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Noninvasive assessment of endothelial function in response to oxypurinol. Flow-mediated dilation of the brachial artery was measured before coronary procedure and immediately after the coronary intervention in eight consecutive patients. Forearm-mediated dilation significantly increased after acute oxypurinol treatment (5.1 ± 1.5 vs 7.6 ± 1.5%, p < 0.01).
