BACKGROUND: No evidence supports obesity cutoff points recommended by literature for the Brazilian population. Some female/male known cutoff points are: waist circumference (WC) 80/90cm, waist-to-hip ratio (WHR) 0.80/0.90, conicity index (CI) 1.18/1.25, body mass index (BMI) 30. These cutoff points need to be validated for the Brazilian population as prognostic after percutaneous coronary intervention (PCI). OBJECTIVE: To verify cutoff points of obesity anthropometric indexes in this population and to compare them to International Diabetes Federation values for Latin America in determining MACE after PCI. METHODS: 308 patients (mean age 61.92 ± 11.06 years old, 60.7% men) undergoing successful PCI. Six months after, patients were contacted for clinical follow-up. MACE included death, acute myocardial infarction, cardiac surgery, reintervention or evidence of myocardial ischemia in a non-invasive test. Patients were divided into 2 groups: group 1 (with MACE, n = 91), Group 2 (without MACE, n = 217). In order to obtain cutoff points, ROC curves were plotted based on anthropometric indexes and MACE. RESULTS: The cutoff points obtained for women were: WC 102cm, WHR 0.93, CI 1.18 and BMI 24.53. Compared with IDF values, WC and WHR obtained had more specificity (76.83% X 31.71% and 43.9% X 7.32%), BMI had more sensibility (66.67% X 20.51%). For men, the cutoff points were: WC 102 cm, WHR 0.94, CI 1.24 and BMI 24.98. WC and WHR had more specificity (69.63% X 45.19% and 7.41% X 2.94%). BMI and CI had more sensibility (65.38% X 28.85% and 55.77% X 53.85%). CONCLUSION: Cutoff points of anthropometric indexes of this population that better correlate with MACE are different than the literature. Our results suggest that, for prognostic information, we need specific anthropometric cutoff points for each population or disease.
Obesity; Anthropometry; Angioplasty, transluminal, percutaneous coronary
