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Evaluation of blood pressure control by ambulatory blood pressure monitoring and study of factors associated with poor blood pressure control in 300 treated hypertensive type 2 diabetic patients.

Ann Cardiol Angeiol (Paris). 2011 Jan 8. Ben-Hamouda-Chihaoui M, Kanoun F, Ftouhi B, Lamine-Chtioui F, Kamoun M, Slimane H. Service d'endocrinologie diabétologie, hôpital La Rabta, Jabbari, 1007, Tunis, Tunisie. Hypertension is frequently associated with type 2 diabetes and is often difficult to control.

AIM: Evaluate the frequency of controlled hypertension in our type 2 diabetic patients with known and treated hypertension and determine the factors associated with poor blood pressure control.

SUBJECTS AND METHODS: Prospective study concerning 300 type 2 diabetic patients with a known and treated hypertension, sex-ratio: 0.64, mean age: 61.2±9.1 years (37-86). All subjects underwent physical examination, biological investigations and a 24 hours ambulatory blood pressure monitoring (ABPM).

RESULTS: Hypertension was well controlled in 70 patients (23.3%). The concordance rate between clinical measure of blood pressure and ABPM was 70.3%. Subjects with uncontrolled hypertension were older (61.8±8.9 vs 59.1±9.3 years, P<0.05), more frequently of male sex (sex-ratio: 0.77 vs 0.34, P<0.01), smokers (36.4 vs 21.7%, P<0.05) and with abdominal adiposity (P<0.05). Duration of diabetes, body mass index and the frequency of peripheral neuropathy, retinopathy and coronary insufficiency were not different between the two groups. Diabetic nephropathy was more frequent (29.8 vs 16.1%, P<0.05) in the group with uncontrolled hypertension. Loss of circadian blood pressure rhythm was noted in 239 patients (79.6%) and it was more frequently observed in patients with uncontrolled hypertension (84 vs 66%, P<0.001).

CONCLUSION: Our type 2 diabetic patients had a poorly controlled hypertension. Close monitoring of blood pressure with adjustment of antihypertensive treatment are necessary to improve cardiovascular prognosis of our patients.

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