Does metabolic syndrome predict significant angiographic coronary artery disease?

Abstract

Introduction: Metabolic syndrome (MS) is an independent predictor of acute cardiovascular events. However, few studies have addressed the relationship between MS and stable angiographic coronary artery disease (CAD), which has a different pathophysiological mechanism. We aimed to study the independent predictors for significant CAD, and to analyze the impact of MS (by the AHA/NHLBI definition) on CAD. Methods: We prospectively included 300 patients, mean age 64 ± 9 years, 59% male, admitted for elective coronary angiography (suspected ischemic heart disease), excluding patients with known cardiac disease. All patients underwent assessment of demographic, anthropometric, and laboratory data and risk factors, and subsequently underwent coronary angiography. Results: In the study population, 23.0% were diabetic, 40.5% had MS (and no diabetes) and 36.7% had neither diagnosis. Significant CAD was present in 51.3% of patients. CAD patients were older and more frequently male and diabetic, with increased triglycerides and glucose and lower HDL cholesterol. Abdominal obesity was also less prevalent. MS was not associated with the presence of CAD (OR 0.94, 95% CI 0.59---1.48, p=0.778). Of the MS components, the most important predictors of CAD were increased glucose and triglycerides. Abdominal obesity was associated with a lower risk of CAD. In a multivariate logistic regression model for CAD, independent predictors of CAD were age, male gender, glucose and triglycerides. Body mass index had a protective effect. Conclusions: Although MS is associated with cardiovascular events, the same was not found for stable angiographically proven CAD. Age, gender, diabetes and triglycerides are the most influential factors for CAD, with abdominal obesity as a protective factor. Resumo Introdução: A síndrome metabólica (SM) é um predizente independente de eventos cardiovasculares agudos. Contudo, pouco estudos analisaram a relação entre SM e doença arterial coronária angiográfica estável (DAC), que apresenta uma diferente mecanismo fisiopatológico. Procurámos identificar os factores predizentes independentes para DAC e analisar o impacto da presença de SM (pela definição da AHA/NHLBI) na DAC. Métodos: Analisamos prospectivamente 300 indivíduos, com idade media de 64 ± 9 anos, 59% do género masculino, admitidos para angiografia coronária eletiva por suspeita de cardiopatia isquémica, tendo sido excluídos os doentes com antecedentes de doença cardíaca. Todos os doentes foram submetidos a avaliação demográfica, antropométrica, fatores de risco e laboratorial e subsequentemente a coronariografia. Resultados: Na população do estudo, 23,0% eram diabéticos, 40,5% tinha SM (sem diabetes) e 36,7% nenhum dos anteriores diagnósticos. Verificou-se DAC significativa em 51,3% dos doentes. Estes doentes tinham mais idade, mais do género masculino, diabéticos, com triglicéridos e glicemia aumentados e colesterol-HDL baixo. A obesidade abdominal era também menos prevalente. A SM não se associou com a presença de DAC (OR 0,94, IC 95% 0,59--...

Is metabolic syndrome related with coronary artery disease severity and complexity: An observational study about IDF and AHA/NHLBI metabolic syndrome definitions

“…Patients with MS are at increased risk of cardiovascular events (2-fold increase in cardiovascular outcomes, cardiovascular mortality, myocardial infarction and stroke, and a 1.5-fold increase in all-cause mortality) [3,4]. However, there is still a controversy about the association of MS with stable coronary artery disease (CAD) [5][6][7][8][9][10].…”

Coronary artery disease in a rural population of Bangladesh: is dyslipidemia or adiposity a significant risk?

“…But, logistic regression analysis disproved its effect on CAD. MetS though associated with CAD, it has not been found consistent [17,18]. Smoking was found significant (Table-2: p=0.02) in bivariate analysis, but ultimately was found insignificant.…”