Prevalência de síndrome metabólica em diabetes mellitus tipo 2 e associação com doença coronariana

Abstract

Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia resulting from insulin secretion defects, in its peripheral action, or both. Clinical manifestations of diabetes are broad and can range from asymptomatic glucose intolerance to acute complications as diabetic ketoacidosis or complications of slow evolution, such as neurological and vascular changes. Vascular changes affect virtually every body's blood vessels, large and small ones, constituting macro-and microangiopathy, respectively. The main clinical expressions of microangiopathy are diabetic nephropathy and retinopathy. The macroangiopathy is represented by early atherosclerosis, more severe and more frequent than that observed in non-diabetic population. The non-establishment or definition of a glycemic threshold in diabetic patients and the persistence of this relationship in non-diabetics suggest that glucose is a continuous variable risk, as well as other cardiovascular risk factors. The diabetic dyslipidemia is characterized by an increase in LDL small and dense particles, the reduction in HDL-cholesterol and high triglycerides levels. Diabetes or pre-diabetes, low HDL-cholesterol, high triglycerides and arterial hypertension are risk factors, when linked to central obesity, form the metabolic syndrome and 1.5-fold increase in overall mortality and 2.5 in cardiovascular mortality. Given the above, the purpose of the study was to assess the prevalence of metabolic syndrome according to the definition of the National Cholesterol Education Program Adult Treatment Panel III in patients with type 2 diabetes mellitus, its association and components with coronary disease. A total of 610 patients with type 2 diabetes mellitus were retrospectively analyzed, concerning age, gender, clinical and metabolic characteristics. The prevalence of metabolic syndrome was 78.4%. The comparative analysis between the groups with and without metabolic syndrome was significantly associated with coronary artery disease (p=0.032). By means of logistic regression, waist circumference (p=0.79) and fasting glucose (p=0.13) were not significant. The arterial hypertension (p=0.01) and dyslipidemia (p=0.005) showed significant association with coronary artery disease. Therefore, we can conclude that the metabolic syndrome is highly prevalent in patients with type 2 diabetes mellitus; it has shown an association with coronary heart disease and among its components, arterial hypertension and dyslipidemia indicate a significant association.