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Incremental predictive value of carotid arterial strain in patients with stroke

 Woo-In Yang  ;  Ki-Woon Kang  ;  Hye Young Lee  ;  Chi-Young Shim  ;  Geu-Ru Hong  ;  Namsik Chung  ;  Jong-Won Ha 
 International Journal of Cardiovascular Imaging, Vol.34(6) : 893-902, 2018 
Journal Title
 International Journal of Cardiovascular Imaging 
Issue Date
Carotid artery ; Stroke ; Ultrasound ; Velocity vector imaging
Although increased carotid intima-media thickness (IMT) is a well-known risk factor for stroke, carotid IMT alone is not sufficient for risk stratification. The assessment of arterial properties using velocity vector imaging (VVI) represents a new method for quantifying structural changes. We sought to investigate the characteristics and the clinical value of carotid arterial mechanics using VVI in patients with stroke. Fifty male patients (55 ± 5 years) with stroke, 30 healthy age-matched volunteers (54 ± 8 years), and 30 healthy young male volunteers (29 ± 5 years) were evaluated. The peak circumferential strain, strain rate, and the standard deviation of the time to peak strain and strain rate, representing the synchronicity of the arterial expansion, were analyzed using VVI of the left common carotid artery. The circumferential strain and strain rate significantly decreased with age, and patients with stroke showed the lowest degree of strain and strain rate compared with healthy age-matched volunteers. In addition, patients with stroke showed decreased strain and strain rate even in participants with a normal carotid IMT (< 0.8 mm). Although carotid IMT did not improve the incremental predictive value of stroke over that of multiple clinical risk factors (diabetes mellitus, hypertension, coronary artery disease, smoking), adding carotid arterial strain and strain rate provided an incremental predictive value over both multiple risk factors and carotid IMT for stroke. Along with assessment of conventional risk factors, VVI analysis could provide improved risk stratification for stroke.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
심지영(Shim, Chi Young) ORCID logo https://orcid.org/0000-0002-6136-0136
정남식(Chung, Nam Sik)
하종원(Ha, Jong Won) ORCID logo https://orcid.org/0000-0002-8260-2958
홍그루(Hong, Geu Ru) ORCID logo https://orcid.org/0000-0003-4981-3304
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