[Comparative study of the nutritional evolution of patients/candidates for bariatric surgery attended by the Unified Health System and the Supplemental Health Network].

A cross-sectional comparative study was conducted on the nutritional evolution of severely obese patients who are candidates for bariatric surgery attended by the Unified Health System (SUS) and the Supplemental Health Network (RS). The average preoperative follow-up period was 14.3 ± 7.7 months in the SUS and 2.4 ± 1.7 months in the RS. There was a predominance of females among patients attended by the SUS (80.6%) and by the RS (75.7%). A significant reduction in weight, BMI and waist circumference (WC) and total cholesterol values of patients of both health networks was observed. Patients attended by the SUS showed no significant decrease in LDL, Triglycerides and Fasting Glycemia, while patients assisted by the RS showed a significant reduction of these values. The greater weight loss among SUS patients is explained by the fact that they had been monitored for a longer period. The insignificant reduction of most biochemical indicators of SUS patients can be justified by the fact that they had a more advanced degree of obesity.