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  • Title: Effect of flosequinan in patients with acute-onset heart failure complicating acute myocardial infarction.
    Author: Schneeweiss A, Wynne RD, Marmor A.
    Journal: Crit Care Med; 1989 Sep; 17(9):879-81. PubMed ID: 2766758.
    Abstract:
    We studied the hemodynamic effect of a single dose of the new direct-acting vasodilator, flosequinan, in ten patients with severe acute-onset heart failure complicating acute myocardial infarction (MI) resistant to high iv doses of diuretics, nitrates, and dobutamine. Flosequinan was added to conventional therapy at 3.8 +/- 0.5 days after infarction in the form of a single 100-mg oral dose. Hemodynamic measurements were performed every hour for 4 h after administration, without any other drug being added. The nitrate infusion rate was kept constant. Flosequinan produced hemodynamic improvement in this group. The effect peaked at 1 to 2 h and remained at this level at 4 h. Pulmonary capillary wedge pressure decreased from 27.2 +/- 5.4 to 16.4 +/- 3.0 mm Hg, and cardiac output increased from 3.5 +/- 0.3 to 4.1 +/- 0.4 L/min (p less than .001 for both). Cardiac index, stroke index, and left ventricular stroke work index were significantly increased. Pulmonary arterial and right atrial pressures, and systemic and pulmonary vascular resistances were also significantly reduced. Heart rate was not significantly altered. Mean systemic arterial pressure was slightly reduced. Flosequinan administration was not associated with symptomatic hypotension, cardiac arrhythmias, or other adverse events, and the hemodynamic effect was not related to the pretreatment serum sodium concentration. We conclude that flosequinan is effective in producing acute hemodynamic improvement in patients with heart failure complicating acute MI resistant to conventional therapy.
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