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Int. j. cardiovasc. sci. (Impr.) ; 28(3): 189-199, mai.-jun. 2015. tab
Article in Portuguese | LILACS | ID: lil-775241

ABSTRACT

Fundamentos: Dados mostram que a síndrome metabólica (SM) aumenta o risco de doença cardiovascular. Objetivos: Descrever e comparar as alterações cintilográficas e o valor preditivo de isquemia miocárdica emindivíduos com e sem SM, encaminhados para tomografia computadorizada de emissão de fóton único (SPECT)em Hospital Universitário utilizando três critérios diagnósticos de SM.Métodos: Estudo prospectivo observacional de pacientes encaminhados para SPECT de junho a dezembro 2010.Altura, peso e circunferência da cintura foram medidos. Levantamento de fatores de risco e revisão de prontuáriosmédicos foi realizado em busca de parâmetros para diagnóstico laboratorial de SM e relatórios completos deSPECT. Resultados: Foram incluídos 203 pacientes; 138 mulheres (68,0%); média de idade 63,6±11,5 anos. Apresentaram SM, 135 pacientes (66,5%). Entre os 99 exames alterados, 91,9% (n=91) ocorreram em pacientes com SM e 8,1%(n=8) em pacientes sem SM. Houve associação significativa entre a SM e a cintilografia anormal (67,0% vs. 11,8%;p<0,001) e os pacientes com SM tinham anormalidades de maior extensão e gravidade (escore de estresse somado(SSS)=7,3±6,5 vs. 3,0±0,9; p<0,001 e escore de diferença somado (SDS)=3,4±4,3 vs. 0,9±2,5; p<0,001). SM foi preditorindependente de isquemia miocárdica nas três definições estudadas (OR=10,07, 6,25 e 4,26 para NCEP-ATP IIImodificado, NCEP-ATP III e IDF, respectivamente). Conclusões: Pacientes com SM apresentaram mais defeitos de perfusão na SPECT (tanto fixa e reversível); e SMdefinida pelo NCEP-ATP III modificado foi o melhor preditor independente de isquemia miocárdica na cintilografia.


Background: Data show that metabolic syndrome (MS) increases the risk of cardiovascular disease.Objectives: To describe and compare the scintigraphic abnormalities and the predictive value of myocardial ischemia in individuals withand without MS referred for single photon emission computed tomography (SPECT) in a University Hospital using three diagnostic criteria.Methods: Prospective observational study of patients referred for SPECT from June to December 2010. Height, weight and waistcircumference were measured. Risk factors were assessed and medical records were reviewed to look for parameters for laboratorydiagnosis of MS and complete SPECT reports.Results: The study included 203 patients; 138 women (68.0%); mean age 63.6±11.5 years. Metabolic syndrome was found in135 patients (66.5%). Of the 99 abnormal tests, 91.9% (n=91) occurred in patients with MS and 8.1% (n=8) in patients withoutMS. There was a significant association between MS and abnormal scintigraphy (67.0% vs. 11.8%; p<0.001) and patients withMS had abnormalities of greater extent and severity (summed stress score (SSS)=7.3±6.5 vs. 3.0±0.9; p<0.001 and summed differencescore (SDS)=3.4±4.3 vs. 0.9±2.5; p<0.001). MS was an independent predictor of myocardial ischemia in the three definitions studied(OR=10.07, 6.25 and 4.26 for modified NCEP-ATP III, NCEP-ATP III and IDF, respectively).Conclusions: Patients with MS had more perfusion defects on SPECT (both fixed and reversible); and MS defined by the modifiedNCEP-ATP III was the best independent predictor of myocardial ischemia on scintigraphy.


Subject(s)
Humans , Male , Female , Aged , Cardiovascular Diseases/mortality , Risk Factors , Metabolic Syndrome/complications , Metabolic Syndrome/epidemiology , Tomography, Emission-Computed, Single-Photon/methods , Body Mass Index , Brazil/epidemiology , Diabetes Mellitus/diagnosis , United States/epidemiology , Hypertension/complications , Obesity, Abdominal/complications , Obesity/complications , Predictive Value of Tests , Prospective Studies
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