Abstract
Minoxidil, a new vasodilator antihypertensive compound, was given to 9 uremic patients with severe hypertension uncontrollable with currently available drugs. Addition of minoxidil in doses of 5 to 10 mg twice daily to their prior therapy, resulted in satisfactory control of blood pressure in all patients. Supine blood pressure fell from a control value of 200 ± 6/124 ± 3 to 164 ± 5/91 ± 2 mm Hg (mean and standard error) after administration of minoxidil, and no patient experienced orthostatic hypotension. Tachyphylaxis has not been seen during a follow-up period averaging 26 weeks. Side effects resulting from minoxidil have been limited to mild hypertrichosis in 2 patients, nausea in another 2 and fluid retention, which was readily controlled by either hemodialysis or furosemide. Minoxidil appears, therefore, to provide a means for controlling blood pressure in patients with severe hypertension resistant to all other antihypertensive drugs.
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