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Late Mortality Prediction of Neutrophil-to-Lymphocyte and Platelet Ratio in Patients With Trauma Who Underwent Emergency Surgery: A Retrospective Study

Chae, YJ  | Lee, J | Park, JH | Han, DG | Ha, E | Yi, IK
The Journal of surgical research, 267. : 755-761, 2021
Journal Title
The Journal of surgical research
Background: We aimed to evaluate the usefulness of neutrophil-to-lymphocyte (N/L) and neutrophil-to-lymphocyte platelet (N/LP) ratios in predicting late mortality of patients with trauma who underwent emergency surgery. Materials and methods: We retrospectively evaluated patients with trauma older than 19 y who underwent emergency surgery at our level I trauma center. Blood count–based ratios (N/L and N/LP at days 1, 3, and 7 of hospitalization) and trauma scores were analyzed. Statistical analysis was performed using univariable logistic regression and receiver operating curves. Results: A total of 209 patients were evaluated. N/LP at day 7, N/L at day 7, Trauma Injury Severity Score, Revised Trauma Score, and Injury Severity Score were significantly associated with late mortality. Area under the receiver operating characteristic curves for predicting mortality was highest for N/LP at day 7 (0.867 [95% confidence interval 0.798-0.936], P < 0.001). The group with N/LP greater than the cutoff value (9.3, sensitivity 77.3%, specificity 83.1%) at day 7 showed higher mortality than the group with N/LP less than the cutoff value (35.4% versus 3.2%, P < 0.001, respectively) at day 7. Conclusions: N/LP at day 7 may be a superior predictor of late mortality compared with preexisting trauma scores in patients with major trauma undergoing emergency surgery, by better reflecting the systemic inflammation status.


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Journal Papers > School of Medicine / Graduate School of Medicine > Anesthesiology & Pain Medicine
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