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Value of diagnostic tools for myocardial ischemia used in routine clinical practice to predict cardiac events in patients with type 2 diabetes mellitus: a prospective study

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Author(s): Azevedo Mirela J. de | R. Neto André F. | Caramori Maria Luiza A. | Beck Maristela O. | Moreira Juliano S.R. | Ludwig Roberto | Gross Jorge L.

Journal: Arquivos Brasileiros de Endocrinologia & Metabologia
ISSN 0004-2730

Volume: 50;
Issue: 1;
Start page: 46;
Date: 2006;
Original page

Keywords: Coronary artery disease | Cardiac events | Risk factors | Type 2 diabetes

ABSTRACT
OBJECTIVE: To analyze tests used in routine clinical practice for the diagnosis of myocardial ischemia to predict the development of cardiac events in type 2 diabetic patients. METHODS: The occurrence of cardiac events (new myocardial infarct, myocardial re-vascularization procedures, congestive heart failure, acute pulmonary edema, sudden death, and death after myocardial infarction or pulmonary edema) were prospectively assessed in a cohort of 135 type 2 diabetic patients after up to seven years of follow-up. At baseline, coronary artery disease was assessed by the WHO cardiovascular questionnaire, resting electrocardiogram, and stress myocardial scintigraphy. RESULTS: Forty-eight cardiac events were observed in 41 patients (10.5 events/100 patients-year). In a Cox's proportional-hazard model only the presence of symptoms of coronary artery disease on the WHO cardiovascular questionnaire alone (RR= 2.13, 95% CI 1.11-4.07, P= 0.022) or in combination with abnormalities on resting ECG (RR= 2.03, 95% CI 1.05-3.92, P= 0.034) or on myocardial scintigraphy (RR= 1.89, 95% CI 1.001-3.57, P= 0.050) predicted cardiac events, adjusted for fasting plasma glucose, mean blood pressure, body mass index, peripheral vascular disease and diabetic nephropathy. CONCLUSION: The WHO cardiovascular questionnaire, a simple tool for the diagnosis of coronary artery disease, is a significant predictor of cardiac events in type 2 diabetic patients.
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