Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio
Objective Staphylococcus aureus causes infections ranging from mild skin conditions to life-threatening diseases such as endocarditis. The incidence of S. aureus infections is increasing due to the rise in invasive procedures and immunosuppression. Inflammatory markers such as C-reactive protein lev...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2025-08-01
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| Series: | Journal of International Medical Research |
| Online Access: | https://doi.org/10.1177/03000605251363105 |
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| author | Yeliz Özdemir Nurbay Fatih Kaya Alpay Arı Selma Tosun Şebnem Çalık Emine Deniz Bayram |
| author_facet | Yeliz Özdemir Nurbay Fatih Kaya Alpay Arı Selma Tosun Şebnem Çalık Emine Deniz Bayram |
| author_sort | Yeliz Özdemir |
| collection | DOAJ |
| description | Objective Staphylococcus aureus causes infections ranging from mild skin conditions to life-threatening diseases such as endocarditis. The incidence of S. aureus infections is increasing due to the rise in invasive procedures and immunosuppression. Inflammatory markers such as C-reactive protein level, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio are useful for monitoring disease severity. This study aimed to identify the clinical and laboratory predictors of mortality in patients with S. aureus infections. Methods This retrospective observational study included patients aged >18 years with S. aureus growth who were treated at a tertiary hospital between 1 November 2013 and 1 February 2022. Infections were classified as pneumonia or infections of the bloodstream, bone and joint, and skin and soft tissue. Results Univariate analysis revealed that age >73 years, emergency department admission, and methicillin resistance were significant mortality risk factors. Multivariate analysis showed that age >73 years, pneumonia, and C-reactive protein level >86 mg/L increased the mortality rate by 3.5-, 7.6-, and 4.4-fold, respectively. Conclusion C-reactive protein level, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio are accessible, cost-effective markers that aid in predicting mortality. Integrating these biomarkers with clinical parameters such as advanced age and pneumonia can improve early risk stratification in patients with S. aureus infections. |
| format | Article |
| id | doaj-art-6de7ea3fb6444e24b7eec03e6d04cf18 |
| institution | DOAJ |
| issn | 1473-2300 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of International Medical Research |
| spelling | doaj-art-6de7ea3fb6444e24b7eec03e6d04cf182025-08-20T02:58:03ZengSAGE PublishingJournal of International Medical Research1473-23002025-08-015310.1177/03000605251363105Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratioYeliz ÖzdemirNurbay Fatih KayaAlpay ArıSelma TosunŞebnem ÇalıkEmine Deniz BayramObjective Staphylococcus aureus causes infections ranging from mild skin conditions to life-threatening diseases such as endocarditis. The incidence of S. aureus infections is increasing due to the rise in invasive procedures and immunosuppression. Inflammatory markers such as C-reactive protein level, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio are useful for monitoring disease severity. This study aimed to identify the clinical and laboratory predictors of mortality in patients with S. aureus infections. Methods This retrospective observational study included patients aged >18 years with S. aureus growth who were treated at a tertiary hospital between 1 November 2013 and 1 February 2022. Infections were classified as pneumonia or infections of the bloodstream, bone and joint, and skin and soft tissue. Results Univariate analysis revealed that age >73 years, emergency department admission, and methicillin resistance were significant mortality risk factors. Multivariate analysis showed that age >73 years, pneumonia, and C-reactive protein level >86 mg/L increased the mortality rate by 3.5-, 7.6-, and 4.4-fold, respectively. Conclusion C-reactive protein level, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio are accessible, cost-effective markers that aid in predicting mortality. Integrating these biomarkers with clinical parameters such as advanced age and pneumonia can improve early risk stratification in patients with S. aureus infections.https://doi.org/10.1177/03000605251363105 |
| spellingShingle | Yeliz Özdemir Nurbay Fatih Kaya Alpay Arı Selma Tosun Şebnem Çalık Emine Deniz Bayram Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio Journal of International Medical Research |
| title | Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio |
| title_full | Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio |
| title_fullStr | Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio |
| title_full_unstemmed | Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio |
| title_short | Predictors of mortality in infections: The role of C-reactive protein, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio |
| title_sort | predictors of mortality in infections the role of c reactive protein neutrophil to lymphocyte ratio and platelet to lymphocyte ratio |
| url | https://doi.org/10.1177/03000605251363105 |
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