Key result
Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers confer similar cardioprotection and renoprotection, showing little to no benefit from their combination.
Why the study?
Are ACE inhibitors and ARBs distinguishable based on cardiovascular and renal outcomes, and is dual RAAS blockade advantageous?
Are ACE inhibitors and ARBs distinguishable based on cardiovascular and renal outcomes, and is dual RAAS blockade advantageous?
ACE inhibitors and ARBs provide similar cardioprotection and renoprotection, while the benefits of dual blockade and their effects on incident diabetes remain areas of ongoing investigation.
Drugs that inhibit the renin-angiotensin-aldosterone system (RAAS) are the cornerstone of therapy for cardiovascular and renal disease because they protect against worsening outcomes in the respective target organs. Recent results from the Ongoing Telmisartan Alone and in Combination with Ramipril Global Endpoint Trial (ONTARGET) have confirmed that angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs) confer similar cardioprotection and renoprotection, showing little to no benefit from the combination in cardiovascular disease. It is not yet clear whether one class is superior to another for renoprotection. Whether dual RAAS blockade is more advantageous than single blockade, and in which patients, is also yet to be clearly determined. The Long-Term Impact of RAS Inhibition on Cardiorenal Outcomes (LIRICO) study will compare the cardiorenoprotective effects of ACE inhibitors and ARBs in patients with albuminuria, and clarify the role of dual blockade. Preliminary evidence that RAAS inhibitors reduce incident diabetes is intriguing. Whether ARBs can reduce incident diabetes and related cardiovascular outcomes is awaited with the Nateglinide and Valsartan in Impaired Glucose Tolerance Outcomes Research (NAVIGATOR) trial.
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Kalaitzidis et al. (2009) conducted a review in Cardiovascular and renal disease in nephropathy. Renin-angiotensin-aldosterone system (RAAS) blockers was evaluated. Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers confer similar cardioprotection and renoprotection, showing little to no benefit from their combination.
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