Which Factors Are Associated with a Higher Prevalence of Anemia Following Bariatric Surgery? Results from a Retrospective Study Involving 1999 Patients.

Introduction: Anemia in obese patients is common and multifactorial and is also a complication of bariatric surgery. The aim of this study is to establish which variables are associated with a higher prevalence of post-bariatric surgery anemia.

Methods: Retrospective cohort study involving 1999 patients submitted to bariatric surgery with a follow-up period of 4 years.

Variable Thresholds of Vitamin D Plasma Levels to Suppress PTH: the Effect of Weight and Bariatric Surgery.

Background: Serum 25-hydroxyvitamin D [25(OH)D] and parathormone (PTH) have an inverse relation. The 25(OH)D threshold required to maximally suppress PTH has been used as a marker of optimal vitamin D status. Obesity is associated with lower serum levels of 25(OH)D and higher levels of PTH; however, the relation between these hormones in this setting is not well established.

Analyzing the Impact of Bariatric Surgery in Kidney Function: a 2-Year Observational Study.

Background: Obesity is an independent risk factor for chronic kidney disease (CKD). Our aims were: (1) to evaluate the impact of bariatric surgery (BS) on kidney function, (2) clarify the factors determining postoperative evolution of glomerular filtration rate (ΔGFR) and urinary albumin-to-creatinine ratio (ΔUACR), and (3) access the occurrence of oxalate-mediated renal complications.

Methods: We investigated a cohort of 1448 obese patients who underwent BS.