Study note
PediatricsNewborn Care

Neonatal hypoglycemia: screening, prevention, and treatment

THE CONTEXT
Management depends on symptoms, the initial glucose concentration, and the glucose response to feeding or intravenous therapy.

Screening and recognition

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Appropriate-for-gestational-age neonates breastfeeding adequately do not require screening for hypoglycemia.
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The screening schedule given is 2, 6, 12, 24, 48, and 72 hours after birth using reagent strips.
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A glucose value below 45 mg/dL warrants treatment and laboratory confirmation because reagent strips have high false-positive rates.
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Hypoglycemia may be asymptomatic. Listed manifestations include stupor, tremors, apathy, cyanosis, convulsions, apnea, tachypnea, weak or high-pitched cry, lethargy, feeding difficulty, eye-rolling, sweating, sudden pallor, hypothermia, and rarely cardiac arrest.

Prevention

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Ensure adequate breastfeeding and provide breastfeeding counseling and support to all high-risk neonates.
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Small neonates unable to breastfeed effectively should receive expressed breast milk through alternate feeding methods.

Asymptomatic neonates

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If initial glucose is above 20 mg/dL, give a trial of oral feeds and repeat glucose testing after 30–45 minutes.
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If repeat glucose is above 40 mg/dL, ensure frequent feeding and monitor glucose every six hours for 48 hours.
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If glucose persists below 40 mg/dL, give intravenous glucose. An initial value below 20 mg/dL also requires intravenous glucose infusion.

Symptomatic neonates and infusion adjustment

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Give 2 mL/kg of 10% dextrose as a bolus, immediately followed by glucose infusion at 6 mg/kg/min.
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Check glucose after 30–45 minutes and then at six hours.
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For recurrent hypoglycemia, increase the glucose infusion rate by 2 mg/kg/min increments, up to 12 mg/kg/min.
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After 24 hours of parenteral therapy, the infusion may be tapered if two or more consecutive glucose values exceed 50 mg/dL.
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Reduce the infusion by 2 mg/kg/min every six hours with glucose monitoring, accompanied by a concomitant increase in oral feeds.
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