Effects of molsidomine on hemodynamics and blood gases in acute myocardial infarction with left heart failure.

We studied the effects of molsidomine on hemodynamic properties and blood gas levels in eight patients with acute myocardial infarction and left heart failure. One hour after an 8 mg intravenous bolus injection, pulmonary wedge pressure and right atrial pressure decreased, respectively, from 30 +/- 9 to 23 +/- 12 mm Hg (p less than 0.01) and from 10.4 +/- 3.6 to 7.8 +/- 4.0 mm Hg (p less than 0.05) without significant changes in heart rate, cardiac index, or systemic blood pressure. There was a mild decrease in arterial oxygen tension (from 61 +/- 15 to 56 +/- 6 mm Hg), but it was not significant. The drug induced no adverse effects. Intravenous bolus injection of molsidomine rapidly relieves pulmonary congestion in patients with acute myocardial infarction.