A titrate-to-goal study of switching patients uncontrolled on antihypertensive monotherapy to fixed-dose combinations of amlodipine and olmesartan medoxomil ± hydrochlorothiazide.J Clin Hypertens (Greenwich). 2011 Jun; 13(6):404-12.JC
In the prospective, open-label, titrate-to-goal Blood Pressure Control in All Subgroups With Hypertension (BP-CRUSH) study, 999 patients with hypertension uncontrolled on monotherapy (mean age, 55.6 ± 11.4 years; baseline blood pressure [BP], 153.7 ± 9.2/91.9 ± 8.6 mm Hg) were switched to fixed-dose amlodipine/olmesartan medoxomil (AML/OM) 5/20 mg. Patients were uptitrated every 4 weeks to AML/OM 5/40 mg and 10/40 mg to achieve BP < 120/70 mm Hg. Patients were subsequently uptitrated every 4 weeks to AML/OM+hydrochlorothiazide (HCTZ) 10/40+12.5 mg and 10/40+25 mg to achieve BP <125/75 mm Hg. The primary end point, the cumulative percentage of patients achieving seated systolic BP < 140 mm Hg (< 130 mm Hg for patients with diabetes) by week 12, was 75.8%. The mean (± standard error) BP changes from baseline during the titration periods ranged from -14.2±0.4 mm Hg/-7.7 ± 0.3 mm Hg for AML/OM 5/20 mg to -25.1 ± 0.7 mm Hg/-13.7 ± 0.4 mm Hg for AML/OM+HCTZ 10/40+25 mg. By week 20, the cumulative BP threshold of <140/90 mm Hg was achieved by 90.3% of patients. An ambulatory BP monitoring substudy (n=243) showed that 24-hour efficacy was maintained. Treatment-emergent adverse events (TEAEs), mostly mild to moderate in severity, occurred in 529 patients (53.0%). Drug-related TEAEs occurred in 255 patients (25.5%). This well-tolerated, treat-to-goal algorithm enabled a large proportion of patients with uncontrolled hypertension on monotherapy to safely achieve BP control on single-pill AML/OM combination therapy or triple therapy with the addition of HCTZ. .