Neonatal Hypoglycemia Thresholds and Management — free guideline decision tool

This tool gives age-stratified operational glucose thresholds and targets for at-risk newborns, combining AAP 2011 transitional thresholds with PES treatment targets.

Symptomatic + glucose < 2.2 mmol/L → IV glucose emergency. AAP thresholds: < 4 h < 1.4, 4–24 h < 1.9 mmol/L (feed, recheck, IV glucose if persistent). PES targets: > 2.8 first 48 h, > 3.3 after 48 h, > 3.9 if suspected congenital disorder.

Use when screening or managing glucose in at-risk newborns (preterm, SGA, LGA, infant of a diabetic mother, perinatal asphyxia) in the first days of life.

Symptomatic hypoglycemia with glucose below 2.2 mmol/L is a neurologic emergency requiring immediate IV dextrose and a search for the cause. Thresholds are operational, not a unified gold standard; management prioritizes early feeding and rechecking before escalating to IV glucose. Persistent inability to maintain targets, or hypoglycemia beyond 48 hours, prompts investigation for a congenital disorder with critical samples drawn before discharge.

For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.

Inputs: Postnatal age < 4 hours, Blood glucose 2.0 mmol/L, Hypoglycemia symptoms (tremor / irritability / apnea / seizures / lethargy / poor feeding) Asymptomatic → Result: Glucose 2 mmol/L (36 mg/dL)（Threshold/target for this window: Intervention/target: ≥ 2.2 (40) (intervention threshold < 1.4 mmol/L (25 mg/dL)); current 2 mmol/L → low, needs management, Management direction: Asymptomatic at-risk screening: feed within 1 h of birth, check 30 min after feeding; < 1.4 → feed and recheck in 1 h, still < 1.4 (or < 2.2 with symptoms) → IV glucose; target pre-feed ≥ 2.2, PES target summary: At-risk infant without congenital disease: > 2.8 (50) in the first 48 h, > 3.3 (60) after 48 h; suspected congenital hypoglycemia disorder > 3.9 (70)） Inputs: Postnatal age > 48 hours, Blood glucose 2.0 mmol/L, Hypoglycemia symptoms (tremor / irritability / apnea / seizures / lethargy / poor feeding) Symptomatic → Result: Management IV glucose (emergency)（Determination: Symptomatic hypoglycemia with glucose 2 mmol/L (36 mg/dL) < 2.2 (40) → emergency, immediate IV glucose (10% dextrose 2 mL/kg bolus then maintenance, targeting normal glucose and resolution of symptoms), Note: Neuroglycopenic symptoms (tremor/irritability/apnea/seizures/lethargy) with glucose < 2.2 mmol/L warrant IV correction and a search for the cause; recheck to confirm, Basis: AAP 2011; PES 2015）