Thursday, November 14, 2013

VA NEPHRON-D study

Another nail in the coffin for combination ACE/ARB in diabetic nephropathy!
http://www.nejm.org/doi/full/10.1056/NEJMoa1303154?query=TOC

Also see Kiran/Pradeep's posts on this article on Nov 10th.
Regarding Pradeep's question: might there still be a role for combined ACE/ARB in non-diabetics with CKD and proteinuria?  Obviously this study was in diabetics and will not directly inform ACE+ARB use in non-diabetics. But its impressive that their findings generally confirm those in ONTARGET, suggesting adverse outcomes (renal failure, hyperkalemia) with combination therapy.  ONTARGET included both diabetics and non-diabetics, and subgroup analysis suggested the adverse outcomes were not affected by the presence/absence of diabetes.

So I will continue to consider combined ACE/ARB only in very exceptional circumstances (perhaps multi-drug resistant hypertension and/or severe refractory proteinuria), and only with diligent laboratory monitoring.


4 comments:

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  2. Understanding the risks of combined ACEI/ARB and dual RAAS blockade, I would rather consider using low dose aldosterone blockers in patients with proteinuria with acceptable renal function. Although no solid data , this seems to be the logical approach. There are couple of interesting investigational drugs that may benefit for patients with diabetic nephropathy with proteinuria, eGFR of 25-75 ml/min and stable or max RAAS blockers and consider them referring to research center.

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    1. Kiran: are you aware of any data (or any physiologic rationale) supporting ACE+aldactone as safer than ACE+ARB? My sense is the studies with ACE+aldactone just haven't been done on the same scale as the ACE+ARB studies. If they were, I suspect we would see the same type of outcomes re: hyperkalemia, AKI.

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