PMID: 6108817Dec 1, 1980Paper

Dose-response curve and time course of the antihypertensive effect of SKF 92 657, a beta-receptor-blocking and vasodilating compound

Clinical Science
G LeonettiA Zanchetti

Abstract

1. The antihypertensive effect of the new drug, SKF 92 657, a hydrazinopyridazine derivative, possessing both beta-adrenoreceptor-blocking and vasodilating properties, was investigated in essential hypertension. 2. Single oral doses of 1.0 or 2.0 mg/kg did not produce any consistent decrease in blood pressure; 4.0 mg/kg was the threshold dose for a mild but not significant blood pressure reduction, whereas 8.0 mg/kg caused a significant and marked blood pressure decrease without clinically relevant changes in heart rate. 3. Continued administration of the drug for 7 days induced a significant and uniform reduction in blood pressure without tachycardia. The increase in systolic blood pressure and in heart rate caused by dynamic exercise was left unaffected by the drug.

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