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Ongoing treatment with renin-angiotensin-aldosterone-blocking agents does not predict normoalbuminuric renal impairment in a general type 2 diabetes population.

Journal article
Authors Henri Afghahi
Mervete Miftaraj
Ann-Marie Svensson
Henrik Hadimeri
Soffia Gudbjörnsdottir
Björn Eliasson
Maria K Svensson
Published in Journal of diabetes and its complications
Volume 27
Issue 3
Pages 229-34
ISSN 1873-460X
Publication year 2013
Published at Institute of Medicine
Institute of Medicine, Department of Molecular and Clinical Medicine
Pages 229-34
Language en
Links dx.doi.org/10.1016/j.jdiacomp.2012....
Keywords Normoalbuminuria; Renal impairment; Type 2 diabetes; Renin-angiotensin-aldosterone system; Cardiovascular; Risk factors
Subject categories Diabetology

Abstract

AIM: To examine the prevalence and the clinical characteristics associated with normoalbuminuric renal impairment (RI) in a general type 2 diabetes (T2D) population. METHODS: We included 94 446 patients with T2D (56% men, age 68.3±11.6years, BMI 29.6±5.3kg/m(2), diabetes duration 8.5±7.1years; means±SD) with renal function (serum creatinine) reported to the Swedish National Diabetes Register (NDR) in 2009. RI was defined as estimated glomerular filtration (eGFR)<60ml/min/1.73m(2) and albuminuria as a urinary albumin excretion rate (AER)>20μg/min. We linked the NDR to the Swedish Prescribed Drug Register, and the Swedish Cause of Death and the Hospital Discharge Register to evaluate ongoing medication and clinical outcomes. RESULTS: 17% of the patients had RI, and 62% of these patients were normoalbuminuric. This group of patients had better metabolic control, lower BMI, lower systolic blood pressure and were more often women, non-smokers and more seldom had a history of cardiovascular disease as compared with patients with albuminuric RI. 28% of the patients with normoalbuminuric RI had no ongoing treatment with any RAAS-blocking agent. Retinopathy was most common in patients with RI and albuminuria (31%). CONCLUSIONS: The majority of patients with type 2 diabetes and RI were normoalbuminuric despite the fact that 25% of these patients had no ongoing treatment with RAAS-blocking agents. Thus, RI in many patients with type 2 diabetes is likely to be caused by other factors than diabetic microvascular disease and ongoing RAAS-blockade.

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