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Hyperinsulinism in infancy: diagnosis by demonstration of abnormal response to fasting hypoglycemia

C A Stanley, L Baker

    Pediatrics
    |May 1, 1976
    PubMed

    Insights

    Infants with hyperinsulinism show lower beta-hydroxybutyrate and free fatty acid levels during fasting hypoglycemia. This metabolic profile aids in diagnosing hyperinsulinism in infants.

    Area of Science:

    • Biochemistry
    • Pediatric Endocrinology

    Background:

    • Hyperinsulinism is a significant cause of hypoglycemia in infants.
    • Accurate diagnosis is crucial for appropriate management and preventing long-term complications.

    Observation:

    • Metabolic responses to fasting hypoglycemia were studied in infants with hyperinsulinism, control infants, and infants with ketotic hypoglycemia.
    • Key metabolic markers including insulin, beta-hydroxybutyrate, and free fatty acids were analyzed.
    • Four out of seven infants with hyperinsulinism did not exhibit elevated insulin levels during hypoglycemia.

    Findings:

    • Infants with hyperinsulinism demonstrated significantly lower levels of beta-hydroxybutyrate compared to control and ketotic hypoglycemia groups.
    • Lower levels of free fatty acids were also observed in infants with hyperinsulinism.
    • Established normal ranges for metabolic markers during fasting hypoglycemia allow for diagnostic differentiation.

    Implications:

    • Fasting hypoglycemia metabolic profiles, particularly beta-hydroxybutyrate and free fatty acid levels, can aid in diagnosing hyperinsulinism.
    • This diagnostic approach offers a valuable tool for pediatricians managing infants with hypoglycemia.
    • Understanding these metabolic adaptations is key to early and accurate diagnosis of infant hyperinsulinism.

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