Clinical pharmacology and therapeutics
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Clin. Pharmacol. Ther. · Jan 1986
Comparative Study Clinical Trial Controlled Clinical TrialComparative effects of metoprolol and celiprolol on cardiac hemodynamics and left ventricular volume at rest and during exercise-induced angina.
Celiprolol is a cardioselective beta-adrenoceptor antagonist with attributed cardiostimulant properties. Its hemodynamic profile was compared in a dose-response study with that of metoprolol, which is also cardioselective but lacks cardiostimulatory activity. In 24 patients with angiographically proved coronary artery disease, simultaneous hemodynamic and left ventricular ejection fraction (EF) values were determined at rest in the control (drug-free) state and repeated 3 to 5 minutes after each of four intravenous boluses of celiprolol, 1, 1, 2, and 4 mg, or equivalent beta-blocking doses of metoprolol, 1.25, 1.25, 2.5, and 5.0 mg. ⋯ At exercise both drugs reduced cardiac index and heart rate, but neither altered the EF. The cardiac function curve demonstrated greater depression at rest after metoprolol than after celiprolol; these differences were attenuated during dynamic exercise. The lesser adverse impact of celiprolol on cardiac function may be attributable to ancillary cardiac stimulatory properties offsetting the cardiac depression after beta-adrenoceptor blockade.