Efficacy of a new single-pill combination of a thiazide-like diuretic and a calcium channel blocker (indapamide sustained release/amlodipine) in essential hypertension
Abstract
OBJECTIVES: The current international, 12-week, double-blind, randomized, controlled trial assessed the efficacy and safety of indapamide sustained release/amlodipine single-pill combination (SPC) in mild-to-moderate hypertensive patients.
METHODS: Following a 4-week run-in period on amlodipine 5 mg, patients (SBP 150-180 mmHg and/or DBP < 110 mmHg) were randomized to indapamide 1.5 mg sustained release/amlodipine 5 mg SPC or amlodipine 5 mg/valsartan 80 mg SPC with conditional uptitration at week 6. Office blood pressure (BP) was assessed at baseline, weeks 6 and 12; ambulatory and home blood pressure monitoring (ABPM/HBPM) at baseline and week 12.
RESULTS: Baseline characteristics were similar in both groups (57 years, 51% men, BP 160/92 mmHg). 233 patients were randomized to IndSR/Aml and 232 to amlodipine/valsartan, of whom 48 and 57% were uptitrated, respectively. After 12 weeks, office SBP/DBP decreased similarly with both treatments (-21/-8 vs. -20/-8 mmHg) leading to BP control in 50% and BP response in 70% of patients. Uptitration was effective (P < 0.001) with both regimens, in favour of IndSR/Aml (SBP/DBP -12/-6 vs. -7/-3 mmHg, respectively). ABPM (n = 273) and HBPM (n = 194) confirmed 24-h efficacy of both regimens. In the subgroup of patients with sustained uncontrolled hypertension assessed by ABPM (n = 216), office SBP/DBP decreased by -23/-13 vs. -18/-10 mmHg, respectively (P = 0.016/P = 0.135, post-hoc analysis). Both treatments were generally well…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 273 participants or records.
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