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已发表论文
嗜麦芽窄食单胞菌血流感染死亡率预测诺模图
Authors Yi S , Ye M, Liu P, Chen K, Yuan Y, Li L
Received 7 May 2025
Accepted for publication 19 September 2025
Published 26 September 2025 Volume 2025:18 Pages 5129—5137
DOI https://doi.org/10.2147/IDR.S536417
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 3
Editor who approved publication: Dr Hemant Joshi
Siting Yi,1,* Mengmin Ye,1,* Pingjuan Liu,1,* Kainan Chen,2 Ying Yuan,3 Liubing Li1
1Department of Laboratory Medicine, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, People’s Republic of China; 2College of Medical Technology, Guangdong Medical University, Dongguang, Guangdong, 523822, People’s Republic of China; 3Department of Geriatrics, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, People’s Republic of China
*These authors contributed equally to this work
Correspondence: Liubing Li, Department of Laboratory Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People’s Republic of China, Email lilb8@mail.sysu.edu.cn Ying Yuan, Department of Geriatrics, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, 510080, People’s Republic of China, Email yuany267@mail.sysu.edu.cn
Background: The World Health Organization classifies Stenotrophomonas maltophilia (S. maltophilia) as one of the most overlooked and difficult-to-treat multidrug-resistant pathogens. It mainly causes pneumonia and bloodstream infections (BSIs). Therefore, the aim of this study was to investigate the risk factors for mortality in patients with S. maltophilia BSIs and to construct a predictive nomogram model.
Methods: Clinical data were collected from patients with S. maltophilia BSIs who were admitted to the First Affiliated Hospital of Sun Yat-sen University from January 2013 to December 2023. Prognostic risk factors were identified using Cox regression and LASSO analysis. A nomogram was developed based on a multivariate analysis and validated using bootstrap resampling, receiver operating characteristic curve analysis, and calibration plots.
Results: The mortality rate was 20.0% among 85 patients with S. maltophilia BSIs. Multivariable analysis identified septic shock (hazard ratio [HR] = 7.859, 95% confidence interval (CI): 1.569– 79.607; P = 0.009) and respiratory diseases (HR = 7.602, 95% CI: 2.269– 39.202; P < 0.001) as independent risk factors for mortality. A predictive nomogram model incorporating these factors demonstrated excellent discrimination, with a C-index of 0.872 and high area under the curve values for 14-day (0.922) and 28-day (0.882) mortality. Calibration analysis showed precise agreement between predicted and observed outcomes.
Conclusion: Septic shock and respiratory diseases were independent risk factors for mortality in patients with S. maltophilia BSIs. The nomogram model developed in this study showed good predictive value for the survival rates of patients with S. maltophilia BSIs, thus facilitating clinical prevention and treatment.
Keywords: Stenotrophomonas maltophilia, bloodstream infections, risk factors for mortality, nomogram
1Department of Laboratory Medicine, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, People’s Republic of China; 2College of Medical Technology, Guangdong Medical University, Dongguang, Guangdong, 523822, People’s Republic of China; 3Department of Geriatrics, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, People’s Republic of China
*These authors contributed equally to this work
Correspondence: Liubing Li, Department of Laboratory Medicine, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, People’s Republic of China, Email lilb8@mail.sysu.edu.cn Ying Yuan, Department of Geriatrics, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, 510080, People’s Republic of China, Email yuany267@mail.sysu.edu.cn
Background: The World Health Organization classifies Stenotrophomonas maltophilia (S. maltophilia) as one of the most overlooked and difficult-to-treat multidrug-resistant pathogens. It mainly causes pneumonia and bloodstream infections (BSIs). Therefore, the aim of this study was to investigate the risk factors for mortality in patients with S. maltophilia BSIs and to construct a predictive nomogram model.
Methods: Clinical data were collected from patients with S. maltophilia BSIs who were admitted to the First Affiliated Hospital of Sun Yat-sen University from January 2013 to December 2023. Prognostic risk factors were identified using Cox regression and LASSO analysis. A nomogram was developed based on a multivariate analysis and validated using bootstrap resampling, receiver operating characteristic curve analysis, and calibration plots.
Results: The mortality rate was 20.0% among 85 patients with S. maltophilia BSIs. Multivariable analysis identified septic shock (hazard ratio [HR] = 7.859, 95% confidence interval (CI): 1.569– 79.607; P = 0.009) and respiratory diseases (HR = 7.602, 95% CI: 2.269– 39.202; P < 0.001) as independent risk factors for mortality. A predictive nomogram model incorporating these factors demonstrated excellent discrimination, with a C-index of 0.872 and high area under the curve values for 14-day (0.922) and 28-day (0.882) mortality. Calibration analysis showed precise agreement between predicted and observed outcomes.
Conclusion: Septic shock and respiratory diseases were independent risk factors for mortality in patients with S. maltophilia BSIs. The nomogram model developed in this study showed good predictive value for the survival rates of patients with S. maltophilia BSIs, thus facilitating clinical prevention and treatment.
Keywords: Stenotrophomonas maltophilia, bloodstream infections, risk factors for mortality, nomogram