Prognostic Role of Dynamic Neutrophil-to-lymphocyte Ratio in Acute Ischemic Stroke After Reperfusion Therapy: A Meta-analysis
Overview
Authors
Affiliations
Background: The prognostic role of the neutrophil-to-lymphocyte ratio (NLR), an inflammatory marker, in acute ischemic stroke (AIS) after reperfusion therapy remains controversial. Therefore, this meta-analysis sought to assess the correlation between the dynamic NLR and the clinical outcomes of patients with AIS after reperfusion therapy.
Methods: PubMed, Web of Science, and Embase databases were searched to identify relevant literature from their inception to 27 October 2022. The clinical outcomes of interest included poor functional outcome (PFO) at 3 months, symptomatic intracerebral hemorrhage (sICH), and 3-month mortality. The NLR on admission (pre-treatment) and post-treatment was collected. The PFO was defined as a modified Rankin scale (mRS) of >2.
Results: A total of 17,232 patients in 52 studies were included in the meta-analysis. The admission NLR was higher in the 3-month PFO (standardized mean difference [SMD] = 0.46, 95% confidence interval [CI] = 0.35-0.57), sICH (SMD = 0.57, 95% CI = 0.30-0.85), and mortality at 3 months (SMD = 0.60, 95% CI = 0.34-0.87). An elevated admission NLR was associated with an increased risk of 3-month PFO (odds ratio [OR] = 1.13, 95% CI = 1.09-1.17), sICH (OR = 1.11, 95% CI = 1.06-1.16), and mortality at 3 months (OR = 1.13, 95% CI = 1.07-1.20). The post-treatment NLR was significantly higher in the 3-month PFO (SMD = 0.80, 95% CI = 0.62-0.99), sICH (SMD = 1.54, 95% CI = 0.97-2.10), and mortality at 3 months (SMD = 1.00, 95% CI = 0.31-1.69). An elevated post-treatment NLR was significantly associated with an increased risk of 3-month PFO (OR = 1.25, 95% CI = 1.16-1.35), sICH (OR = 1.14, 95% CI = 1.01-1.29), and mortality at 3 months (OR = 1.28, 95% CI = 1.09-1.50).
Conclusion: The admission and post-treatment NLR can be used as cost-effective and easily available biomarkers to predict the 3-month PFO, sICH, and mortality at 3 months in patients with AIS treated with reperfusion therapy. The post-treatment NLR provides better predictive power than the admission NLR.
Systematic Review Registration: https://www.crd.york.ac.uk/PROSPERO/, identifier: CRD42022366394.
Martinis L, Castiglia S, Vaghi G, Morotti A, Grillo V, Corrado M Sensors (Basel). 2024; 24(18).
PMID: 39338758 PMC: 11435490. DOI: 10.3390/s24186012.
Zheng S, Jiang X, Guo S, Shi Z Front Neurol. 2024; 15:1394550.
PMID: 38994493 PMC: 11236612. DOI: 10.3389/fneur.2024.1394550.
Cao W, Song Y, Bai X, Yang B, Li L, Wang X Heliyon. 2024; 10(10):e31122.
PMID: 38778990 PMC: 11109896. DOI: 10.1016/j.heliyon.2024.e31122.
Wei W, Liu C, Song G, Yang L, Li J, Wang B Ren Fail. 2024; 46(1):2343818.
PMID: 38637281 PMC: 11028010. DOI: 10.1080/0886022X.2024.2343818.
Vaghi G, Morotti A, Piella E, Avenali M, Martinelli D, Cristina S Sci Rep. 2024; 14(1):8320.
PMID: 38594322 PMC: 11003970. DOI: 10.1038/s41598-024-58562-1.