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KMID : 0390320160260020069
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Chungbuk Medical Journal
2016 Volume.26 No. 2 p.69 ~ p.74
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Evaluation of Prognostic Factors for Carotid Plaque Surface Irregularity in Patients with Acute Ischemic Stroke: Preliminary Study
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Park Young-Tae
Lee Hye-Lim
Yeo Min-Ju
Kim Ji-Seon
Lee Sung-Hyun
Lee Sang-Soo
Shin Dong-Ick
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Abstract
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Purpose: The presence of atherosclerotic carotid plaque is a well-established risk factor for ischemic stroke. Irregular or ulcerated plaque surface morphology has also been correlated with advancing stenosis and is independently associated with ischemic stroke. The purpose of this study was to evaluate the relationship between plaque surface irregularities in the extracranial carotid artery measured by B-mode ultrasound, risk factors, and the stroke prognosis in patients with acute ischemic stroke.
Materials and Methods: Extracranial carotid plaque irregularities were evaluated bilaterally with B-mode ultrasonography in 98 patients who visited Chungbuk National University Hospital due to acute ischemic stroke from September 1, 2013 to August 30, 2014. The correlation between carotid plaque irregularities, risk factors for ischemic stroke, and 90-day functional outcome was assessed.
Results: Among the 98 patients, 34 had irregular carotid plaques, and 64 had smooth plaques. The irregular group was older (p <0.001) and had a higher incidence of hypertension (p = 0.030) and higher blood glucose levels (p = 0.046) than those in the smooth group. The 90-day modified Rankin scale scores for the irregular and smooth groups were 1.3 ± 1.3 and 0.9 ±1.0 (p = 0.136).
Conclusion: Our results show that surface carotid plaque irregularities measured by ultrasound are associated with older age, hypertension, and blood glucose levels among the stroke risk factors. However, carotid artery surface irregularities did not affect 90-day functional outcome compared to that of a smooth carotid artery surface.
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KEYWORD
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Carotid artery, Plaque irregularity, Stroke, Risk factors, Ultrasound
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