Usefulness of aortic strain analysis by velocity vector imaging as a new echocardiographic measure of arterial stiffness

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
Kye Hun KimJung Chaee Kang

Abstract

The role of velocity vector imaging (VVI) in evaluating arterial stiffness is not well known. We investigated the usefulness of vascular strain analysis by VVI in evaluating arterial stiffness. Heart-femoral and brachial-ankle pulse wave velocities (PWVs) were measured as standard parameters of arterial stiffness. Intima-media thickness (IMT), fractional shortening (FS), fractional area change (FAC) by two-dimensional (2D) and VVI methods, and peak circumferential strain (PS) of the descending thoracic aorta were measured as echocardiographic parameters of arterial stiffness and compared with PWV in 137 patients (53.8 +/- 13.4 years, 71 male). Heart-femoral PWV was 9.0 +/- 2.4 m/s, and brachial-ankle PWV was 14.1 +/- 3.0 m/s. Aortic IMT was 0.97 +/- 0.23 mm, and FS was 10.0% +/- 4.0%. FAC was 10.9% +/- 5.2% by 2D tracing and 10.3% +/- 5.1% by the VVI method. PS was 5.4% +/- 3.0%. PS showed significant negative correlation with aortic IMT (r = -0.49, P < .01) and PWV (heart-femoral: r = -0.67, brachial-ankle: r = -0.75, P < .01). PS showed significant positive correlation with FS (r = 0.80, P < .01) and FAC (2D tracing: r = 0.86, VVI: r = 0.88, P < .01). Aortic IMT showed significant positive correlation with PWV (heart-femoral:...Continue Reading

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Citations

Nov 6, 2012·European Heart Journal Cardiovascular Imaging·Rogério TeixeiraLuís Providência
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