Avaliação dos índices pré e pós-operatórios de cálcio, vitamina D e densitometria óssea em obesos submetidos ou não à cirurgia bariátrica no Hospital de Clínicas da Universidade Federal do Triângulo Mineiro

Abstract

Introduction: Every day the number of obese people in the world grows, and the demand for bariatric surgery accompanies this growth. Nutritional disturbances are often identified, as well as vitamin supplementation and poor physical activity. This management may trigger complications, such as loss of bone mineral quality. Objective: To analyze the profile of bone metabolism in patients before or after bariatric surgery using the Roux-en-Y gastric bypass technique performed at the Bariatric Surgery Service of the Clinical Hospital of the Federal University of Triângulo Mineiro, comparing the prevalence of vitamin supplementation, physical exercises and of possible abnormalities in the dosages of calcium, vitamin D and bone mineral density. Methods: Twenty-four patients were analyzed in a cross-sectional study and divided into two distinct groups, one who underwent bariatric surgery and the other who did not. Serum calcium, vitamin D and bone mineral density were compared and analyzed for prevalence of variables such as vitamin supplementation and exercise. Results: When the groups submitted or not submitted to surgery were tested and compared, a statistical difference was verified in relation to the BMI (p <0.001), higher prevalence of vitamin supplementation in the operated group (p = 0.008) and higher prevalence of changes in vitamin D (p = 0.011) in the non-operated group. On the other hand, there was no statistical difference regarding the prevalence of physical exercise practice between the groups (p = 0.973), BMD (p = 0.223) and calcium (p = 0.474). Conclusions: When comparing the groups about the use of vitamin supplementation, the operated group was more prevalent regarding the use of the medication, which suggests that the patient at the UFTM Obesity clinic complies with the proposed guidelines. This fact is associated to the condition of better control of vitamin D levels in this group, which presented lower prevalence of altered vitamin results, whereas in the non-operated group, the prevalence of altered dosages was marked. No significance was found regarding the prevalence of physical exercise among groups, changes in bone mineral density and calcium dosage.