Intracranial Carotid Artery Calcification Subtype in Patients with Anterior Circulation Acute Ischemic Stroke Undergoing Intravenous Thrombolysis

Author:

Zhu Jie,Liu Qiping,Zhuang Yuzhong,Wei Ran,Sun Yi,Wang Hao,Song Bin

Abstract

Background and Aim: The aim of this study was to investigate the potential value of intracranial carotid artery calcification (ICAC) in therapeutic efficacy and functional outcomes in patients with anterior circulation acute ischemic stroke (AIS) undergoing intravenous thrombolysis. Materials and Methods: A total of 207 patients with anterior circulation AIS who underwent intravenous thrombolysis were enrolled in this retrospective study. We divided them into three groups according to thin-slice head noncontrast computed tomography as follows: no ICAC, medial ICAC, and intimal ICAC. The differences in risk factors of different ICAC subtypes were compared, and the effect of ICAC subtype on hemorrhage transformation (HT) after intravenous thrombolysis was also evaluated. Functional outcomes were assessed at 90 days using the modified Rankin Scale. Results: Compared to the no and intimal ICAC, patients with the medial ICAC were older and more likely to have diabetes mellitus, hyperlipidemia, previous stroke, and atrial fibrillation. Moreover, the medial ICAC group had a high baseline National Institute of Health Stroke Scale (NIHSS) score and a high incidence of HT. Multivariate logistic regression analysis showed that baseline NIHSS score (odds ratio [OR]: 1.121, 95% confidence interval [CI]: 1.027–1.224) was independently associated with HT. Medial ICAC (OR: 7.418, 95% CI: 1.190–46.231) and baseline NIHSS score (OR: 1.141, 95% CI: 1.042–1.250) were independent risk factors of poor functional outcome at 90 days. Conclusions: Medial ICAC could be a new imaging biomarker for predicting functional outcomes in patients with anterior circulation AIS undergoing intravenous thrombolysis. Medial ICAC and baseline NIHSS score were independently associated with poor prognosis at 90 days.

Publisher

Medknow

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