SAT-117 Prevalence of Vitamin D Depletion and Associated Factors among Patients Undergoing Bariatric Surgery in Southern Brazil
Abstract
Abstract Low levels of 25(OH) vitamin D [25(OH)D] are frequent in obese patients undergoing bariatric surgery. Hypovitaminosis D is a concern in these patients, since it could contribute to the bone loss seen after surgery, and potentially increase fracture risk . Despite post-operative supplementation, 25(OH)D often remains below recommended levels following surgery. Guidelines recommend that vitamin D levels are determined preoperatively. Nevertheless, the systematic determination of 25(OH)D in thousands of patients every year is costly. The prevalence of low levels of 25(OH)D seems to be high among Southern Brazilians. In this scenario, it may be unnecessary to check blood levels prior to introduction of supplementation in bariatric patients. The aim of this study was to evaluate the prevalence of vitamin D deficiency and associated factors in patients undergoing bariatric surgery in Southern Brazil. This was a Cross-sectional, observational study of all patients presenting for bariatric surgery at Hospital de Clínicas de Porto Alegre (a teaching hospital), from 2013 to 2018. Clinical and laboratory data were extracted from electronic records. Patients who were taking supplements containing vitamin D, had renal insufficiency or had missing data for 25(OH)D levels were excluded. Vitamin D status was determined using established cut-offs (deficient ≤19.9 ng/ml; insufficient 20-29.9 ng/mL; sufficient ≥30 ng/mL). Factors associated with vitamin D deficiency were analysed by…
How strong is the evidence?
Evidence Hub reads this as a cross-sectional, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 297 participants or records.
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