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  • Title: Comparative efficacy of aliskiren monotherapy and ramipril monotherapy in patients with stage 2 systolic hypertension: subgroup analysis of a double-blind, active comparator trial.
    Author: Andersen K, Weinberger MH, Egan B, Constance CM, Wright M, Lukashevich V, Keefe DL.
    Journal: Cardiovasc Ther; 2010 Dec; 28(6):344-9. PubMed ID: 20406241.
    Abstract:
    Aliskiren is the first direct renin inhibitor approved for the treatment of hypertension. Blood pressure (BP) control in stage 2 hypertension with aliskiren monotherapy has not been reported. This was a post hoc analysis of the subgroup of patients with stage 2 systolic hypertension (baseline mean sitting systolic BP [msSBP]≥160 mmHg) who completed the 12-week monotherapy phase of a 6-month, double-blind, randomized study. A total of 175 patients were randomized to aliskiren 150 mg (n = 88) or ramipril 5 mg (n = 87) with optional up-titration to aliskiren 300 mg or ramipril 10 mg, respectively, at weeks 6 and 12. In the subgroup of patients with stage 2 systolic hypertension, aliskiren lowered msSBP and mean sitting diastolic BP (msDBP) by 22.3/12.7 mmHg from baseline to week 12; compared with a reduction of 18.1/10.2 mmHg with ramipril. The maximum BP reductions achieved with aliskiren were 60.0/34.0 mmHg (from a baseline of 172.7/107.3 mmHg). Aliskiren was noninferior (P < 0.0001) to ramipril for SBP reduction with nonsignificant superiority (P = 0.052), and superior (P = 0.043) to ramipril for DBP reduction. The proportion of patients who achieved BP control (<140/90 mmHg) after 12 weeks of monotherapy was larger with aliskiren (34/88, 38.6%) than with ramipril (22/87, 25.3%; P = 0.038). In this post hoc analysis, 12 weeks of monotherapy with aliskiren 150-300 mg provided effective mean BP reductions (22/13 mmHg) and was superior to ramipril 5-10 mg in controlling BP in patients with stage 2 systolic hypertension.
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