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  • Title: Sublingual isosorbide dinitrate in severe congestive heart failure.
    Author: Markiewicz W, Rochman J, Peled B.
    Journal: Cardiology; 1981; 67(3):172-9. PubMed ID: 7273045.
    Abstract:
    Sublingual isosorbide dinitrate was administered to 17 patients with severe congestive heart failure to characterize the hemodynamic action of the drug. Isosorbide dinitrate effect was maximal 30-60 min after administration. The most striking effect was a marked fall of the mean pulmonary capillary wedge pressure which dropped from 28 to 20 mm Hg (p less than 0.01). Pulmonary artery systolic pressure dropped from 55 to 43 mm Hg (p less than 0.01) and right atrial pressure from 11 to 8 mm Hg (p less than 0.01). Arterial blood pressure fell slightly whereas no significant change in heart rate or cardiac index was noted. 8 of the 17 patients showed a marked and sustained reduction of their pulmonary capillary wedge pressure. The hemodynamic response was moderate in 2 patients whereas 6 patients showed no appreciable improvement. A symptomatic but transient reduction in arterial blood pressure occurred in the last patient. Patients responding favorably to the drug had significantly higher initial systolic blood pressure that nonresponders (133 vs. 102 mm Hg, p less than 0.01). However, there was no reliable clinical parameter to predict which of the subjects will respond favorably to the administration of isosorbide dinitrate.
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