The Predictive Value of C-Reactive ProteinAlbumin Ratio in Long-Term Mortality Among Patients Undergoing Carotid Artery Stenting

Abstract

Introduction: Several inflammatory biomarkers reported in previous research have been associated with the severity of carotid artery stenosis, symptomatic carotid lesions, and carotid stent restenosis. The C-reactive protein (CRP)-to-serum albumin ratio (CAR) has been shown to predict peripheral artery disease severity in patients with carotid artery disease (CAD). However, the relationship between CAR and long-term mortality in CAD patients following carotid artery stenting (CAS) remains uncertain. The goal of this study was to investigate the ability of CAR to predict long-term mortality in patients with CAS. Patients and Methods: A total of 998 CAD patients who had percutaneous carotid artery intervention were reviewed retrospectively, and 482 of them without follow-up data were excluded from this study. The study included patients who had percutaneous carotid artery intervention between 2012 and 2018. Before the procedure, serum CRP, complete blood counts, and albumin levels were measured. The relationships between patients’ characteristics, procedural details, and CAR with all-cause mortality were evaluated in the long-term follow-up after CAS. Results: Older age (HR= 1.044; 95% CI= 1.001-1.089; p= 0.046), smoking (HR= 2.636; 95% CI= 1.213- 5.728; p= 0.014), blood urea (HR= 1.017; 95% CI= 1.002-1.033; p= 0.025), albumin (HR= 0.252; 95% CI= 0.132-0.480; p< 0.001), CRP levels (HR= 1.336; 95% CI= 1.055-1.691; p= 0.016) and CAR (HR= 1.012; 95% CI= 1.003-1.022; p= 0.008) were statistically associated with all-cause mortality at 55.2 ± 12.4 months follow-up after CAS in multivariate COX regression analysis. Conclusion: In patients undergoing CAS, CAR was independently related to long-term mortality. CAR could be used in this population for risk stratification to achieve closer follow-up and optimize treatment.

Keywords

• C-reactive protein
• carotid artery stenosis
• mortality
• serum albumin
• stents

References

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