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Antihypertensive therapy with an angiotensin receptor blocker is not associated with reductions in cardiovascular or all-cause mortality compared to non-ARB-based regimens in patients with type 2 diabetes, according to researchers at the Massachusetts College of Pharmacy and Health Sciences.
Antihypertensive therapy with an angiotensin receptor blocker (ARB) is not associated with reductions in cardiovascular or all-cause mortality compared to non-ARB-based regimens in patients with type 2 diabetes, according to researchers at the Massachusetts College of Pharmacy and Health Sciences.
From a literature search, they identified 11 randomized, controlled trials in which an ARB was compared with placebo or an active control in type 2 diabetes with hypertension. Six studies reported blood pressure data and 6 reported all-cause mortality. This data was reported at the 45th midyear meeting of the American Society of Health-System Pharmacists.
There were no significant differences between ARBs and controls in systolic blood pressure (SBP) or diastolic blood pressure (DBP), with a mean difference of 0.364 mmHg in SBP (P=.8) and 0.7 mmHg in DBP (P=.3).
The incidence of cardiovascular mortality was 58.7% in the groups assigned to an ARB compared to 57.3% in the controls (P=.84).
"ARBs should not be used as a first-line treatment in the treatment of hypertension in patients with type 2 diabetes until long-term follow-up can justify its benefit in cardiovascular outcomes," the researchers said. "ARB-based blood pressure reduction strategies can be reserved for second- and third-line use or as part of combination therapy."
Outcomes data from 2 unpublished trials of ARB-based therapy-ORIENT (Olmesartan Reducing Incidence of End Stage Renal Disease in Diabetic Nephropathy Trial) and ROADMAP (Randomized Olmesartan and Diabetes Microalbuminuria Prevention Study) will provide clarity, they said.