- 1. Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China;
- 2. Department of Anesthesiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, P. R. China;
- 3. Department of Thoracic Surgery, Institute of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China;
With the aging population and the widespread implementation of lung cancer screening programs, an increasing number of elderly patients are undergoing curative lung resection. Due to diminished physiological reserve and complex comorbidities, this demographic exhibits a significantly higher incidence of severe perioperative complications (defined as Clavien-Dindo grade≥Ⅲ), which adversely affects both perioperative safety and long-term prognosis. In recent years, the research paradigm has shifted from univariate analysis toward multidimensional risk integration and the development of predictive models. This article systematically reviews the key risk factors for severe perioperative complications in elderly lung cancer patients, encompassing biological aging processes, frailty and sarcopenia, cardiopulmonary and renal functional reserves, inflammatory-immune and coagulation status, and perioperative interventions. Furthermore, it traces the evolution of risk assessment tools from traditional regression models to machine learning models that integrate multimodal data. The review also discusses common challenges in this field, including the standardization of outcome definitions, external validation, calibration assessment, and clinical translation. Future efforts should prioritize the deep integration of predictive tools with clinical decision support systems to establish a closed-loop care pathway from risk identification to stratified intervention, thereby effectively reducing complication rates and enhancing surgical outcomes for elderly lung cancer patients.
Copyright ? the editorial department of Chinese Journal of Clinical Thoracic and Cardiovascular Surgery of West China Medical Publisher. All rights reserved
| 1. | National Lung Screening Trial Research Team, Aberle DR, Adams AM, et al. Reduced lung-cancer mortality with low-dose computed tomographic screening. N Engl J Med, 2011, 365(5): 395-409. |
| 2. | de Koning HJ, van der Aalst CM, de Jong PA, et al. Reduced lung-cancer mortality with volume CT screening in a randomized trial. N Engl J Med, 2020, 382(6): 503-513. |
| 3. | Fernandez-Bustamante A, Parker RA, Frendl G, et al. Perioperative lung expansion and pulmonary outcomes after open abdominal surgery versus usual care in the USA (PRIME-AIR): a multicentre, randomised, controlled, phase 3 trial. Lancet Respir Med, 2025, 13(5): 447-459. |
| 4. | Volkert D, Delzenne N, Demirkan K, et al. Nutrition for the older adult-current concepts. Report from an ESPEN symposium. Clin Nutr, 2024, 43(8): 1815-1824. |
| 5. | Engel JS, Tran J, Khalil N, et al. A systematic review of perioperative clinical practice guidelines for care of older adults living with frailty. Br J Anaesth, 2023, 130(3): 262-271. |
| 6. | Tong BC, Bonnell LN, Habib RH, et al. The Society of Thoracic Surgeons 2024 risk models for lung cancer resection: continued refinement and improved outcomes. Ann Thorac Surg, 2025, 119(4): 777-785. |
| 7. | Brunelli A, Salati M, Rocco G, et al. European risk models for morbidity (EuroLung1) and mortality (EuroLung2) to predict outcome following anatomic lung resections: an analysis from the European Society of Thoracic Surgeons database. Eur J Cardiothorac Surg, 2017, 51(3): 490-497. |
| 8. | Garabinovic Z, Savic M, Colic N, et al. Artificial intelligence as a diagnostic tool in preoperative surgical planning for early non-small cell lung cancer: a single-center experience. J Clin Med, 2025, 14(21): 7609. |
| 9. | Chen Y, Chen D, Liu X, et al. Deep learning-driven multimodal integration of miRNA and radiomic for lung cancer diagnosis. Biosensors, 2025, 15(9): 610. |
| 10. | Kuang Q, Feng B, Xu K, et al. Multimodal deep learning radiomics model for predicting postoperative progression in solid stageⅠnon-small cell lung cancer. Cancer Imaging, 2024, 24(1): 140. |
| 11. | Dindo D, Demartines N, Clavien PA. Classification of surgical complications: a new proposal with evaluation in a cohort of 6336 patients and results of a survey. Ann Surg, 2004, 240(2): 205-213. |
| 12. | Trotti A, Colevas AD, Setser A, et al. CTCAE v3. 0: development of a comprehensive grading system for the adverse effects of cancer treatment. Semin Radiat Oncol, 2003, 13(3): 176-181. |
| 13. | Sato Y, Mizusawa J, Katayama H, et al. Validation of the Japan Clinical Oncology Group postoperative complications criteria against CTCAE for evaluation of postoperative complications (JCOG1903A). Eur J Surg Oncol, 2025, 51(6): 109669. |
| 14. | Katayama H, Kurokawa Y, Nakamura K, et al. Extended Clavien-Dindo classification of surgical complications: Japan Clinical Oncology Group postoperative complications criteria. Surg Today, 2016, 46(6): 668-685. |
| 15. | Liu Z, Kuo PL, Horvath S, et al. A new aging measure captures morbidity and mortality risk across diverse subpopulations from NHANES Ⅳ: a cohort study. PLoS Med, 2018, 15(12): e1002718. |
| 16. | Jiang J, Yin X, Kong S, et al. Associations of accelerated biological aging with intraoperative hypotension in major surgery: a multicenter cohort study of 116, 996 patients. Ann Med, 2025, 57(1): 2603045. |
| 17. | Soysal P, Stubbs B, Lucato P, et al. Inflammation and frailty in the elderly: a systematic review and meta-analysis. Ageing Res Rev, 2016, 31: 1-8. |
| 18. | Pan Y, Ma L. Inflammatory markers and physical frailty: towards clinical application. Immun Ageing, 2024, 21(1): 4. |
| 19. | Church S, Rogers E, Rockwood K, et al. A scoping review of the Clinical Frailty Scale. BMC Geriatr, 2020, 20(1): 393. |
| 20. | Rockwood K, Song X, MacKnight C, et al. A global clinical measure of fitness and frailty in elderly people. CMAJ, 2005, 173(5): 489-495. |
| 21. | McIsaac DI, Lee S, Fergusson D, et al. Home-based prehabilitation for older surgical patients with frailty: a randomized clinical trial. JAMA Surg, 2026, 161(2): 113-123. |
| 22. | Cruz-Jentoft AJ, Bahat G, Bauer J, et al. Sarcopenia: revised European consensus on definition and diagnosis. Age Ageing, 2019, 48(4): 601. |
| 23. | Han DJ, Na KJ, Yun T, et al. Effects of respiratory sarcopenia on the postoperative course in elderly lung cancer patient: a retrospective study. J Cardiothorac Surg, 2025, 20(1): 71. |
| 24. | Brunelli A, Charloux A, Bolliger CT, et al. ERS/ESTS clinical guidelines on fitness for radical therapy in lung cancer patients (surgery and chemo-radiotherapy). Eur Respir J, 2009, 34(1): 17-41. |
| 25. | Clark JM, Marrufo AS, Kozower BD, et al. Cardiopulmonary testing prior to lung resection: what are thoracic surgeons doing? Ann Thorac Surg, 2019, 108(4): 1006-1012. |
| 26. | Lee AH, Seyednejad N, Yang Y, et al. Analysis of pulmonary complications and predicted postoperative pulmonary function in oncologic lung resections. J Thorac Dis, 2024, 16(11): 7574-7581. |
| 27. | Axtell AL, David EA, Block MI, et al. Association between interstitial lung disease and outcomes after lung cancer resection. Ann Thorac Surg, 2023, 116(3): 533-541. |
| 28. | Writing Committee Members, Thompson A, Fleischmann KE, et al. 2024 AHA/ACC/ACS/ASNC/HRS/SCA/SCCT/SCMR/SVM guideline for perioperative cardiovascular management for noncardiac surgery: a report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. J Am Coll Cardiol, 2024, 84(19): 1869-1969. |
| 29. | Brunelli A, Kim AW, Berger KI, et al. Physiologic evaluation of the patient with lung cancer being considered for resectional surgery: diagnosis and management of lung cancer, 3rd ed: American College of Chest Physicians evidence-based clinical practice guidelines. Chest, 2013, 143(5 Suppl): e166S-e190S. |
| 30. | Chaudhry RA, Zarmer L, West K, et al. Obstructive sleep apnea and risk of postoperative complications after non-cardiac surgery. J Clin Med, 2024, 13(9): 2538. |
| 31. | Zhang X, Li X, Li Y, et al. Comparison of high-flow nasal cannula with conventional oxygen therapy for preventing postoperative hypoxemia in patients with lung resection surgery: a systematic review and meta-analysis. J Thorac Dis, 2024, 16(5): 2906-2917. |
| 32. | Yu Y, Xu S, Yan B, et al. Incidence and associations of acute kidney injury after general thoracic surgery: a system review and meta-analysis. J Clin Med, 2022, 12(1): 37. |
| 33. | O’Dell Duplechin M, Folds GT, Duplechin DP, et al. Prevention and management of perioperative acute kidney injury: a narrative review. Diseases, 2025, 13(9): 295. |
| 34. | Parikh S, Bentz T, Crowley S, et al. Perioperative blood management. J Clin Med, 2025, 14(11): 3847. |
| 35. | Casselman FPA, Lance MD, Ahmed A, et al. 2024 EACTS/EACTAIC guidelines on patient blood management in adult cardiac surgery in collaboration with EBCP. Eur J Cardiothorac Surg, 2024, 67(5): ezae352. |
| 36. | Lan H, Zhou L, Chi D, et al. Preoperative platelet to lymphocyte and neutrophil to lymphocyte ratios are independent prognostic factors for patients undergoing lung cancer radical surgery: a single institutional cohort study. Oncotarget, 2016, 8(21): 35301-35310. |
| 37. | Lopez-Pastorini A, Riedel R, Koryllos A, et al. The impact of preoperative elevated serum C-reactive protein on postoperative morbidity and mortality after anatomic resection for lung cancer. Lung Cancer, 2017, 109: 68-73. |
| 38. | Zhang H, Mao X, Xu J, et al. Risk factors for postoperative pulmonary complications in non-adenocarcinoma non-small cell lung cancer patients undergoing surgery after neoadjuvant therapy. Transl Lung Cancer Res, 2025, 14(2): 385-398. |
| 39. | Batchelor TJP, Rasburn NJ, Abdelnour-Berchtold E, et al. Guidelines for enhanced recovery after lung surgery: recommendations of the Enhanced Recovery After Surgery (ERAS?) Society and the European Society of Thoracic Surgeons (ESTS). Eur J Cardiothorac Surg, 2019, 55(1): 91-115. |
| 40. | Miskovic A, Lumb AB. Postoperative pulmonary complications. Br J Anaesth, 2017, 118(3): 317-334. |
| 41. | Lee HJ, Lee HW. Comprehensive strategies for preoperative pulmonary risk evaluation and management. Tuberc Respir Dis (Seoul), 2024, 88(1): 90-108. |
| 42. | Ke L, Cui S, Chen S, et al. Dynamics of D-dimer in non-small cell lung cancer patients receiving radical surgery and its association with postoperative venous thromboembolism. Thorac Cancer, 2020, 11(9): 2483-2492. |
| 43. | Dai W, Yang XJ, Zhuang X, et al. Reoperation for hemostasis within 24 hours can get a better short-term outcome when indicated after lung cancer surgery. J Thorac Dis, 2017, 9(10): 3677-3683. |
| 44. | Axtell AL, Gaissert HA, Bao X, et al. Predictors of venous thromboembolism after lung cancer resection. Ann Thorac Surg, 2024, 117(5): 998-1005. |
| 45. | Shargall Y, Wiercioch W, Brunelli A, et al. Joint 2022 European Society of Thoracic Surgeons and The American Association for Thoracic Surgery guidelines for the prevention of cancer-associated venous thromboembolism in thoracic surgery. Eur J Cardiothorac Surg, 2022, 63(1): ezac488. |
| 46. | Hachey KJ, Hewes PD, Porter LP, et al. Caprini venous thromboembolism risk assessment permits selection for postdischarge prophylactic anticoagulation in patients with resectable lung cancer. J Thorac Cardiovasc Surg, 2016, 151(1): 37-44. e1. |
| 47. | Cui S, Chen S, Li H, et al. Risk factors for venous thromboembolism and evaluation of the modified Caprini score in patients undergoing lung resection. J Thorac Dis, 2020, 12(9): 4805-4816. |
| 48. | Sterbling HM, Rosen AK, Hachey KJ, et al. Caprini risk model decreases venous thromboembolism rates in thoracic surgery cancer patients. Ann Thorac Surg, 2018, 105(3): 879-885. |
| 49. | Young RWC, Kucera J, Antevil JL, et al. Preoperative cardiopulmonary assessment for video-assisted thoracoscopic surgery (VATS) pulmonary resection: a narrative review. Video-assist Thorac Surg, 2025, 10: 9. |
| 50. | Beitler JR, Malhotra A, Thompson BT. Ventilator-induced lung injury. Clin Chest Med, 2016, 37(4): 633-646. |
| 51. | Penev Y, Ruppert MM, Bilgili A, et al. Intraoperative hypotension and postoperative acute kidney injury: a systematic review. Am J Surg, 2024, 232: 45-53. |
| 52. | Saugel B, Sander M, Katzer C, et al. Association of intraoperative hypotension and cumulative norepinephrine dose with postoperative acute kidney injury in patients having noncardiac surgery: a retrospective cohort analysis. Br J Anaesth, 2025, 134(1): 54-62. |
| 53. | Punzo G, Beccia G, Cambise C, et al. Goal-directed fluid therapy using pulse pressure variation in thoracic surgery requiring one-lung ventilation: a randomized controlled trial. J Clin Med, 2024, 13(18): 5589. |
| 54. | Makkad B, Kachulis B. Challenges in acute postoperative pain management in thoracic surgery. Best Pract Res Clin Anaesthesiol, 2024, 38(1): 64-73. |
| 55. | Sato T, Teramukai S, Kondo H, et al. Impact and predictors of acute exacerbation of interstitial lung diseases after pulmonary resection for lung cancer. J Thorac Cardiovasc Surg, 2014, 147(5): 1604-1611. e3. |
| 56. | Andersson C, Wissenberg M, J?rgensen ME, et al. Age-specific performance of the revised cardiac risk index for predicting cardiovascular risk in elective noncardiac surgery. Circ Cardiovasc Qual Outcomes, 2015, 8(1): 103-108. |
| 57. | D’Ambrosio PD, Terra RM, Brunelli A, et al. External validation of the parsimonious EuroLung risk models: analysis of the Brazilian Lung Cancer Registry. J Bras Pneumol, 2024, 50(4): e20240226. |
| 58. | Li P, Gao S, Wang Y, et al. Utilising intraoperative respiratory dynamic features for developing and validating an explainable machine learning model for postoperative pulmonary complications. Br J Anaesth, 2024, 132(6): 1315-1326. |
| 59. | Collins GS, Moons KGM, Dhiman P, et al. TRIPOD+AI statement: updated guidance for reporting clinical prediction models that use regression or machine learning methods. BMJ, 2024, 385: e078378. |
| 60. | Riley RD, Archer L, Snell KIE, et al. Evaluation of clinical prediction models (part 2): how to undertake an external validation study. BMJ, 2024, 384: e074820. |
| 61. | Sterne JA, White IR, Carlin JB, et al. Multiple imputation for missing data in epidemiological and clinical research: potential and pitfalls. BMJ, 2009, 338: b2393. |
| 62. | Moons KGM, Wolff RF, Riley RD, et al. PROBAST: a tool to assess risk of bias and applicability of prediction model studies: explanation and elaboration. Ann Intern Med, 2019, 170(1): W1-W33. |
| 63. | Fabris S, Gasparini A, Iorio K, et al. Regularization approaches in clinical biostatistics: a review of methods and their applications. Stat Methods Med Res, 2023, 32(2): 434-451. |
| 64. | Van Calster B, McLernon DJ, van Smeden M, et al. Calibration: the Achilles heel of predictive analytics. BMC Med, 2019, 17: 230. |
| 65. | Collins GS, de Groot JA, Dutton S, et al. External validation of multivariable prediction models: a systematic review of methodological conduct and reporting. BMC Med Res Methodol, 2014, 14: 40. |
| 66. | Christodoulou E, Ma J, Collins GS, et al. A systematic review shows no performance benefit of machine learning over logistic regression for clinical prediction models. J Clin Epidemiol, 2019, 110: 12-22. |
| 67. | Schober P, Vetter TR. Survival analysis and interpretation of time-to-event data: the tortoise and the hare. Anesth Analg, 2018, 127(3): 792-798. |
| 68. | Steyerberg EW, Vickers AJ, Cook NR, et al. Assessing the performance of prediction models: a framework for traditional and novel measures. Epidemiology, 2010, 21(1): 128-138. |
| 69. | Vickers AJ, Elkin EB. Decision curve analysis: a novel method for evaluating prediction models. Med Decis Making, 2006, 26(6): 565-574. |
| 70. | Steyerberg EW, Bleeker SE, Moll HA, et al. Internal and external validation of predictive models: a simulation study of bias and precision in small samples. J Clin Epidemiol, 2003, 56(5): 441-447. |
| 71. | Moons KGM, Damen JAA, Kaul T, et al. PROBAST+AI: an updated quality, risk of bias, and applicability assessment tool for prediction models using regression or artificial intelligence methods. BMJ, 2025, 388: e082505. |
| 72. | Zhao JY, Presley C, Madariaga ML, et al. Prehabilitation for older adults undergoing lung cancer surgery: a literature review and needs assessment. Clin Lung Cancer, 2024, 25(7): 595-600. |
| 73. | Ferrando C, Carrami?ana A, Pi?eiro P, et al. Individualised, perioperative open-lung ventilation strategy during one-lung ventilation (iPROVE-OLV): a multicentre, randomised, controlled clinical trial. Lancet Respir Med, 2024, 12(3): 195-206. |
| 74. | Tan JWY, Izaham A, Abd Rahman R, et al. High-flow nasal oxygen therapy in preventing post-extubation hypoxaemia and postoperative pulmonary complications: a systematic review and meta-analysis. Diagnostics (Basel), 2025, 15(19): 2449. |
| 75. | Brat K, Sova M, Homolka P, et al. Multimodal prehabilitation before lung resection surgery: a multicentre randomised controlled trial. Br J Anaesth, 2025, 135(1): 188-196. |
| 76. | Allgaier J, Mulansky L, Draelos RL, et al. How does the model make predictions? A systematic literature review on the explainability power of machine learning in healthcare. Artif Intell Med, 2023, 143: 102616. |
| 77. | Sahiner B, Chen W, Samala RK, et al. Data drift in medical machine learning: implications and potential remedies. Br J Radiol, 2023, 96(1150): 20220878. |
| 78. | Subasri V, Krishnan A, Kore A, et al. Detecting and remediating harmful data shifts for the responsible deployment of clinical AI models. JAMA Netw Open, 2025, 8(6): e2513685. |
| 79. | Wong A, Sussman JB. Understanding model drift and its impact on health care policy. JAMA Health Forum, 2025, 6(8): e252724. |
| 80. | Vasey B, Nagendran M, Campbell B, et al. Reporting guideline for the early stage clinical evaluation of decision support systems driven by artificial intelligence: DECIDE-AI. BMJ, 2022, 377: e070904. |
| 81. | Yin X, Zhang C, Ding K, et al. Accelerated biological aging and postoperative acute kidney injury in surgical patients: a retrospective multicentre cohort analysis of 94, 006 cases. Int J Surg, 2025. |
| 82. | Pawel S, Consonni G, Held L. Bayesian approaches to designing replication studies. Psychol Methods, 2026, 31(1): 22-39. |
| 83. | Dao VH, Gunawan D, Kohn R, et al. Bayesian inference for evidence accumulation models with regressors. Psychol Methods, 2025. |
| 84. | Qi B, Jiang Z, Shen H, et al. Interpretable multimodal radiopathomics model predicting pathological complete response to neoadjuvant chemoimmunotherapy in esophageal squamous cell carcinoma. J Immunother Cancer, 2025, 13(12): e013840. |
| 85. | Sepúlveda M, Arauna D, García F, et al. Frailty in aging and the search for the optimal biomarker: a review. Biomedicines, 2022, 10(6): 1426. |
| 86. | Shotwell MS, Hennessy C, Martin BJ, et al. Risk prediction model for postoperative acute kidney injury in a broad surgical population. J Am Coll Surg, 2026. |
| 87. | Du W, Zhan F, Chen W, et al. Multicenter machine learning prediction of postoperative heart failure in elderly patients highlighting inflammatory markers, metabolic comorbidities, and perioperative tachycardia. Front Med (Lausanne), 2026, 13: 1833776. |
| 88. | Rosen AW, Ose I, G?genur M, et al. Clinical implementation of an AI-based prediction model for decision support for patients undergoing colorectal cancer surgery. Nat Med, 2025, 31(11): 3737-3748. |
| 89. | Machado P, Pimenta S, Garcia AL, et al. Effect of preoperative home-based exercise training on quality of life after lung cancer surgery: a multicenter randomized controlled trial. Ann Surg Oncol, 2024, 31(2): 847-859. |
| 90. | Hashimoto Y, Inoue N, Tani T, et al. Machine learning for predicting postoperative functional disability and mortality among older patients with cancer: retrospective cohort study. JMIR Aging, 2025, 8: e65898. |
| 91. | Opel DJ, Gerstein MT, Carle AC, et al. Saving shared decision-making. J Gen Intern Med, 2025, 40(8): 1844-1847. |
| 92. | Lamar MM. Markov decision process measurement model. Psychometrika, 2018, 83(1): 67-88. |
| 93. | Clavien PA, Barkun J, de Oliveira ML, et al. The Clavien-Dindo classification of surgical complications: five-year experience. Ann Surg, 2009, 250(2): 187-196. |
| 94. | Riley RD, Snell KI, Ensor J, et al. Minimum sample size for developing a multivariable prediction model: PARTⅡ- binary and time-to-event outcomes. Stat Med, 2019, 38(7): 1276-1296. |
| 95. | Steyerberg EW, Harrell FE, Borsboom GJ, et al. Internal validation of predictive models: efficiency of some procedures for logistic regression analysis. J Clin Epidemiol, 2001, 54(8): 774-781. |
| 96. | Allotey PA, Harel O. Multiple imputation for incomplete data in environmental epidemiology research. Curr Environ Health Rep, 2019, 6(2): 62-71. |
| 97. | Chakradeo K, Huynh I, Balaganeshan SB, et al. Navigating fairness aspects of clinical prediction models. BMC Med, 2025, 23(1): 567. |
| 98. | Gómez de Antonio D, Crowley Carrasco S, Romero Román A, et al. External validation of the European Society of Thoracic Surgeons morbidity and mortality risk models. Eur J Cardiothorac Surg, 2022, 62(3): ezac170. |
| 99. | Sung TY, Oh CS. Frailty assessment in perioperative geriatric patients: a narrative review. Anesth Pain Med (Seoul), 2026, 21(1): 51-66. |
| 100. | McIsaac DI, Kidd G, Gillis C, et al. Relative efficacy of prehabilitation interventions and their components: systematic review with network and component network meta-analyses of randomised controlled trials. BMJ, 2025, 388: e081164. |
- 1. National Lung Screening Trial Research Team, Aberle DR, Adams AM, et al. Reduced lung-cancer mortality with low-dose computed tomographic screening. N Engl J Med, 2011, 365(5): 395-409.
- 2. de Koning HJ, van der Aalst CM, de Jong PA, et al. Reduced lung-cancer mortality with volume CT screening in a randomized trial. N Engl J Med, 2020, 382(6): 503-513.
- 3. Fernandez-Bustamante A, Parker RA, Frendl G, et al. Perioperative lung expansion and pulmonary outcomes after open abdominal surgery versus usual care in the USA (PRIME-AIR): a multicentre, randomised, controlled, phase 3 trial. Lancet Respir Med, 2025, 13(5): 447-459.
- 4. Volkert D, Delzenne N, Demirkan K, et al. Nutrition for the older adult-current concepts. Report from an ESPEN symposium. Clin Nutr, 2024, 43(8): 1815-1824.
- 5. Engel JS, Tran J, Khalil N, et al. A systematic review of perioperative clinical practice guidelines for care of older adults living with frailty. Br J Anaesth, 2023, 130(3): 262-271.
- 6. Tong BC, Bonnell LN, Habib RH, et al. The Society of Thoracic Surgeons 2024 risk models for lung cancer resection: continued refinement and improved outcomes. Ann Thorac Surg, 2025, 119(4): 777-785.
- 7. Brunelli A, Salati M, Rocco G, et al. European risk models for morbidity (EuroLung1) and mortality (EuroLung2) to predict outcome following anatomic lung resections: an analysis from the European Society of Thoracic Surgeons database. Eur J Cardiothorac Surg, 2017, 51(3): 490-497.
- 8. Garabinovic Z, Savic M, Colic N, et al. Artificial intelligence as a diagnostic tool in preoperative surgical planning for early non-small cell lung cancer: a single-center experience. J Clin Med, 2025, 14(21): 7609.
- 9. Chen Y, Chen D, Liu X, et al. Deep learning-driven multimodal integration of miRNA and radiomic for lung cancer diagnosis. Biosensors, 2025, 15(9): 610.
- 10. Kuang Q, Feng B, Xu K, et al. Multimodal deep learning radiomics model for predicting postoperative progression in solid stageⅠnon-small cell lung cancer. Cancer Imaging, 2024, 24(1): 140.
- 11. Dindo D, Demartines N, Clavien PA. Classification of surgical complications: a new proposal with evaluation in a cohort of 6336 patients and results of a survey. Ann Surg, 2004, 240(2): 205-213.
- 12. Trotti A, Colevas AD, Setser A, et al. CTCAE v3. 0: development of a comprehensive grading system for the adverse effects of cancer treatment. Semin Radiat Oncol, 2003, 13(3): 176-181.
- 13. Sato Y, Mizusawa J, Katayama H, et al. Validation of the Japan Clinical Oncology Group postoperative complications criteria against CTCAE for evaluation of postoperative complications (JCOG1903A). Eur J Surg Oncol, 2025, 51(6): 109669.
- 14. Katayama H, Kurokawa Y, Nakamura K, et al. Extended Clavien-Dindo classification of surgical complications: Japan Clinical Oncology Group postoperative complications criteria. Surg Today, 2016, 46(6): 668-685.
- 15. Liu Z, Kuo PL, Horvath S, et al. A new aging measure captures morbidity and mortality risk across diverse subpopulations from NHANES Ⅳ: a cohort study. PLoS Med, 2018, 15(12): e1002718.
- 16. Jiang J, Yin X, Kong S, et al. Associations of accelerated biological aging with intraoperative hypotension in major surgery: a multicenter cohort study of 116, 996 patients. Ann Med, 2025, 57(1): 2603045.
- 17. Soysal P, Stubbs B, Lucato P, et al. Inflammation and frailty in the elderly: a systematic review and meta-analysis. Ageing Res Rev, 2016, 31: 1-8.
- 18. Pan Y, Ma L. Inflammatory markers and physical frailty: towards clinical application. Immun Ageing, 2024, 21(1): 4.
- 19. Church S, Rogers E, Rockwood K, et al. A scoping review of the Clinical Frailty Scale. BMC Geriatr, 2020, 20(1): 393.
- 20. Rockwood K, Song X, MacKnight C, et al. A global clinical measure of fitness and frailty in elderly people. CMAJ, 2005, 173(5): 489-495.
- 21. McIsaac DI, Lee S, Fergusson D, et al. Home-based prehabilitation for older surgical patients with frailty: a randomized clinical trial. JAMA Surg, 2026, 161(2): 113-123.
- 22. Cruz-Jentoft AJ, Bahat G, Bauer J, et al. Sarcopenia: revised European consensus on definition and diagnosis. Age Ageing, 2019, 48(4): 601.
- 23. Han DJ, Na KJ, Yun T, et al. Effects of respiratory sarcopenia on the postoperative course in elderly lung cancer patient: a retrospective study. J Cardiothorac Surg, 2025, 20(1): 71.
- 24. Brunelli A, Charloux A, Bolliger CT, et al. ERS/ESTS clinical guidelines on fitness for radical therapy in lung cancer patients (surgery and chemo-radiotherapy). Eur Respir J, 2009, 34(1): 17-41.
- 25. Clark JM, Marrufo AS, Kozower BD, et al. Cardiopulmonary testing prior to lung resection: what are thoracic surgeons doing? Ann Thorac Surg, 2019, 108(4): 1006-1012.
- 26. Lee AH, Seyednejad N, Yang Y, et al. Analysis of pulmonary complications and predicted postoperative pulmonary function in oncologic lung resections. J Thorac Dis, 2024, 16(11): 7574-7581.
- 27. Axtell AL, David EA, Block MI, et al. Association between interstitial lung disease and outcomes after lung cancer resection. Ann Thorac Surg, 2023, 116(3): 533-541.
- 28. Writing Committee Members, Thompson A, Fleischmann KE, et al. 2024 AHA/ACC/ACS/ASNC/HRS/SCA/SCCT/SCMR/SVM guideline for perioperative cardiovascular management for noncardiac surgery: a report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. J Am Coll Cardiol, 2024, 84(19): 1869-1969.
- 29. Brunelli A, Kim AW, Berger KI, et al. Physiologic evaluation of the patient with lung cancer being considered for resectional surgery: diagnosis and management of lung cancer, 3rd ed: American College of Chest Physicians evidence-based clinical practice guidelines. Chest, 2013, 143(5 Suppl): e166S-e190S.
- 30. Chaudhry RA, Zarmer L, West K, et al. Obstructive sleep apnea and risk of postoperative complications after non-cardiac surgery. J Clin Med, 2024, 13(9): 2538.
- 31. Zhang X, Li X, Li Y, et al. Comparison of high-flow nasal cannula with conventional oxygen therapy for preventing postoperative hypoxemia in patients with lung resection surgery: a systematic review and meta-analysis. J Thorac Dis, 2024, 16(5): 2906-2917.
- 32. Yu Y, Xu S, Yan B, et al. Incidence and associations of acute kidney injury after general thoracic surgery: a system review and meta-analysis. J Clin Med, 2022, 12(1): 37.
- 33. O’Dell Duplechin M, Folds GT, Duplechin DP, et al. Prevention and management of perioperative acute kidney injury: a narrative review. Diseases, 2025, 13(9): 295.
- 34. Parikh S, Bentz T, Crowley S, et al. Perioperative blood management. J Clin Med, 2025, 14(11): 3847.
- 35. Casselman FPA, Lance MD, Ahmed A, et al. 2024 EACTS/EACTAIC guidelines on patient blood management in adult cardiac surgery in collaboration with EBCP. Eur J Cardiothorac Surg, 2024, 67(5): ezae352.
- 36. Lan H, Zhou L, Chi D, et al. Preoperative platelet to lymphocyte and neutrophil to lymphocyte ratios are independent prognostic factors for patients undergoing lung cancer radical surgery: a single institutional cohort study. Oncotarget, 2016, 8(21): 35301-35310.
- 37. Lopez-Pastorini A, Riedel R, Koryllos A, et al. The impact of preoperative elevated serum C-reactive protein on postoperative morbidity and mortality after anatomic resection for lung cancer. Lung Cancer, 2017, 109: 68-73.
- 38. Zhang H, Mao X, Xu J, et al. Risk factors for postoperative pulmonary complications in non-adenocarcinoma non-small cell lung cancer patients undergoing surgery after neoadjuvant therapy. Transl Lung Cancer Res, 2025, 14(2): 385-398.
- 39. Batchelor TJP, Rasburn NJ, Abdelnour-Berchtold E, et al. Guidelines for enhanced recovery after lung surgery: recommendations of the Enhanced Recovery After Surgery (ERAS?) Society and the European Society of Thoracic Surgeons (ESTS). Eur J Cardiothorac Surg, 2019, 55(1): 91-115.
- 40. Miskovic A, Lumb AB. Postoperative pulmonary complications. Br J Anaesth, 2017, 118(3): 317-334.
- 41. Lee HJ, Lee HW. Comprehensive strategies for preoperative pulmonary risk evaluation and management. Tuberc Respir Dis (Seoul), 2024, 88(1): 90-108.
- 42. Ke L, Cui S, Chen S, et al. Dynamics of D-dimer in non-small cell lung cancer patients receiving radical surgery and its association with postoperative venous thromboembolism. Thorac Cancer, 2020, 11(9): 2483-2492.
- 43. Dai W, Yang XJ, Zhuang X, et al. Reoperation for hemostasis within 24 hours can get a better short-term outcome when indicated after lung cancer surgery. J Thorac Dis, 2017, 9(10): 3677-3683.
- 44. Axtell AL, Gaissert HA, Bao X, et al. Predictors of venous thromboembolism after lung cancer resection. Ann Thorac Surg, 2024, 117(5): 998-1005.
- 45. Shargall Y, Wiercioch W, Brunelli A, et al. Joint 2022 European Society of Thoracic Surgeons and The American Association for Thoracic Surgery guidelines for the prevention of cancer-associated venous thromboembolism in thoracic surgery. Eur J Cardiothorac Surg, 2022, 63(1): ezac488.
- 46. Hachey KJ, Hewes PD, Porter LP, et al. Caprini venous thromboembolism risk assessment permits selection for postdischarge prophylactic anticoagulation in patients with resectable lung cancer. J Thorac Cardiovasc Surg, 2016, 151(1): 37-44. e1.
- 47. Cui S, Chen S, Li H, et al. Risk factors for venous thromboembolism and evaluation of the modified Caprini score in patients undergoing lung resection. J Thorac Dis, 2020, 12(9): 4805-4816.
- 48. Sterbling HM, Rosen AK, Hachey KJ, et al. Caprini risk model decreases venous thromboembolism rates in thoracic surgery cancer patients. Ann Thorac Surg, 2018, 105(3): 879-885.
- 49. Young RWC, Kucera J, Antevil JL, et al. Preoperative cardiopulmonary assessment for video-assisted thoracoscopic surgery (VATS) pulmonary resection: a narrative review. Video-assist Thorac Surg, 2025, 10: 9.
- 50. Beitler JR, Malhotra A, Thompson BT. Ventilator-induced lung injury. Clin Chest Med, 2016, 37(4): 633-646.
- 51. Penev Y, Ruppert MM, Bilgili A, et al. Intraoperative hypotension and postoperative acute kidney injury: a systematic review. Am J Surg, 2024, 232: 45-53.
- 52. Saugel B, Sander M, Katzer C, et al. Association of intraoperative hypotension and cumulative norepinephrine dose with postoperative acute kidney injury in patients having noncardiac surgery: a retrospective cohort analysis. Br J Anaesth, 2025, 134(1): 54-62.
- 53. Punzo G, Beccia G, Cambise C, et al. Goal-directed fluid therapy using pulse pressure variation in thoracic surgery requiring one-lung ventilation: a randomized controlled trial. J Clin Med, 2024, 13(18): 5589.
- 54. Makkad B, Kachulis B. Challenges in acute postoperative pain management in thoracic surgery. Best Pract Res Clin Anaesthesiol, 2024, 38(1): 64-73.
- 55. Sato T, Teramukai S, Kondo H, et al. Impact and predictors of acute exacerbation of interstitial lung diseases after pulmonary resection for lung cancer. J Thorac Cardiovasc Surg, 2014, 147(5): 1604-1611. e3.
- 56. Andersson C, Wissenberg M, J?rgensen ME, et al. Age-specific performance of the revised cardiac risk index for predicting cardiovascular risk in elective noncardiac surgery. Circ Cardiovasc Qual Outcomes, 2015, 8(1): 103-108.
- 57. D’Ambrosio PD, Terra RM, Brunelli A, et al. External validation of the parsimonious EuroLung risk models: analysis of the Brazilian Lung Cancer Registry. J Bras Pneumol, 2024, 50(4): e20240226.
- 58. Li P, Gao S, Wang Y, et al. Utilising intraoperative respiratory dynamic features for developing and validating an explainable machine learning model for postoperative pulmonary complications. Br J Anaesth, 2024, 132(6): 1315-1326.
- 59. Collins GS, Moons KGM, Dhiman P, et al. TRIPOD+AI statement: updated guidance for reporting clinical prediction models that use regression or machine learning methods. BMJ, 2024, 385: e078378.
- 60. Riley RD, Archer L, Snell KIE, et al. Evaluation of clinical prediction models (part 2): how to undertake an external validation study. BMJ, 2024, 384: e074820.
- 61. Sterne JA, White IR, Carlin JB, et al. Multiple imputation for missing data in epidemiological and clinical research: potential and pitfalls. BMJ, 2009, 338: b2393.
- 62. Moons KGM, Wolff RF, Riley RD, et al. PROBAST: a tool to assess risk of bias and applicability of prediction model studies: explanation and elaboration. Ann Intern Med, 2019, 170(1): W1-W33.
- 63. Fabris S, Gasparini A, Iorio K, et al. Regularization approaches in clinical biostatistics: a review of methods and their applications. Stat Methods Med Res, 2023, 32(2): 434-451.
- 64. Van Calster B, McLernon DJ, van Smeden M, et al. Calibration: the Achilles heel of predictive analytics. BMC Med, 2019, 17: 230.
- 65. Collins GS, de Groot JA, Dutton S, et al. External validation of multivariable prediction models: a systematic review of methodological conduct and reporting. BMC Med Res Methodol, 2014, 14: 40.
- 66. Christodoulou E, Ma J, Collins GS, et al. A systematic review shows no performance benefit of machine learning over logistic regression for clinical prediction models. J Clin Epidemiol, 2019, 110: 12-22.
- 67. Schober P, Vetter TR. Survival analysis and interpretation of time-to-event data: the tortoise and the hare. Anesth Analg, 2018, 127(3): 792-798.
- 68. Steyerberg EW, Vickers AJ, Cook NR, et al. Assessing the performance of prediction models: a framework for traditional and novel measures. Epidemiology, 2010, 21(1): 128-138.
- 69. Vickers AJ, Elkin EB. Decision curve analysis: a novel method for evaluating prediction models. Med Decis Making, 2006, 26(6): 565-574.
- 70. Steyerberg EW, Bleeker SE, Moll HA, et al. Internal and external validation of predictive models: a simulation study of bias and precision in small samples. J Clin Epidemiol, 2003, 56(5): 441-447.
- 71. Moons KGM, Damen JAA, Kaul T, et al. PROBAST+AI: an updated quality, risk of bias, and applicability assessment tool for prediction models using regression or artificial intelligence methods. BMJ, 2025, 388: e082505.
- 72. Zhao JY, Presley C, Madariaga ML, et al. Prehabilitation for older adults undergoing lung cancer surgery: a literature review and needs assessment. Clin Lung Cancer, 2024, 25(7): 595-600.
- 73. Ferrando C, Carrami?ana A, Pi?eiro P, et al. Individualised, perioperative open-lung ventilation strategy during one-lung ventilation (iPROVE-OLV): a multicentre, randomised, controlled clinical trial. Lancet Respir Med, 2024, 12(3): 195-206.
- 74. Tan JWY, Izaham A, Abd Rahman R, et al. High-flow nasal oxygen therapy in preventing post-extubation hypoxaemia and postoperative pulmonary complications: a systematic review and meta-analysis. Diagnostics (Basel), 2025, 15(19): 2449.
- 75. Brat K, Sova M, Homolka P, et al. Multimodal prehabilitation before lung resection surgery: a multicentre randomised controlled trial. Br J Anaesth, 2025, 135(1): 188-196.
- 76. Allgaier J, Mulansky L, Draelos RL, et al. How does the model make predictions? A systematic literature review on the explainability power of machine learning in healthcare. Artif Intell Med, 2023, 143: 102616.
- 77. Sahiner B, Chen W, Samala RK, et al. Data drift in medical machine learning: implications and potential remedies. Br J Radiol, 2023, 96(1150): 20220878.
- 78. Subasri V, Krishnan A, Kore A, et al. Detecting and remediating harmful data shifts for the responsible deployment of clinical AI models. JAMA Netw Open, 2025, 8(6): e2513685.
- 79. Wong A, Sussman JB. Understanding model drift and its impact on health care policy. JAMA Health Forum, 2025, 6(8): e252724.
- 80. Vasey B, Nagendran M, Campbell B, et al. Reporting guideline for the early stage clinical evaluation of decision support systems driven by artificial intelligence: DECIDE-AI. BMJ, 2022, 377: e070904.
- 81. Yin X, Zhang C, Ding K, et al. Accelerated biological aging and postoperative acute kidney injury in surgical patients: a retrospective multicentre cohort analysis of 94, 006 cases. Int J Surg, 2025.
- 82. Pawel S, Consonni G, Held L. Bayesian approaches to designing replication studies. Psychol Methods, 2026, 31(1): 22-39.
- 83. Dao VH, Gunawan D, Kohn R, et al. Bayesian inference for evidence accumulation models with regressors. Psychol Methods, 2025.
- 84. Qi B, Jiang Z, Shen H, et al. Interpretable multimodal radiopathomics model predicting pathological complete response to neoadjuvant chemoimmunotherapy in esophageal squamous cell carcinoma. J Immunother Cancer, 2025, 13(12): e013840.
- 85. Sepúlveda M, Arauna D, García F, et al. Frailty in aging and the search for the optimal biomarker: a review. Biomedicines, 2022, 10(6): 1426.
- 86. Shotwell MS, Hennessy C, Martin BJ, et al. Risk prediction model for postoperative acute kidney injury in a broad surgical population. J Am Coll Surg, 2026.
- 87. Du W, Zhan F, Chen W, et al. Multicenter machine learning prediction of postoperative heart failure in elderly patients highlighting inflammatory markers, metabolic comorbidities, and perioperative tachycardia. Front Med (Lausanne), 2026, 13: 1833776.
- 88. Rosen AW, Ose I, G?genur M, et al. Clinical implementation of an AI-based prediction model for decision support for patients undergoing colorectal cancer surgery. Nat Med, 2025, 31(11): 3737-3748.
- 89. Machado P, Pimenta S, Garcia AL, et al. Effect of preoperative home-based exercise training on quality of life after lung cancer surgery: a multicenter randomized controlled trial. Ann Surg Oncol, 2024, 31(2): 847-859.
- 90. Hashimoto Y, Inoue N, Tani T, et al. Machine learning for predicting postoperative functional disability and mortality among older patients with cancer: retrospective cohort study. JMIR Aging, 2025, 8: e65898.
- 91. Opel DJ, Gerstein MT, Carle AC, et al. Saving shared decision-making. J Gen Intern Med, 2025, 40(8): 1844-1847.
- 92. Lamar MM. Markov decision process measurement model. Psychometrika, 2018, 83(1): 67-88.
- 93. Clavien PA, Barkun J, de Oliveira ML, et al. The Clavien-Dindo classification of surgical complications: five-year experience. Ann Surg, 2009, 250(2): 187-196.
- 94. Riley RD, Snell KI, Ensor J, et al. Minimum sample size for developing a multivariable prediction model: PARTⅡ- binary and time-to-event outcomes. Stat Med, 2019, 38(7): 1276-1296.
- 95. Steyerberg EW, Harrell FE, Borsboom GJ, et al. Internal validation of predictive models: efficiency of some procedures for logistic regression analysis. J Clin Epidemiol, 2001, 54(8): 774-781.
- 96. Allotey PA, Harel O. Multiple imputation for incomplete data in environmental epidemiology research. Curr Environ Health Rep, 2019, 6(2): 62-71.
- 97. Chakradeo K, Huynh I, Balaganeshan SB, et al. Navigating fairness aspects of clinical prediction models. BMC Med, 2025, 23(1): 567.
- 98. Gómez de Antonio D, Crowley Carrasco S, Romero Román A, et al. External validation of the European Society of Thoracic Surgeons morbidity and mortality risk models. Eur J Cardiothorac Surg, 2022, 62(3): ezac170.
- 99. Sung TY, Oh CS. Frailty assessment in perioperative geriatric patients: a narrative review. Anesth Pain Med (Seoul), 2026, 21(1): 51-66.
- 100. McIsaac DI, Kidd G, Gillis C, et al. Relative efficacy of prehabilitation interventions and their components: systematic review with network and component network meta-analyses of randomised controlled trials. BMJ, 2025, 388: e081164.

