS-assisted ultra-early thalamic hematoma drainage in elderly patients with minor thalamus and internal capsule hematoma and severe hypoperfusion in the internal capsule area
Ruishan ZHANG ; Weimin ZHANG ; Xianghui ZHANG ; Sibo XUE ; Jian SONG ; Kai WANG ; Tingting SHEN ; Yan ZHOU ; Hongbin KU
Chinese Journal of Neuromedicine 2025;24(5):488-495
Objective:To evaluate the application value of artificial intelligence (AI) and robot of stereotactic surgery (ROSS)-assisted ultra-early thalamic hematoma drainage in elderly patients with minor thalamus and internal capsule hematoma (TICH) and severe hypoperfusion in the internal capsule area.Methods:A retrospective cross-sectional study was performed; 278 patients with TICH and severe hypoperfusion in the internal capsule area identified by AI medical imaging diagnostic system were enrolled from Department of Neurosurgery, Xingtai Central Hospital from January 2023 to August 2024. Among them, 134 patients (study group) received AI and ROSS-assisted ultra-early thalamic hematoma drainage, and 144 patients (control group) received drug treatment. Differences in baseline data and therapy efficiency between the two groups of patients were compared. Multivariate Logistic regression analysis was used to screen the independent influencing factors for prognosis in the study group 180 days after onset (good prognosis: modified Rankin scale scores of 0-3).Results:Compared with the control group, the study group had significantly higher Glasgow coma scale (GCS) score and regional cerebral blood flow (rCBF) in the internal capsule area 14 days after onset, and statistically higher therapy efficiency and good prognosis rate 180 days after onset ( P<0.05). In the study group, 84 patients had a good prognosis and 50 had a poor prognosis 180 days after onset; compared with the good prognosis group, the poor prognosis group had significantly higher proportion of patients with hyper-homocysteinemia history, lower GCS score on admission, larger volume of thalamic hematoma, higher proportions of patients with combined intraventricular hemorrhage and shunt-dependent hydrocephalus, and lower rCBF in the internal capsule area on admission ( P<0.05). Multivariate Logistic regression analysis showed that thalamic hematoma volume ( OR=2.527, 95% CI: 1.504-4.247, P<0.001), combined intraventricular hemorrhage ( OR=2.325, 95% CI: 1.460-3.703, P<0.001), shunt dependent hydrocephalus ( OR=2.371, 95% CI: 1.267-4.078, P=0.006), and rCBF in the internal capsule area on admission ( OR=0.672, 95% CI: 0.314-1.025, P<0.001) were independent risk factors for prognosis of patients in the study group. Conclusion:AI and ROSS-assisted ultra-early thalamic hematoma drainage is effective for elderly patients with minor TICH and severe hypoperfusion in the internal capsule area; patients with large thalamic hematoma volume, combined intraventricular hemorrhage, shunt-dependent hydrocephalus, and low rCBF in the internal capsule area on admission are prone to have a poor prognosis.
6.Efficacy of baricitinib combined with ruxolitinib cream in the treatment of six patients with progressive nonsegmental vitiligo: a clinical observation
Tingting ZHU ; Weiran LI ; Zhaobing PAN ; Hao LIU ; Xianfa TANG ; Caihong ZHU ; Hequn HUANG ; Dawei DUAN ; Ruochen ZHANG ; Xiaojian CHEN ; Yang WANG ; Qian XUE ; Jurui ZHANG ; Lijing YANG ; Xuejun ZHANG ; He HUANG ; Bo ZHANG
Chinese Journal of Dermatology 2025;58(9):856-859
Objective:To evaluate the efficacy and safety of baricitinib combined with ruxolitinib cream in the treatment of progressive nonsegmental vitiligo.Methods:Clinical data were retrospectively collected from patients with progressive nonsegmental vitiligo in Boao Super Hospital. All the patients were treated with oral baricitinib daily (2 mg/day for patients weighing ≤ 50 kg; 4 mg/day for those > 50 kg) in combination with topical application of ruxolitinib cream twice daily for 24 consecutive weeks. Disease severity was assessed using the facial vitiligo area scoring index (F-VASI) and total body VASI (T-VASI) at baseline, week 12, and week 24. Adverse reactions were monitored throughout the treatment course.Results:Six patients with progressive nonsegmental vitiligo were collected, including 3 males and 3 females, aged 26 - 42 years, with the disease duration ranging from 0.5 to 25 years. At week 12, 3 patients achieved a 50% ~ < 75% improvement in facial vitiligo lesions (F-VASI 50), 1 patient achieved F-VASI 75 (75% ~ < 90% improvement), and 1 patient achieved T-VASI 50; at week 24, 4 patients achieved F-VASI 50, 1 patient achieved F-VASI 75, 1 patient achieved F-VASI 90 (≥ 90% improvement), and 3 patients achieved T-VASI 50. During the treatment, upper respiratory infection occurred in 1 patient, acne in 1 patient, pruritus in 2 patients, elevation of total cholesterol levels in 2 patients, and increase of high-density lipoprotein levels in 2 patients. No severe adverse events were observed during the treatment.Conclusion:The combination therapy with baricitinib and ruxolitinib cream may have potential efficacy and safety in the treatment of progressive nonsegmental vitiligo.
7.Epidemiological characteristics and influencing factors of diabetes and pre-diabetes among adult residents in Hainan Province
Juan JIANG ; Changfu XIONG ; Dingwei SUN ; Ying LIU ; Hongying WU ; Xingren WANG ; Xiaohuan WANG ; Tingting OU ; Xue ZHOU ; Shizhu MENG ; Saiku CHEN ; Kanglin WANG ; Lu ZHONG ; Bin HE
Chinese Journal of Epidemiology 2025;46(4):700-708
Objective:To describe epidemiological characteristics and their influencing factors of diabetes and pre-diabetes among adult residents in Hainan Province and provide a theoretical basis to develop epidemic prevention and control strategies for diabetes.Methods:This study used a two-stage unequal proportion cluster sampling method, and 32 857 subjects (≥18 years old) were collected from 24 cities/counties/districts in Hainan Province. All the subjects were investigated with questionnaires, physical examination, and laboratory tests from January to June 2023. The χ2 and Mantel-Haenszel trend χ2 tests were used to analyze the data. Multivariate logistic regression was used to analyze the factors influencing diabetes and pre-diabetes. SPSS 23.0 software was used to analyze the data. Results:The crude prevalence of diabetes and pre-diabetes in adult residents of Hainan Province were 18.1% and 22.8%, while the weighted rates were 13.7% and 20.7%, respectively. The results of multivariate logistic regression analysis showed that: aging (30-39 years old: OR=2.65, 95% CI: 2.06-3.41; 40-49 years old: OR=5.64, 95% CI: 4.40-7.24; 50- 59 years old: OR=9.88, 95% CI: 7.71-12.67; 60-69 years old: OR=18.34, 95% CI: 14.28-23.55; 70-79 years old: OR=21.30, 95% CI: 16.41-27.65; 80 years old and above: OR=24.13, 95% CI: 17.94-32.46), nationality (Li minority group: OR=1.50, 95% CI: 1.38-1.63; other ethnic groups: OR=1.53, 95% CI: 1.20-1.94), urban ( OR=1.12, 95% CI: 1.04-1.21), central obesity ( OR=2.14, 95% CI: 2.01-2.29), higher frequency of alcohol consumption (5-7 day/week: OR=1.24, 95% CI: 1.11-1.38), physical inactivity ( OR=1.09, 95% CI: 1.02-1.17) were risk factors for diabetes, while aging (30-39 years old: OR=1.53, 95% CI: 1.31-1.79; 40-49 years old: OR=2.36, 95% CI: 2.01-2.76; 50-59 years old: OR=3.03, 95% CI: 2.58-3.55; 60-69 years old: OR=4.22, 95% CI: 3.58-4.97; 70-79 years old: OR=5.05, 95% CI: 4.23-6.04; 80 years old and above: OR=6.08, 95% CI: 4.86-7.61), nationality: (Li minority group: OR=1.18, 95% CI: 1.10-1.28; other ethnic groups: OR=1.40, 95% CI: 1.14-1.71), urban ( OR=1.12, 95% CI: 1.04-1.19), central obesity ( OR=1.72, 95% CI: 1.62-1.83), higher frequency of alcohol consumption (1-4 day/week: OR=1.12, 95% CI: 1.01-1.23; 5-7 day/week: OR=1.35, 95% CI: 1.22-1.49) were risk factors for pre-diabetes. Conclusions:The epidemic situation of diabetes and pre-diabetes among adult residents in Hainan Province was not optimistic. In order to control the development of abnormal blood glucose, measures and targeted health education should be carried out to strengthen the screening, treatment, and management of people with abnormal blood glucose among different populations.
8.Application and clinical outcomes of transperineal multi-modal image-fusion targeted prostate biopsy in a day-surgery model
Hong WANG ; Yifang TAO ; Feng LI ; Xu ZHAO ; Fang LIU ; Tingting ZHAO ; Jiaying YU ; Li XUE
Chinese Journal of Urology 2025;46(10):769-773
Objective:To explore the feasibility and clinical outcomes of transperineal prostate multimodal image fusion-targeted biopsy under the day surgery model.Methods:Clinical data of 258 patients who underwent transperineal prostate biopsy at the Second Affiliated Hospital of Xi’an Jiaotong University between December 2022 and June 2024 were retrospectively analyzed. Patients were divided into two groups,and the experimental group( n = 141)underwent transperineal prostate multi-modal image-fusion targeted biopsy in the day-surgery mode,with age of(70.0 ± 8.8)years,median prostate-specific antigen(PSA)level of 11.10(7.63?17.06)ng/ml,and median Prostate Imaging Reporting and Data System(PI-RADS)score of 4(3,5). The control group( n = 117)underwent traditional transperineal systematic biopsy,with age of(69.3 ± 7.4)years,median PSA of 25.20(16.18-54.40)ng/ml,and median PI-RADS score of 4(3,5). The experimental group was given the day surgery mode:preoperatively,multiparametric magnetic resonance imaging(mpMRI)of the prostate was multimodally fused with ultrasound images,the location of target lesions in the prostate was manually mapped,and a targeted biopsy plan was developed. Intraoperatively,under ultrasound guidance,precise puncture was performed at the lesion sites,followed by systematic biopsy. After the operation,the patients were observed for 4-6 hours,and could be discharged if there were no obvious abnormalities,with the total hospitalization time within 24 hours. For the control group,the conventional biopsy mode was used. Intraoperatively,under ultrasound guidance,the standard 12-core transperineal systematic biopsy protocol was adopted,and sampling was conducted according to the anatomical regions of the prostate(base,midportion,apex,transition zone,and peripheral zone)to cover the entire gland. Patients in this group required routine hospitalization,with a hospital stay of 3-5 days. Operative time,intraoperative pain Numerical Rating Scale(NRS)score,complications within one week postoperatively,treatment costs,overall prostate cancer detection rate,and clinically significant prostate cancer(csPCa,defined as Gleason score ≥ 7 or pathological stage ≥ T 2b)detection rate were compared between the two groups. Results:All procedures were successfully completed without special incidents. The operative time was(13.49 ± 2.00)min in the experimental group and(13.05 ± 2.89)min in the control group,showing no significant difference( P > 0.05). The intraoperative pain NRS scores were(3.01 ± 1.17)and(3.10 ± 1.25)in the experimental and control groups,respectively,with no significant difference( P > 0.05). Pathological examination revealed that the overall prostate cancer detection rates were 46.8%(66/141)in the experimental group and 42.7%(50/117)in the control group,while the csPCa detection rates were 35.5%(50/141)and 31.6%(37/117),respectively. The differences were not statistically significant( P > 0.05). The complication rate was 6.4%(9/141)in the experimental group(including 2 cases of acute urinary retention,3 hematuria,3 fever,and 1 sepsis)and 6.0%(7/117)in the control group(including 3 acute urinary retention,1 hematuria,2 fever,and 1 sepsis),with no significant difference( P > 0.05). All complications improved after symptomatic treatment. The treatment costs were(4 063.25 ± 67.26)yuan in the experimental group and(5 185.14 ± 469.15)yuan in the control group,demonstrating a statistically significant difference( P < 0.05). Conclusions:Transperineal prostate multimodal image fusion-targeted biopsy can be safely performed under the day surgery model,offering advantages including a relatively high detection rate for csPCa,low complication rate,and better cost-effectiveness.
9.Analysis of changes in ocular surface biology and visual quality in diabetic dry eye patients under different influencing factors
Juan TANG ; Hua XUE ; Qingqing ZHAO ; Lingling ZHENG ; Dan ZHANG ; Silun XIONG ; Yuru ZHANG ; Tingting ZHANG ; Xue YANG ; Dan YE ; Xiaofeng YANG ; Tao LI
Recent Advances in Ophthalmology 2025;45(7):554-561
Objective To investigate the factors that influence ocular surface biology and visual acuity in individuals with diabetic dry eye(DDE)and analyze how these factors contribute to changes in visual quality.Methods Based on the disease duration,fasting blood glucose(FBG),and glycated hemoglobin(HbA1c)levels of patients with type 2 diabe-tes mellitus(T2DM),the DDE patients were divided into different groups.Logistic regression analysis was used to identify influencing factors related to ocular surface biology and visual quality in each group of DDE patients.Tear film stability was evaluated based on the tear film rupture time(BUT),Schirmer I test(SIt),and ocular surface disease index(OSDI).Lip-iview? Surface interferometers were used to measure tear film lipid layer thickness(LLT),meibomian gland loss rate(MGP),meibomian gland opening number(MGYLS),and meibomian gland secretion score(MGYSS).Wavefront aber-rometry was used to measure corneal wavefront aberration values at 4 mm and 6 mm pupil diameters.Ocular response ana-lyzer(ORA)was adopted to analyze corneal hysteresis(CH)and corneal resistance factor(CRF).Moreover,ELISA ex-periment to evaluate the trend of changes in inflammatory factors in tears.Results Logistic regression analysis revealed that T2DM duration,smoking history,FBG,HbA1c,total cholesterol(TC),triglycerides(TG),OSDI score,LLT,BUT,SIt,MGP,MGYLS,MGYSS,total higher-order aberrations,spherical aberration,coma aberration,trefoil aberration,tumor necrosis factor-α,interleukin-6,matrix metalloproteinase-9,receptor for advanced glycation end products,and insu-lin were all influencing factors for the risk of DDE(all P<0.05).As the T2DM course prolonged and FBG or HbA1 c levels rose,tear film-related indicators(LLT,BUT,and SIt)and meibomian gland-related indicators(MGYLS and MGYSS)inpa-tients gradually decreased,while OSDI scores and MGP gradually increased(all P<0.05).As the T2DM course prolonged and FBG or HbA1c levels rose,the total higher-order aberrations,spherical aberration,coma aberration,and trefoil aber-ration in DDE patients under 4 mm and 6 mm pupil diameters gradually increased;Meanwhile,best corrected visual acuity,corneal hysteresis,and corneal resistance factor gradually decreased;The contents of tumor necrosis factor-α,interleukin-6,matrix metalloproteinase-9,receptor for advanced glycation end products,and insulin in tears all gradually increased,while mucin-5AC gradually decreased(all P<0.05).Conclusion With the prolongation of T2DM duration and the in-crease of FBG or HbA1c,the ocular surface inflammatory response in DDE patients gradually worsens,corneal biological function decreases,and visual quality deteriorates.Timely systemic and local interventions are of great significance for im-proving dry eye symptoms and visual quality in DDE patients.
10.Risk prediction model construction of postoperative pulmonary infection in lung cancer patients undergoing four-level thoracoscopic surgery based on machine learning algorithms
Jiajia MA ; Xiaoxin LIU ; Bei XUE ; Jing FENG ; Zhengmin ZHANG ; Liping YAO ; Xinxing JU ; Tingting LIU
Journal of Clinical Medicine in Practice 2025;29(6):111-117
Objective To develop and validate risk prediction models utilizing five machine learning algorithms for assessing postoperative pulmonary infection(PPI)risk in lung cancer patients undergoing grade Ⅳ thoracoscopic surgery.Methods A retrospective cohort study included 2,380 lung cancer patients who underwent grade Ⅳ thoracoscopic surgery at a tertiary hospital in Shanghai(January 2022 to June 2024).Patients were stratified into training(n=1,665)and validation(n=715)cohorts.Five machine learning algorithms—Logistic regression(LR),artificial neural network(ANN),support vector machine(S VM),random forest(RF),and extreme gradient boosting(XGB)—were employed to construct predictive models.A nomogram was developed for clinical utility.Results Among 2,380 patients,226(9.5%)developed PPI.The Least Absolute Shrinkage and Se-lection Operator(LASSO)regression identified eight predictive variables:daily cigarette consumption,diabetes history,preoperative diffusing capacity,maximal tumor diameter,24-hour postoperative chest drainage volume,perioperative oral nutritional supplementation(ONS),postoperative urinary cathe-terization,and intraoperative pleural adhesion severity.All models demonstrated robust discrimina-tion,with area under the curve(AUC)values ranging from 0.862 to 0.947.The XGB model a-chieved superior performance(AUC=0.947,95%CI,0.937 to 0.962),followed closely by the LR model(AUC=0.926,95%CI,0.918 to 0.933).Conclusion Machine learning-based algo-rithms models effectively stratify PPI risk in lung cancer patients following grade Ⅳ thoracoscopic surgery.The derived nomogram provides a practical tool for perioperative risk management by healthcare providers.

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