Prognostic Nutrition Index May Predict Cerebral Embolic Events Following Carotid Artery Stenting Procedure

Abstract

Introduction: Cerebral embolism after carotid artery stenting (CAS) remains a matter of concern in frailty patients. The prognostic nutrition index (PNI), which provides an objective assessment of nutritional status, is a useful prognostic indicator in cardiovascular diseases. We aim to determine the value of pre-procedural PNI in predicting cerebral embolism including stroke, transient ischemic attack (TIA), and silent new ischemic cerebral lesions (SNICLs). Patients and Methods: We retrospectively evaluated 138 patients (mean age= 70.6 ± 6.7 years, male= 99) who underwent CAS. Inclusion criteria were as follows: i) availability of all medical records including albumin value and lymphocyte count, ii) having cranial imaging after CAS, iii) having symptomatic carotid stenosis 50-99% or asymptomatic carotid stenosis ≥60-99%. The study population was divided into two subgroups according to the presence of cerebral embolism as cerebral embolism (+) cerebral embolism (-) groups. Results: Among the study population, 22 patients (16%) had at least 1 SNICL, seven patients (5.0%) had an ischemic stroke, and five patients (3.6%) had TIA. The cerebral embolism (+) group had a significantly lower PNI, older age, more frequent history of stroke, a higher proportion of type III aortic arch, and longer fluoroscopy time than the cerebral embolism (-) group. Low PNI was identified as one of the independent predictors of cerebral embolism (OR= 0.808; 95% CI= 0.670-0.975; p= 0.026), and PNI lower than 44.7 predicted cerebral embolism with a sensitivity of 70.6% and a specificity of 61.1% (AUC= 0.739; 95% CI= 0.651 to 0.827; p< 0.001). Conclusion: The current data suggest that PNI is an independent prognostic factor for cerebral embolic complications after CAS procedures.

Keywords

• Stroke
• magnetic resonance imaging
• carotid artery
• stent endovascular

References

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