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Comparative Prognostic Value of Baseline CRP, NLR, and MLR for 12-Month Outcomes After Ischaemic Stroke: A
Yu Zhao1,2, Yutong Wang3, Shengyuan Wang4
1Department of Neurology, Shenzhen Third People's Hospital, Shenzhen, People's Republic of China.
Background And Objective:
C-reactive protein (CRP), the neutrophil-to-lymphocyte ratio (NLR) and the monocyte-to-lymphocyte ratio (MLR) are routinely available inflammatory markers of uncertain relative prognostic value after stroke. This study aimed to investigate the associations of baseline CRP, NLR, and MLR with 12-month mortality and recurrence in patients with stroke.
Methods:
This single-center prospective cohort study enrolled hospitalized patients with stroke. Univariable analyses were performed to compare baseline characteristics according to 12-month mortality and recurrence status. Multivariable logistic regression models were constructed to evaluate the independent associations of CRP, NLR, and MLR with 12-month mortality and recurrence after adjustment for clinically relevant covariates.
Results:
A total of 2937 patients were included in the baseline analysis. Among them, 2166 were included in the 12-month mortality analysis, and 237 died during follow-up. In the multivariable logistic regression model, higher CRP was independently associated with an increased risk of 12-month mortality (OR = 1.01, 95% CI: 1.01-1.02, P < 0.001). NLR showed a borderline association with mortality (OR = 1.06, 95% CI: 1.00-1.13, P = 0.064), whereas MLR was not independently associated with mortality. A total of 2018 patients were included in the 12-month recurrence analysis, among whom 614 experienced recurrent events. In the multivariable model, higher CRP was independently associated with an increased risk of recurrence (OR = 1.01, 95% CI: 1.00-1.02, P = 0.025), whereas NLR and MLR was not independently associated with recurrence.
Conclusion:
Baseline CRP was independently associated with 12-month mortality and, more weakly, with recurrence. The mortality association was substantially stronger, and CRP should be regarded primarily as a marker of long-term mortality risk. NLR and MLR showed no independent association with either endpoint. CRP, combined with key clinical indicators, may assist long-term risk stratification after ischaemic stroke.