Newborns at Risk for Hypoglycemia

Primary Risk Factors

Infants of mothers with diabetes are at risk for hypoglycemia, according to the American Academy of Pediatrics 1, 2
Preterm infants, defined as those born before 37 weeks' gestation, are at risk for hypoglycemia 1, 3
Small for gestational age infants, defined as those below the 10th percentile, are at risk for hypoglycemia 1, 3
Low birth weight infants, defined as those weighing less than 2500g, are at risk for hypoglycemia 1, 4
Large for gestational age infants, defined as those above the 90th percentile, are at risk for hypoglycemia 1, 3
High birth weight infants, defined as those weighing more than 4500g, are at risk for hypoglycemia 1, 4
Post-term infants, defined as those born after 42 weeks' gestation, are at risk for hypoglycemia 1, 4

Approximately 26.3% of otherwise healthy newborns are eligible for hypoglycemia screening based on risk factors, as recommended by the American Academy of Pediatrics 1, 4
Up to 50% of at-risk infants develop low blood glucose concentrations, according to the American Academy of Pediatrics 5, 3

Severe and prolonged hypoglycemia is associated with neurologic injury and long-term neurodevelopmental sequelae, as stated by the American Academy of Pediatrics 5, 3
Hypoglycemia can lead to impaired visual-motor processing, executive functioning, and reductions in literacy and numeracy skills, according to the American Academy of Pediatrics 3, 2
Hypoglycemia is often asymptomatic or presents with nonspecific clinical signs, making screening of at-risk infants crucial, as recommended by the American Academy of Pediatrics 3, 2

There is a lack of consensus between guidelines on the exact definition of at-risk infants, as noted by the American Academy of Pediatrics 1, 3
Point-of-care glucometers may be inaccurate in detecting neonatal hypoglycemia, according to the American Academy of Pediatrics 3, 6
Screening practices may disrupt establishment of breastfeeding, as stated by the American Academy of Pediatrics 3, 6
Rapid rises in glucose concentrations following treatment may be associated with poorer neurodevelopmental outcomes, according to the American Academy of Pediatrics 3, 6

Blood glucose monitoring in newborns should be determined primarily by the presence of specific risk factors, with the most common being maternal diabetes (31.5%), large for gestational age (26.2%), small for gestational age (24.5%), and prematurity (13.2%) 7, 8

Approximately 26.3% of otherwise healthy newborns meet criteria for hypoglycemia screening based on risk factors 7, 8
The proportion of infants eligible for screening has increased from 25.6% in 2004 to 28.5% in 2018, primarily due to increasing rates of maternal diabetes 8
Maternal diabetes as a risk factor for screening eligibility has increased significantly from 20.1% in 2004 to 41.7% in 2018 8
Ethnic differences exist in screening eligibility, with infants of Indian (37.8%) and Pacific (32.1%) mothers more likely to require screening compared to infants of European mothers (22.3%) 9, 10

Blood glucose measurements should preferably be performed using blood gas analyzers with glucose modules, as they provide the best combination of quick results and accuracy 11
The accuracy of handheld blood glucose meters in newborns is concerning due to interference from high hemoglobin and bilirubin levels 11