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Aortic flow propagation velocity as an early predictor of high coronary risk in hypertensive patients.
Medicinski Glasnik 2012 Februrary
AIM: To assess the value of aortic flow propagation velocity (Vp) in detecting hypertensive patients with coronary risk.
METHODS: The study included 120 patients with hypertension. According to the 10-year risk of coronary heart disease the patients were categorized in the three groups: 10-year risk < 10% (I),10 - year risk=%10 - 20 (II), and 10-year risk > 20% (III). The aortic flow propagation velocity (Vp) was measured from descending aorta with color M-mode echoardiography. The slope of the first aliasing contour was accepted as Vp. It was compared with Framingham coronary risk score, carotid intima media thickness and high sensitive C-reactive protein. Twelve patients were excluded from the study due to poor acoustic window.
RESULTS: The Vp was significantly lower (p<0.001), carotid intima media thickness and high sensitive C-reactive protein was significantly higher in group III (p=0.002 and p=0.014). The area under ROC curve of Vp, carotid intima media thickness and high sensitive C-reactive protein were 0.890, 0,700 and 0.664, respectively. There was a significant inverse relation between Vp and carotid intima media thickness (r=-0.37; p<0.001).
CONCLUSIONS: The aortic flow propagation velocity is a simple, feasible and reproducible marker of atherosoclerosis with an acceptable sensitivity and specificity. There is a need for longitudinal prospective studies to use it routinely.
METHODS: The study included 120 patients with hypertension. According to the 10-year risk of coronary heart disease the patients were categorized in the three groups: 10-year risk < 10% (I),10 - year risk=%10 - 20 (II), and 10-year risk > 20% (III). The aortic flow propagation velocity (Vp) was measured from descending aorta with color M-mode echoardiography. The slope of the first aliasing contour was accepted as Vp. It was compared with Framingham coronary risk score, carotid intima media thickness and high sensitive C-reactive protein. Twelve patients were excluded from the study due to poor acoustic window.
RESULTS: The Vp was significantly lower (p<0.001), carotid intima media thickness and high sensitive C-reactive protein was significantly higher in group III (p=0.002 and p=0.014). The area under ROC curve of Vp, carotid intima media thickness and high sensitive C-reactive protein were 0.890, 0,700 and 0.664, respectively. There was a significant inverse relation between Vp and carotid intima media thickness (r=-0.37; p<0.001).
CONCLUSIONS: The aortic flow propagation velocity is a simple, feasible and reproducible marker of atherosoclerosis with an acceptable sensitivity and specificity. There is a need for longitudinal prospective studies to use it routinely.
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