Labetalol in severe and resistant hypertension.
1 The efficacy of labetalol in the treatment of severe hypertension (diastolic greater than or equal to 115 mm Hg) was studied retrospectively. Ten patients were followed for more than 6 months. At 6 months, eight were well controlled and the mean dose in those was 975 mg daily. Four of these were receiving labetalol alone; two were on labetalol and diuretic only. 2 Three patients were resistant to doses of 1600, 1800 and 2400 mg daily respectively; two of these were controlled with increased doses of vasodilator drugs. In two cases labetalol had produced large falls in the standing BP while not influencing the supine BP. 3 Three other resistant patients were seen, of whom one merely required an increase in dose to 2200 mg daily and the addition of a diuretic. Both the others were elderly, had severe vascular disease, and suffered disabling postural hypotension on a dose of labetalol which did not influence the supine BP. 4 Labetalol can control severe hypertension. There remain patients whose supine BP is not influenced by a dose of labetalol which produces marked postural hypotension.
D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000187:drug effects; D004351:Drug Resistance; D004983:Ethanolamines / Q000627:therapeutic use*; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D007741:Labetalol / Q000627:therapeutic use*; D008875:Middle Aged
D004983:Ethanolamines; D007741:Labetalol