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Impact of white-coat hypertension on microvascular complications in type 2 diabetes

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Impact of white-coat hypertension on microvascular complications in type 2 diabetes

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Título Impact of white-coat hypertension on microvascular complications in type 2 diabetes
Autor Kramer, Caroline Kaercher
Leitão, Cristiane Bauermann
Canani, Luis Henrique Santos
Gross, Jorge Luiz
Abstract OBJECTIVE— The purpose of this study was to determine the impact of white-coat hypertension (WCH) on microvascular complications in type 2 diabetes. RESEARCH DESIGN AND METHODS— A cross-sectional study was conducted in normotensive patients and patients with WCH selected from a cohort of 319 type 2 diabetic patients. Normotension was defined by office blood pressure 140/90 mmHg and daytime blood pressure 135/85 mmHg on ambulatory blood pressure monitoring (ABPM). WCH was defined as office blood pressure 140/90 mmHg and daytime blood pressure 135/85 mmHg on ABPM. Subjects were evaluated for diabetic nephropathy (24-h urinary albumin excretion rate) and diabetic retinopathy (classified according to the Global Diabetic Retinopathy Group). RESULTS— Forty-six type 2 diabetic patients hadWCH(14.4%; mean age 56.6 years; 45.3% men) and 117 had normotension (36.6%; mean age 55.8 years; 37.5% men). These groups did not differ in clinical and main laboratory characteristics. Systolic ABPM (24-h: 124.7 6.7 vs. 121.0 8.5 mmHg, P 0.01 and daytime: 126.6 7.2 vs. 123.2 8.2 mmHg, P 0.01) and blood pressure loads were higher in subjects withWCHthan in the normotensive subjects.WCH was associated with an increased risk for macroalbuminuria (odds ratio 4.9 [95% CI 1.3–18.7], P 0.01). On multivariate analysis models, WCH was associated with macroalbuminuria (2.0 [1.3–3.2], P 0.02) and increased the risk for both nonproliferative and proliferative diabetic retinopathy (2.7 [1.2– 6.6], P 0.02 for any degree of diabetic retinopathy) after adjustments for confounding factors. CONCLUSIONS— Type 2 diabetic patients with WCH have an increased risk for diabetic retinopathy and diabetic nephropathy. Therefore, WCH should not be considered a harmless condition, and treatment should be considered.
Contido em Diabetes care. New York. Vol. 31, no. 12 (Dec. 2008), p. 2233-2237
Assunto Angiopatias diabéticas
Diabetes mellitus tipo 2
Hipertensão
Nefropatias diabéticas
Retinopatia diabética
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/21560
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