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Τετάρτη 10 Μαΐου 2017

Prevalence of primary aldosteronism among patients with type 2 diabetes

Abstract

Context

Diabetes and hypertension coexist in 40-60% of individuals with type 2 diabetes. The coexistence of this two conditions is associated with increased risk of retinopathy, nephropathy and cardiovascular disease.

Objective

To investigate the prevalence of primary aldosteronism (PA) in a general cohort of persons with type 2 diabetes.

Design

Cross-sectional study involving 6 diabetes outpatient clinics in Sweden.

Patients

Were enrolled individuals with type 2 diabetes between February 2008 and December 2013.

Measurements

Plasma aldosterone concentrations (PAC pmol/L) and direct renin concentrations (DRC mIU/L) were measured. Patients with increased aldosterone renin ratios (ARR) >65 were further evaluated for PA.

Results

Of 578 consecutively screened patients with type 2 diabetes, 27 were treated with mineralocorticoid receptor antagonists (MRA) and potassium-sparing diuretics not further evaluated. Among the remaining 551 patients, 38 had increased ARR, including 22 who were clinically indicated for PA tests and 16 who were not further evaluated due to severe comorbidities and old age. There were 5 (0.93%) patients with confirmed PA after computerized tomography and adrenal venous sampling. Patients with PA had higher systolic blood pressure (p= 0.032) and lower potassium levels (p=0.027) than those without PA. No significant association was found between plasma aldosterone and diabetic complications.

Conclusions

The prevalence of PA in an unselected cohort of patients with type 2 diabetes is relatively low, and measures of plasma aldosterone are not strong risk factors for micro- and macrovascular diabetic complications.

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