title: [Correlation of the Levels of Fructosamine and Glycated Hemoglobin with the Blood Glucose Profile in Pregnant Women with Diabetes Mellitus].
abstract: OBJECTIVE
  To evaluate the correlation of the levels of fructosamine and of glycated hemoglobin (HbA1c) with the frequency of blood glucose self-monitoring values out of the treatment target range in pregnant women with diabetes mellitus.
  
  
  METHODS
  We performed an observational, retrospective, cross-sectional study, including all pregnant women with diabetes who attended prenatal care visits at a tertiary teaching hospital during the year of 2014 and who presented at least 20 days of blood glucose self-monitoring prior to assessment of serum levels of fructosamine and HbA1c. Capillary blood glucose values out of the treatment target range were considered "hypoglycemia" when lower than 70 mg/dL and "hyperglycemia" when above the glycemic therapeutic target. We evaluated the correlation of the levels of fructosamine and of HbA1c with the frequencies of hyperglycemia and hypoglycemia recorded in the glucometer device by performing Tau-b of Kendall correlation tests. Next, linear regression tests were performed between the levels of HbA1c and of fructosamine and the frequencies of hypoglycemia and hyperglycemia.
  
  
  RESULTS
  We included 158 pregnant women, from whom 266 blood samples were obtained for assessing fructosamine and HbA1c levels. Measurements of fructosamine and of HbA1c presented, respectively, Kendall's τ coefficient of 0.29 (p < 0.001) and 0.50 (p < 0.001) regarding the frequency of hyperglycemia, and of 0.09 (p = 0.046) and 0.25 (p < 0.001) regarding the frequency of hypoglycemia. In the linear regression model, levels of fructosamine and of HbA1c respectively presented determination coefficients R2 = 0.265 (p < 0.001) and R2 = 0.513 (p < 0.001) for the prediction of hyperglycemia, and R2 = 0.033 (p = 0.003) and R2 = 0.059 (p < 0.001) for the prediction of hypoglycemia.
  
  
  CONCLUSIONS
  Levels of fructosamine and of HbA1c presented a weak to moderate correlation with the frequencies of hyperglycemia and hypoglycemia at blood glucose self-monitoring and were not able to accurately translate the deviations from the glycemic goals in pregnant women with diabetes.
authors.affiliation: Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Carolina Yumi
authors.initials: CY
authors.lastname: Fujimoto
authors.affiliation: Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Rafaela Alkmin
authors.initials: RA
authors.lastname: da Costa
authors.affiliation: Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Tatiana de Assunção
authors.initials: Tde A
authors.lastname: Zaccara
authors.affiliation: Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Cristiane de Freitas
authors.initials: Cde F
authors.lastname: Paganotti
authors.affiliation: Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
authors.forename: Rossana Pulcineli Vieira
authors.initials: RP
authors.lastname: Francisco
mesh_terms: D000328:Adult; D001786:Blood Glucose; D003430:Cross-Sectional Studies; D003920:Diabetes Mellitus / Q000097:blood*; D005260:Female; D019270:Fructosamine / Q000097:blood*; D006442:Glycated Hemoglobin / Q000032:analysis; D006801:Humans; D011247:Pregnancy; D011254:Pregnancy in Diabetics; D012189:Retrospective Studies
chemical_list: D001786:Blood Glucose; D019270:Fructosamine; D006442:Glycated Hemoglobin
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