Angiotensin Receptor Blocker Selection for Hypertension Management
Patient Selection and Treatment Outcomes
- The American Diabetes Association recommends that for patients with diabetic nephropathy and macroalbuminuria, losartan or irbesartan are the preferred ARBs, with losartan being the only ARB with FDA-approved indication specifically for reducing hard renal endpoints in type 2 diabetic nephropathy 1
- Losartan is the first-choice ARB based on the landmark RENAAL trial, which demonstrated a 16% reduction in the composite endpoint of doubling serum creatinine, ESRD, or death, with 25% reduction in sustained doubling of serum creatinine and 29% reduction in ESRD 1
- Irbesartan is equally effective based on the IDNT trial, showing similar renoprotective efficacy in type 2 diabetic nephropathy with macroalbuminuria 1
Combination Therapy and Monitoring
- The American Heart Association suggests that multiple-drug therapy is generally required to achieve BP targets, particularly in diabetic kidney disease, and that enhancing efficacy with thiazide or loop diuretics is recommended as 60-90% of patients in major ARB trials used concomitant diuretics 1, 2, 3
- The American Diabetes Association recommends that patients on ARB therapy should be monitored for serum creatinine/eGFR and potassium within 7-14 days after initiation or dose change, and at least annually 2, 3
Contraindications and Pitfalls
- The American College of Cardiology advises against using ARBs in pregnancy, symptomatic hypotension, uncontrolled hyperkalemia, and bilateral renal artery stenosis 1
- The European Society of Cardiology recommends avoiding the combination of ARB + ACE inhibitor, as this increases adverse events without mortality benefit, and never combining ARB + direct renin inhibitor due to lack of added benefit and increased adverse events 1, 2, 3, 6