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In a selected cohort of patients, both the D/D genotype of the ACE gene, and high plasma activity of the enzyme are significantly associated with in-stent restenosis. Continued study with clinically different subsets of patients and various stent designs is warranted.

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Endothelial function measured with brachial ultrasound (BU) is a validated prognostic factor in heart failure patients. LVAD (left ventricle assist device) application is a promising surgical technique to treat refractory heart failure patients both as a bridge to heart transplantation or as destination therapy. Clinical recovery in such patients may be associated to normal endothelial function measured by BU but, as recently reported, only in pulsatile flow LVAD patients. The present paper report a case of normal endothelial function even in a axial LVAD patient.