Hyperinsulinism in a neonate

Area of Science:

• Neonatal Medicine
• Pediatric Endocrinology
• Perinatal Biology

Background:

• A male infant was born at 33 weeks gestation, small for gestational age (SGA), with a birth weight of 1,663 grams.
• Delivery via cesarean section was indicated due to non-reassuring fetal heart tones and maternal decreased fetal movement.

Observation:

• The neonate developed respiratory distress and severe hypoglycemia (24 mg/dL) within an hour of birth.
• Initial management with intravenous dextrose did not fully correct the hypoglycemia.
• An atrophic and calcified placenta was noted on gross examination.

Findings:

• Laboratory evaluation revealed thrombocytopenia, hypomagnesemia, and hyponatremia.
• The patient required empirical antibiotics (ampicillin and gentamicin) for suspected sepsis.
• Persistent hypoglycemia despite glucose infusion indicated a potential underlying metabolic issue.

Implications:

• This case highlights the importance of a comprehensive diagnostic workup for neonates presenting with respiratory distress and hypoglycemia.
• Early identification and management of electrolyte imbalances and thrombocytopenia are crucial in SGA infants.
• Further investigation into the etiology of persistent hypoglycemia in SGA neonates is warranted.