Neonatal Jaundice
Key Points
- Neonatal jaundice is yellowing of the skin and sclera caused by elevated serum bilirubin (hyperbilirubinemia) — the most common condition requiring evaluation in newborns.
- Physiologic jaundice: appears after 24 hours of life; peaks day 3–5; usually resolves by about day 10–14 in term infants (may persist up to about 2–3 weeks in some newborns). Results from normal fetal RBC breakdown and immature hepatic conjugation.
- Pathologic jaundice: appears within 24 hours of birth — always requires urgent evaluation (hemolytic disease, Rh/ABO incompatibility, infection).
- Assessment: cephalocaudal progression (face → chest → abdomen → extremities/palms/soles); use transcutaneous bilirubin (TCB) monitor for screening — confirm with serum bilirubin.
- Treatment: phototherapy (bilirubin lights, eye protection, groin coverage, frequent feeding); exchange transfusion for severe hyperbilirubinemia.
- Kernicterus: bilirubin-induced brain injury from severe untreated hyperbilirubinemia — irreversible neurologic damage; prevention is the nursing priority.
Pathophysiology
Fetal red blood cells have a shorter lifespan than adult RBCs. After birth, breakdown of fetal hemoglobin releases large amounts of unconjugated (indirect) bilirubin. The neonatal liver, still immature, cannot conjugate and excrete bilirubin as rapidly as it is produced.
Unconjugated bilirubin is lipid-soluble — it crosses the blood-brain barrier and deposits in brain tissue, causing kernicterus if levels are critically elevated.
Classification
| Type | Onset | Bilirubin Peak | Cause | Action |
|---|---|---|---|---|
| Physiologic jaundice | After 24 hours of life | Day 3–5, usually resolves by day 10–14 (sometimes up to 2–3 weeks) | Normal fetal RBC breakdown + immature liver | Monitor; promote frequent feeding |
| Pathologic jaundice | Within 24 hours of birth | Rises rapidly; may exceed 20 mg/dL | Hemolytic disease (Rh/ABO incompatibility), sepsis, G6PD deficiency | Urgent evaluation; phototherapy or exchange transfusion |
| Breastfeeding jaundice | First week (days 2–5) | Bilirubin >12 mg/dL in ~13% of breastfed infants | Insufficient breast milk intake → decreased bilirubin excretion; dehydration | Increase feeding frequency (8–12/24 hr); assess latch |
| Breast milk jaundice | After day 5–7 | Peaks 5–10 mg/dL (up to 20–30 mg/dL); lasts up to 3 months | Factors in mature breast milk inhibit bilirubin conjugation | Reassure; rarely requires stopping breastfeeding |
Assessment
Cephalocaudal Progression
Jaundice progresses head to toe as bilirubin levels rise:
- Face (bilirubin ~5 mg/dL)
- Chest/abdomen (~15 mg/dL)
- Thighs and lower extremities
- Palms and soles (>20 mg/dL — critical)
NCLEX Focus
Jaundice visible on the palms and soles indicates critically elevated bilirubin — immediately obtain serum bilirubin and notify provider.
TCB and Serum Bilirubin
- TCB (transcutaneous bilirubin) monitor: Non-invasive screening tool; assesses bilirubin by skin light absorption
- Universal screening is commonly obtained between 24 and 48 hours of age before discharge; earlier testing is indicated when jaundice appears in the first 24 hours.
- During inpatient jaundice surveillance, transcutaneous trending is often repeated about every 8 to 12 hours with provider escalation for concerning trajectory.
- Effective screening method; does not replace serum bilirubin for confirmatory testing
- Less accurate in dark-skinned infants — confirm abnormal TCB with serum bilirubin
- Serum bilirubin: Gold standard; direct + indirect fractions reported
- Assess skin in natural daylight (not fluorescent lighting) for most accurate visual assessment
Assessment Priorities
- Timing of jaundice onset (before or after 24 hours of life)
- Feeding pattern: number of feeds per 24 hours, latch quality, wet diapers (6+ per day indicates adequate intake)
- Behavioral cues: lethargy, hypotonia, high-pitched cry (signs of bilirubin toxicity)
- Scleral icterus (yellowing of the whites of the eyes)
- Maternal blood type and Rh factor (Rh or ABO incompatibility risk)
- Cord-blood compatibility data (newborn blood type/Rh and Coombs testing when indicated); positive antibody testing raises severe jaundice risk.
- Pathologic-risk contributors: cephalohematoma/bruising, infection, IUGR, infant of diabetic mother, LGA status, and maternal smoking exposure.
Nursing Interventions
Phototherapy
Phototherapy is the primary treatment for neonatal hyperbilirubinemia:
- Mechanism: Blue-spectrum light converts unconjugated bilirubin in skin to water-soluble photoisomers that are excreted without conjugation
- Equipment: Bilirubin light bank, fiberoptic biliblanket (bili-blanket)
Nursing responsibilities during phototherapy:
- Place eye shields (bili-mask) over infant’s closed eyes — protect from retinal damage
- Cover the groin (protect gonads); expose maximum skin surface
- Keep infant in diaper only when feasible to maximize skin exposure; use biliblanket when ongoing therapy during feeding/holding is needed.
- Remove infant from light only for feeding and diaper changes
- Increase feedings: 8–12 feedings per 24 hours — bilirubin excreted in stool; frequent feeding reduces enterohepatic reabsorption
- Monitor serum bilirubin every 4–12 hours per protocol
- Monitor temperature — phototherapy increases insensible water loss and risk of dehydration/hyperthermia
- Assess stool pattern: phototherapy causes loose, yellow-green stools (normal)
- Turn off lights and remove eye shields during parent-infant interaction/bonding
Exchange Transfusion
For critically elevated bilirubin not responsive to phototherapy:
- Replaces infant’s blood with donor blood to rapidly reduce bilirubin levels
- Requires intensive care monitoring
- Consider urgently when severe bilirubin elevation approaches neurotoxicity range or continues rising despite intensive phototherapy.
Breastfeeding Support
- For breastfeeding jaundice: increase frequency (8–12 times/24 hours); assess latch and ensure effective milk transfer
- For breast milk jaundice: reassure parents; temporary interruption of breastfeeding rarely necessary; formula supplementation may be used briefly
- Do not routinely supplement with water — does not lower bilirubin and reduces milk supply
Complications
| Complication | Signs | Nursing Action |
|---|---|---|
| Kernicterus (bilirubin encephalopathy) | Hypotonia → hypertonia, high-pitched cry, seizures, opisthotonus (severe arching), developmental delays | Emergency — notify provider; escalate to exchange transfusion (risk rises markedly when bilirubin is above about 25 mg/dL and may cause irreversible injury above about 30 mg/dL) |
| Dehydration from phototherapy | Decreased wet diapers, sunken fontanelle, tachycardia | Increase feeding frequency; monitor fluid status |
| Retinal damage | (preventable with eye protection) | Ensure eye shields in place during phototherapy |
Kernicterus Prevention
Untreated severe hyperbilirubinemia causes irreversible brain injury (kernicterus) with permanent neurologic sequelae including cerebral palsy, hearing loss, and intellectual disability. Early identification and phototherapy initiation is the nursing priority.
Patient/Family Education
- Normal for mild yellowing to appear after the first 24 hours — observe at home
- Return immediately if: jaundice spreads to abdomen/legs/palms/soles, infant is difficult to wake, not feeding well, has high-pitched cry, or fewer than 6 wet diapers/day
- Breastfeed frequently (8–12 times/day) — helps clear bilirubin through stool
- Expose infant to indirect natural light (near a window — not direct sunlight) briefly — this is supplemental guidance, not a substitute for phototherapy
- If phototherapy at home is prescribed (bili-blanket): nurse provides instructions and follow-up bilirubin checks
- Explain that treatment thresholds are age-specific; many teams use AAP-aligned calculators (for example BiliTool) that integrate hours of age, gestational age, and bilirubin value.
Related Concepts
- phototherapy — Primary treatment for neonatal hyperbilirubinemia; nursing care during bilirubin light therapy.
- breastfeeding-support-and-lactation-education — Frequent breastfeeding is cornerstone of jaundice prevention and treatment.
- care-of-common-problems-in-the-newborn — Jaundice as one of the most common neonatal care problems.
- rh-immune-globulin — RhIgG prevents Rh sensitization; Rh incompatibility is a cause of pathologic jaundice.
- reproductive-system — Neonatal physiology underlying fetal RBC breakdown and bilirubin metabolism.
Self-Check
- A newborn at 18 hours of age is noted to have yellow skin involving the face and upper chest. Why is this concerning, and what is the priority nursing action?
- A breastfed infant has bilirubin of 14 mg/dL at day 3 of life. What feeding instructions should the nurse provide?
- During phototherapy, the parent asks to hold the infant. What is the appropriate nursing response?