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Association between vitamin D levels and mortality in hemodialysis patients: a cohort study.
da Silva Canhos, Maryanne Machado; de Oliveira, Rogério Carvalho; Modelli de Andrade, Luis Gustavo; Caramori, Jacqueline Costa Teixeira; Barretti, Pasqual; Martin, Luis Cuadrado.
Afiliação
  • da Silva Canhos MM; Division of Nephrology, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
  • de Oliveira RC; Division of Nephrology, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
  • Modelli de Andrade LG; Division of Nephrology, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
  • Caramori JCT; Division of Nephrology, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
  • Barretti P; Division of Nephrology, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
  • Martin LC; Division of Nephrology, Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
Ren Fail ; 42(1): 225-233, 2020 Nov.
Article em En | MEDLINE | ID: mdl-32126885
Introduction: Low vitamin D levels are associated with mortality in hemodialysis (HD) patients; however, the serum vitamin D thresholds are unclear. This study aimed to identify the vitamin D level below which mortality increases in HD patients.Methods: A cohort of HD patients enrolled from January 2014 to January 2017 was evaluated. The variables were analyzed according to the season, namely, summer, winter, and annual average, mortality was the primary outcome. The patients were assigned to vitamin D quintiles, and multivariate Cox regression analysis adjusted for age, ethnicity, gender, body mass index (BMI), inhibitors of the renin-angiotensin system, statin, calcitriol, and antiplatelet drugs use, hemodialysis vintage, hypertension, diabetes mellitus, atherosclerotic disease, and C-reactive protein was performed.Results: There were studied 306 patients. Vitamin D levels of 18.0-23.6 ng/mL (hazard ratio [HR] = 4.30; 95% confidence interval [CI] 1.60-11.54, p = 0.004) and <18.0 ng/mL (HR = 3.83; 95% CI: 1.42-10.35, p = 0.008) in summer and vitamin D levels of 21.5-27.1 ng/mL (HR = 3.70; 95% CI: 1.50-9.11, p = 0.004) and ≤17.5 ng/mL (HR = 2.84; 95% CI: 1.13-7.13, p = 0.026) in winter were associated with mortality. The average annual values of vitamin D associated with all-cause mortality were <17.7 ng/dL (adjusted HR = 4.25, 95% CI: 1.57-11.48, p = 0.004), and between >17.7 ng/dL and ≤23.1 ng/dL (adjusted HR = 3.91, 95% CI: 1.47-10.42, p = 0.006).Conclusions: Annual average vitamin D levels <23.1 ng/mL were associated with higher all-cause mortality, regardless of the confounding variables evaluated.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Vitamina D / Deficiência de Vitamina D / Diálise Renal / Falência Renal Crônica Tipo de estudo: Etiology_studies / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Adult / Aged / Female / Humans / Male / Middle aged País/Região como assunto: America do sul / Brasil Idioma: En Revista: Ren Fail Assunto da revista: NEFROLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Vitamina D / Deficiência de Vitamina D / Diálise Renal / Falência Renal Crônica Tipo de estudo: Etiology_studies / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Limite: Adult / Aged / Female / Humans / Male / Middle aged País/Região como assunto: America do sul / Brasil Idioma: En Revista: Ren Fail Assunto da revista: NEFROLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido