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Endothelium
Journal of Endothelial Cell Research
Volume 14, 2007 - Issue 4-5
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Regular Articles

Endothelial Dysfunction in Post-Myocardial Infarction Patients with Various Expressions of Risk Factors

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Pages 185-191 | Received 17 Nov 2006, Accepted 22 Jun 2007, Published online: 13 Jul 2009
 

Abstract

It has not been established yet whether patients who suffer myocardial infaction (MI) in the absence of classic risk factors also have endothelial dysfunction (ED), as has been shown for patients with risk factors, and if so, to what extent it is manifested. Young male patients in the stable phase after MI were included in the study. At the time of MI, 20 patients had high and 21 patients low expression of risk factors. The control group consisted of 35 healthy age-matched males. ED was estimated by ultrasound measurement of the endothelium-dependent dilation of the brachial artery, induced by the reactive hyperemia test. Compared to the control group, the level of endothelium-dependent vasodilation was significantly reduced in both groups of patients (controls: 9.1% ± 5.6%; patients with high risk: 5.5% ± 5.1%; patients with low risk: 5.6 ± 3.5 %; ANOVA, p<.01). There was no difference between both groups of patients. These results showed that ED is not associated or due only to classic risk factors. It appears that ED may occur and precede development of atherosclerosis in the absence of classic risk factors. These novel findings can have important clinical implications.

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