Little effect of ordinary antihypertensive therapy on nocturnal high blood pressure in patients with sleep disordered breathing

American Journal of Hypertension
L PelttariI M Kantola

Abstract

The antihypertensive effects of four different antihypertensive medications (beta-blocking agent, atenolol 50 mg; calcium-antagonist, isradipine SRO [slow release] 2.5 mg; diuretic, hydrochlorothiazide [HCTZ] 25 mg; and angiotension converting enzyme-inhibitor, spirapril 6 mg) on obese patients with sleep disordered breathing and hypertension were compared by the ambulatory blood pressure measurement (ABPM). Eighteen patients were randomized in a double-blind, crossover fashion to receive each of the four different medications for 8 weeks. ABPM was performed at baseline and after an 8-week treatment with these medications. A 2- to 3-week washout period occurred both at baseline and between each of the four medications. Three patients were omitted from statistical analysis because of technical problems of ABPM. Atenolol, isradipine SRO, and spirapril decreased significantly (P < .01) the mean 24-h systolic blood pressure, whereas HCTZ did not. The mean 24-h diastolic blood pressure decreased significantly after all four medications: 12 (SD+/-14) mm Hg with atenolol, 7 (SD+/-10) mm Hg with isradipine SRO, 3 mm Hg (SD+/-14) with HCTZ, and 6 (SD+/-15) mm Hg with spirapril (P < .01). During nighttime none of the medications reduced ...Continue Reading

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