Treatment of hypertension during pregnancy with hydralazine monotherapy or with combined therapy with hydralazine and pindolol

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Forty-four consecutive patients referred for treatment because of hypertension (> 150/90 mmHg) occurring during pregnancy were randomly allocated to one of two treatment groups, hydralazine alone ( n = 21) or hydralazine combined with pindolol ( n = 23). Satisfactory blood pressure control (diastolic pressure < 90 mmHg) was achieved in 86% of patients receiving hydralazine alone and 91% of those on combined therapy. Although the treatment did not lower the overall incidence of hypertensive complications it appeared to delay the onset of such complications until successful surgical intervention was possible. Fetal outcome was similar in both groups and there was no perinatal mortality in this high-risk population. Although blood pressure control was similar in both groups of patients, combined therapy with hydralazine and pindolol can be considered to be superior to hydralazine monotherapy, since in patients treated with the combination the incidence and intensity of troublesome side-effects was markedly lower.