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hypertensive patients.' In this study nifedipine plus diuretic lowered blood pressure more effectively than propranolol plus diuretic, which has previously been shown to be effective in black hypertensive patients.2 Although comparisons of fixed doses of drugs have limitations, the doses of propranolol and nifedipine used were in the middle of their therapeutic ranges. Experience in Kenyan hypertension clinics confirms reports that black hypertensive patients have lower plasma renin activities than white patients. Perhaps because of this, we found nifedipine plus diuretic to be an excellent combination for treating hypertension among black Kenyan patients.
Fletcher et al. (Sat,) studied this question.