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      Glycemic patterns detected by continuous subcutaneous glucose sensing in children and adolescents with type 1 diabetes mellitus treated by multiple daily injections vs continuous subcutaneous insulin infusion.

      Archives of pediatrics & adolescent medicine
      Adolescent, Area Under Curve, Blood Glucose, metabolism, Child, Cross-Over Studies, Diabetes Mellitus, Type 1, blood, drug therapy, Female, Glycemic Index, Hemoglobin A, Glycosylated, Humans, Hyperglycemia, prevention & control, Hypoglycemia, Hypoglycemic Agents, administration & dosage, Injections, Subcutaneous, methods, Insulin, Insulin Infusion Systems, Male, Time Factors

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          Abstract

          To compare glycemic patterns by mode of therapy in children with type 1 diabetes mellitus using the Continuous Glucose Monitoring System (CGMS). Open randomized crossover comparing 3(1/2) months of multiple daily injections (MDI) and continuous subcutaneous insulin infusion (CSII). Tertiary care, university-affiliated medical center. Patients Twenty-three children and adolescents with type 1 diabetes mellitus. The CGMS was applied for 72 hours after 1 month and at the end of each study arm. Hemoglobin A(1c) levels and glucose level profiles were compared between the 2 study arms and the 2 sensor applications for each arm. The arms were similar for mean (SD) hemoglobin A(1c) levels (CSII, 8.0% [0.8%]; and MDI, 8.2% [0.8%]) and glucose levels. Areas under the curve were significantly larger during MDI for nocturnal and 24-hour hypoglycemia (P =.01 and.04, respectively) and for postprandial hypoglycemia and hyperglycemia (P =.03 and.05, respectively). The rate of hyperglycemia increased during CSII (P =.03), but 24-hour duration and area under the curve for hyperglycemia were similar. Compared with the first CGMS reading in each arm, the second had a longer mean duration of postprandial within-target glucose levels (P =.04), tendency for lower rate of diurnal hypoglycemic events (P =.1), shorter duration of nocturnal hypoglycemia (P =.05), and smaller 24-hour area under the curve for hypoglycemia (P =.04). Intensive treatment with CSII seemed to be associated with slightly better prebreakfast, postprandial, and within-target glucose profiles than MDI, as well as a smaller area under the curve for hypoglycemia. Lower hypoglycemia-related variables in the second sensor reading in each arm indicate that the CGMS may serve as an educational tool to decrease the rate and magnitude of hypoglycemia.

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