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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: BACKGROUND, METHODS, RESULTS. Meshes: Adolescent, Adult, Albuminuria, Analysis of Variance, Anemia, Sickle Cell, Blood Transfusion, Child, Child, Preschool, Female, Humans, Male, Prevalence, Retrospective Studies, Risk Factors, United States.
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Do early blood transfusions protect against microalbuminuria in children with sickle cell disease? Context: Microalbuminuria (MA) is an early indicator for glomerulopathy in sickle cell disease (SCD). We reviewed the medical records of asymptomatic patients ages 4-20 with sickle hemoglobinopathies, who were screened for MA in order to find out its prevalence and risk factors. Nineteen of 120 (15.8%) screened patients had MA detected by spot urine (mean albumin absolute value 6.95 +/- 0.56 mg/dl) and abnormal albumin to creatinine ratios (79.8 +/- 0.62 mg/g creatinine). Twenty four-hour urine collections confirmed 57% of MA cases by spot urine. There was no difference in hyperfiltration between positive and negative patients. From the MA-positive patients, 15 had SS (16.8% of SS group) and 4 had SC (18% of SC group). Nineteen percent of children 10 years of age or older had MA, as compared to 8% of the younger children (P = 0.018), demonstrating that increasing age is a risk factor for MA. There was a positive correlation between MA and acute chest syndrome. Young age at start of chronic transfusions was inversely related to MA and therefore renoprotective (P = 0.03). We did not see a protective effect in the group of patients taking hydroxyurea for a relatively short time, mean age at start of treatment 12 +/- 5 years; however the sample was small.
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We conclude that: (1) children with sickle cell hemoglobinopathies 10 years or older should be screened for MA and (2) chronic transfusions starting at an early age may be renoprotective. Final Decision: yes