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  • Title: Effect of oral dilevalol on forearm circulation in essential hypertension.
    Author: Giannattasio C, Seravalle G, Cattaneo BM, Perondi R, Grassi G, Zanchetti A, Mancia G.
    Journal: J Cardiovasc Pharmacol; 1992 Mar; 19(3):367-70. PubMed ID: 1378115.
    Abstract:
    In 7 patients with untreated mild essential hypertension, a single 200-mg dilevalol dose was administered orally. Blood pressure (BP, left brachial artery catheter), heart rate (HR), and left and right forearm blood flows were measured and left and right forearm vascular resistances were calculated before and for approximately 3 h after drug administration. Dilevalol administration was followed by a sustained reduction in BP, little change in HR, and a similar pronounced and sustained increase in left and right forearm blood flows and reduction in left and right forearm vascular resistances. At the end of the observation period, the changes in left forearm circulation were unaffected by left brachial artery infusion of saline but markedly reduced by left brachial artery infusion of propranolol at doses that had no effect on BP, HR, and contralateral forearm vasodilatation. Thus, at an oral dose exerting an antihypertensive effect, dilevalol induces a marked and persistent vasodilation due largely to the beta-adrenoceptor agonism of the drug.
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