PMID: 7332738Nov 1, 1981

Atenolol in the treatment of pregnancy-induced hypertension

British Journal of Clinical Pharmacology
K J ThorleyJ M Cruickshank


1 The pharmacological properties of atenolol suggest its possible usefulness in pregnancy-induced hypertension. The pharmacokinetics of atenolol in the pregnant woman, concentrations in cord blood, and its effects on maternal blood pressure and the foetus, are evaluated. 2 We studied 13 pregnant women with hypertension, most of them uncontrolled on methyldopa. Whole blood concentrations and urinary excretion of the drug were measured over 24 h following a 100 mg dose. Effects on maternal blood pressure, pulse rate and foetal heart rate and cardiotocograph were compared for the 4 days before treatment and the first 4 days of treatment. The birth weights and Apgar scores of the babies were recorded. 2 The pharmacokinetics of atenolol (plasma half-life of about 8 h) in pregnant women do not differ from the findings in the non-pregnant. The levels of atenolol in the cord blood were confirmed as approximately equal to those in the maternal blood. 4 In the ten women in whom blood pressure was assessed a small significant fall in blood pressure was observed. 5 A 5% mean fall in foetal heart rate resulted but in one case was a rate below 120 beats/min recorded. There was no evidence of depression of the stress response of the foetal he...Continue Reading


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Related Concepts

Fetal Structures
Hypertensive Disease
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