Metabolic control in children with insulin dependent diabetes mellitus assessed by hemoglobin A1c

Insights

Hemoglobin A1c monitoring in children with insulin-dependent diabetes mellitus revealed seasonal variations and a link to growth. Improved metabolic control was observed during summer months, highlighting the importance of frequent testing for managing diabetes in children.

Area of Science:

  • Pediatrics
  • Endocrinology
  • Clinical Chemistry

Background:

  • Insulin-dependent diabetes mellitus (IDDM) requires careful metabolic control in children.
  • Glycosylated hemoglobin (hemoglobin A1c) is a key marker for long-term glucose regulation.

Purpose of the Study:

  • To assess the utility of hemoglobin A1c in monitoring metabolic control in pediatric IDDM patients.
  • To investigate correlations between hemoglobin A1c, clinical control, growth, and seasonal factors.

Main Methods:

  • Hemoglobin A1c levels were measured using iso-electric focusing in 92 children with IDDM over 18 months.
  • Metabolic control was assessed clinically and correlated with hemoglobin A1c levels and growth parameters.

Main Results:

  • A significant correlation was found between hemoglobin A1c and clinical metabolic control.
  • Lower hemoglobin A1c levels were observed during summer (June-July), indicating improved control.
  • Poorly controlled diabetic children (hemoglobin A1c > 12.5%) showed improved carbohydrate tolerance and lower hemoglobin A1c by study end.
  • Retarded linear growth correlated directly with poorer metabolic control (higher hemoglobin A1c).

Conclusions:

  • Hemoglobin A1c is valuable for routine management of pediatric IDDM, especially in cases of poor control.
  • Frequent hemoglobin A1c monitoring is essential due to rapid glucose profile variations in these patients.
  • Seasonal variations in hemoglobin A1c suggest environmental influences on metabolic control in diabetic children.

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