Initial Approach to Managing Neonatal Jaundice

Risk Assessment and Initial Evaluation

The American Academy of Pediatrics recommends that all pregnant women should be tested for ABO and Rh(D) blood types and have a serum screen for unusual isoimmune antibodies to identify potential risk factors for neonatal jaundice 1
If maternal blood type is unknown or Rh-negative, a direct antibody test (Coombs' test), blood type, and Rh(D) type on the infant's cord blood are strongly recommended 1
Risk factors that should be assessed include gestational age, feeding method, race, and presence of hemolysis 2

Jaundice should be assessed whenever the infant's vital signs are measured but no less than every 8-12 hours 1
Visual assessment of jaundice should be performed by blanching the skin with digital pressure to reveal the underlying color of the skin 1

A TcB and/or TSB measurement should be performed on every infant who is jaundiced in the first 24 hours after birth 1
In most infants with TSB levels less than 15 mg/dL, noninvasive TcB-measurement devices can provide valid estimates of TSB levels 1
For sick infants or those with jaundice at or beyond 3 weeks of age, measurement of total and direct/conjugated bilirubin is necessary to identify cholestasis 1, 3

Phototherapy should be initiated if the total bilirubin is at or above the phototherapy threshold for age and risk category 2
The clinical impact of phototherapy should be evident within 4-6 hours with an anticipated decrease of more than 2 mg/dL in serum bilirubin concentration 4

Effective phototherapy requires maximizing exposed skin surface area and light intensity 4
Physical obstructions such as large diapers, head covers, eye masks, and electrode patches should be minimized to increase exposed surface area 4

The American Academy of Pediatrics recommends against routine supplementation of nondehydrated breastfed infants with water or dextrose water, as this will not prevent hyperbilirubinemia or decrease TSB levels 1
Continued frequent breastfeeding (8-12 times/day) is recommended if the baby is clinically well and the jaundice is mild to moderate 3

For infants with risk factors or rapidly rising bilirubin levels, recheck within 4-12 hours 2
For stable infants without risk factors, recheck within 12-24 hours 2
Infants with bilirubin levels approaching treatment thresholds should have follow-up within 24 hours 2

For jaundice that persists beyond 3 weeks, measurement of direct bilirubin is essential to rule out cholestasis 1, 3
If bilirubin rises rapidly or is not explained by history and physical examination, additional laboratory evaluation should include blood type, Coombs' test, complete blood count with smear, and direct bilirubin measurement 2

For a 5-day-old infant with elevated bilirubin receiving intensive phototherapy, the American Academy of Pediatrics recommends rechecking total serum bilirubin (TSB) every 2-3 hours if TSB ≥25 mg/dL, every 3-4 hours if TSB is 20-25 mg/dL, every 4-6 hours if TSB <20 mg/dL, and every 8-12 hours once TSB is consistently falling 5, 6
The American Academy of Pediatrics suggests obtaining type and crossmatch immediately in case exchange transfusion becomes necessary for infants with TSB ≥25 mg/dL 5, 6
For infants on intensive phototherapy with TSB 20-25 mg/dL, the American Academy of Pediatrics recommends monitoring closely for response to phototherapy and considering exchange transfusion if TSB is not decreasing or moving closer to exchange transfusion levels 5, 6
The American Academy of Pediatrics recommends measuring TSB and direct/conjugated bilirubin levels, blood type (ABO, Rh) and direct antibody test (Coombs'), complete blood count with differential and smear, reticulocyte count, and serum albumin when elevated bilirubin is first identified in a 5-day-old infant 5, 6
G6PD testing is recommended if suggested by ethnic origin or poor response to phototherapy, as G6PD deficiency can cause significant hyperbilirubinemia 5, 6

The American Academy of Pediatrics recommends immediate exchange transfusion for any infant manifesting signs of acute bilirubin encephalopathy, even if TSB is falling 5, 6
If bilirubin rises despite adequate intensive phototherapy, the American Academy of Pediatrics suggests repeating laboratory evaluation immediately to identify unrecognized hemolytic process and considering intravenous immunoglobulin 0.5-1 g/kg over 2 hours if isoimmune hemolytic disease and TSB rising despite intensive phototherapy 5, 6

The American Academy of Pediatrics recommends breastfeeding or bottle-feeding every 2-3 hours during intensive phototherapy 5, 6
If weight loss exceeds 12% or there is clinical/biochemical evidence of dehydration, the American Academy of Pediatrics suggests supplementing with formula or expressed breast milk 5, 6