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  • Title: The neutrophil-to-lymphocyte ratio on admission is a good predictor for all-cause mortality in hypertensive patients over 80 years of age.
    Author: Sun X, Luo L, Zhao X, Ye P, Du R.
    Journal: BMC Cardiovasc Disord; 2017 Jun 24; 17(1):167. PubMed ID: 28646855.
    Abstract:
    BACKGROUND: Immuno-inflammation plays a major role in the process of hypertension. We aimed to evaluate the association between inflammatory markers, neutrophil-to-lymphocyte ratio (NLR), red cell distribution width (RDW) and all-cause mortality in elderly patients with hypertension. METHODS: A total of 341 hypertensive patients over 80 years of age were included to this study. The NLR and RDW were measured on admission and all the selected patients were followed up for up to 90 days. Kaplan-Meier curves were plotted to evaluate the association between the NLR and the all-cause mortality at follow-up. Using Cox regression models, we investigated the prognostic value of NLR and RDW for all-cause mortality. RESULTS: Patients with higher quartile of NLR linked to high mortality in hypertensive patients at 90 day after admission (16.47%,13.25%,1.14%,1.17% respectively; χ2 = 20.581,P = 0.000). Surviving patients had lower RDW (13.61 ± 1.37 VS 14.18 ± 1.38, p = 0.041) and NLR (4.97 ± 5.72 VS 7.95 ± 6.88,p = 0.011). The receiver operating curve (ROC) of the NLR for all-cause mortality had an area under the curve (AUC) =0.714 (95%CI: 0.629-0.798, P = 0.000), with acritical value of 2.97, with sensitivity of 92.6%, and a specificity of 52.5%. The ROC of the RDW to predict all-cause mortality, had an AUC =0.654 (95%CI:0.548-0.761, P = 0.008), with acritical value of 13.2%.The Kaplan-Meier curve showed a significant difference between different NLR levels (p = 0.002). Multivariate Cox proportional hazard analysis shown 3rd quartile of NLR(RR = 9.646, 95% CI 1.302-34.457, P = 0.041) and 4th quartiles(RR = 16.451, 95% CI 2.137-66.643, P = 0.007) were found to independently predict all-cause death in hypertensive patients over 80 years of age. Higher rank of NLR was link to higher incidence of all-cause death for such patients. CONCLUSION: The findings of the present study demonstrate the potential utility of NLR in risk stratification of elderly patients with hypertension to provide information for clinical treatment strategies.
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