Summary
Thirty patients suffering from essential hypertension were treated successively with placebo, hydralazine alone, and pindolol (Visken®) combined with hydralazine. Hydralazine caused a statistically significant reduction in blood pressure and an increase in pulse rate as compared with the placebo: palpitations were an irritating side-effect. The combination of hydralazine and pindolol resulted in an additional fall in blood pressure (p<0.001) and the pulse rate decreased (2 p<0.001). The combined treatment also had a favourable effect on palpitations and angina pectoris.
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Persson, I. Combination therapy of essential hypertension with pindolol (Visken) and hydralazine. Eur J Clin Pharmacol 9, 91–93 (1975). https://doi.org/10.1007/BF00614002
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DOI: https://doi.org/10.1007/BF00614002