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. 2022 Mar 18:2022:1033332.
doi: 10.1155/2022/1033332. eCollection 2022.

Association of Platelet-to-Lymphocyte Ratio with Stroke-Associated Pneumonia in Acute Ischemic Stroke

Wei Li  1 , Cailian He  1
Affiliations

Association of Platelet-to-Lymphocyte Ratio with Stroke-Associated Pneumonia in Acute Ischemic Stroke

Wei Li et al. J Healthc Eng. .

Abstract

A common consequence of acute ischemic stroke (AIS), stroke-associated pneumonia (SAP), might result in a poor prognosis after stroke. Based on the critical position of inflammation in SAP, this study aimed to explore the correlation between platelet-to-lymphocyte ratio (PLR) and the occurrence of SAP. We included 295 patients with acute ischemic stroke, 40 with SAP, and 255 without SAP. The area under the receiver operating characteristic curve was used to determine the diagnostic value of SAP risk factors using binary logistic regression analysis. The comparison between the two groups showed that age, the baseline National Institutes of Health Stroke Scale (NIHSS) score, and the proportion of dysphagia, atrial fibrillation, and total anterior circulation infarct were higher, and the proportion of lacunar circulation infarct was lower in the SAP group (P < 0.001). In terms of laboratory data, the SAP group had considerably greater neutrophil counts and PLR, while the non-SAP group (P < 0.001) had significantly lower lymphocyte counts and triglycerides. Binary logistic regression analysis revealed that older age (aOR = 1.062, 95% CI: 1.023-1.102, P = 0.002), atrial fibrillation (aOR = 3.585, 95% CI: 1.605-8.007, P = 0.019), and PLR (aOR = 1.003, 95% CI: 1.001-1.006, P = 0.020) were independent risk factors associated with SAP after adjusting for potential confounders. The sensitivity and specificity of PLR with a cutoff value of 152.22 (AUC: 0.663, 95% CI: 0.606-0.717, P = 0.0006) were 57.5% and 70.6%, respectively. This study showed that high PLR is an associated factor for SAP in AIS patients. Increased systemic inflammation is linked to SAP in ischemic stroke. Inflammatory biomarkers that are easily accessible may aid in the diagnosis of high-risk SAP patients.

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Conflict of interest statement

The authors declare that they have no conflicts of interest.

Figures

Figure 1
Figure 1
Flow diagram of the patient selection process.
Figure 2
Figure 2
PLR levels and SAP. Violin plot of PLR distribution in patients with SAP and without SAP.
Figure 3
Figure 3
The receiver operating characteristic (ROC) curve analysis of platelet-to-lymphocyte ratio for predicting SAP.
See this image and copyright information in PMC

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References

    1. GBD 2017 Disease and Injury Incidence and Prevalence. Global, regional, and national age-sex-specific mortality for 282 causes of death in 195 countries and territories, 1980-2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet . 2018;392(10159):1736–1788. doi: 10.1016/S0140-6736(18)32279-7. - DOI - PMC - PubMed
    1. Feigin V. L., Norrving B., Mensah G. A. Global burden of stroke. Circulation Research . 2017;120(3):439–448. doi: 10.1161/circresaha.116.308413. - DOI - PubMed
    1. Finlayson O., Kapral M., Hall R., Asllani E., Selchen D., Saposnik G. Risk factors, inpatient care, and outcomes of pneumonia after ischemic stroke. Neurology . 2011;77(14):1338–1345. doi: 10.1212/wnl.0b013e31823152b1. - DOI - PubMed
    1. Harms H., Grittner U., Dröge H., Meisel A. Predicting post-stroke pneumonia: the PANTHERIS score. Acta Neurologica Scandinavica . 2013;128(3):178–184. doi: 10.1111/ane.12095. - DOI - PubMed
    1. Ji R., Shen H., Pan Y., et al. Novel risk score to predict pneumonia after acute ischemic stroke. Stroke . 2013;44(5):1303–1309. doi: 10.1161/strokeaha.111.000598. - DOI - PubMed