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  • Title: Central and regional hemodynamic effects of flosequinan for congestive heart failure.
    Author: Haas GJ, Binkley PF, Carpenter JA, Leier CV.
    Journal: Am J Cardiol; 1989 Jun 01; 63(18):1354-9. PubMed ID: 2658526.
    Abstract:
    The central and regional hemodynamic effects of flosequinan, a new orally administered vasodilator, were examined in 10 patients with moderate to severe congestive heart failure. A single-blind design was used to compare a standard dose of flosequinan (100 mg) with placebo. Flosequinan produced a statistically significant increase in cardiac output, primarily through its augmentation of stroke volume. This response was accompanied by significant reductions in systemic vascular resistances and right and left ventricular filling pressures. A reduction in pulmonary artery pressure and total pulmonary vascular resistance also was observed. The vasodilatory actions of flosequinan improved overall left ventricular performance; the inotropic indexes measured were not altered. There were no significant changes in upper limb, renal or hepatic-splanchnic blood flow or in the vascular resistances of these regions after flosequinan administration. The upper limb venous capacitance increased significantly. First-dose flosequinan evokes favorable central hemodynamic changes and improves overall left ventricular performance in patients with congestive heart failure. The acute augmentation in cardiac output, however, is not accompanied by a preferential alteration of flow to any of the major vascular regions studied.
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