Guidelines for management of Neonatal Jaundice 50% of newborn, 80% of preterm babies will develop jaundice. It can be abnormal or normal. Jaundice is caused by excess production of bilirubin from red cell breakdown in the newborn. This is converted to conjugated bilirubin (water-soluble), which can be excreted in the urine, however the rate of production exceeds the conversion rate because the neonatals’ liver is immature. This unconjugated (unconverted) bilirubin (fat soluble) is what is deposited in the skin and visible as yellow. Fat-soluble bilirubin easily crosses the blood brain barrier and can be damaging to the brain if not identified and treated early. Most jaundice is normal and causes no harm but abnormal jaundice should be treated promptly to avoid complications such as severe anaemia, kernicterus (bilirubin neurotoxicity) and liver cirrhosis in cases of prolonged jaundice (>14 days). Abnormal Jaundice Jaundice within the first 24 hours Jaundice with fever Deep Jaundice affecting sole of the feet and palms Jaundice after 14 days of life in a term baby or after 21 days of life in premature babies (see page 6) Causes Onset less than 24 hours o Always pathological o Usually due to haemolysis: Rhesus or ABO incompatibility o Exclude sepsis o Rarer causes may include: G6PD Onset 24 hours to 14 days Sepsis Haemolysis Polycythemia Cephalhaematoma Central nervous system haemorrhage Poor feeding Bruising or fractures. Increased enterohepatic circulation, which may be due to gut obstruction. Physiological jaundice Breastfeeding jaundice: early breastfeeding jaundice. Develops within 2 to 4 days of birth and is most likely related to infrequent breastfeeding with a limited fluid intake. Onset greater than 14 days (>21 days in preterm) see page 6 Dr. Yetunde Odutolu (Paediatrician) 1 Conjugated Hyperbilirubinaemia due to: o Congenital malformations (biliary atresia). o Idiopathic neonatal hepatitis or infections (Hepatitis B, TORCH infections) Sepsis Hypothyroidism Haemolysis Breast milk jaundice: late breast milk jaundice is much less common and develops 4 to 7 days after birth with a peak at 7 to 15 days of age Investigations All newborns should be monitored for the development of jaundice, which should be confirmed by a bilirubin measurement, when possible, in all: Especially in infants with jaundice on day 1 Preterm infants (< 35 weeks) if jaundice appears on day 2 Infants if palms and soles are yellow at any age. Jaundice after 14 days in a term newborn or more than 21 days in preterm The investigations depend on the probable diagnosis and what tests are available but may include: Haemoglobin estimate or packed cell volume Full blood count to identify signs of serious bacterial infection (high or low neutrophil count with > 20% band forms) and signs of haemolysis Blood type of infant and mother and Coombs test Syphilis serology, such as venereal disease research laboratory tests Glucose 6-phosphate dehydrogenase screening, thyroid function tests, liver ultrasound Especially Bilirubin levels- the cut off value depends on the age of the baby, the weight and the gestation ( > or < than 35weeks). See chart below. Identifying Jaundice In the absence of investigations, a rough guide is the Kramer’s cephalocaudal (head to toe) progression of jaundice rules. Always assess jaundice in a well-lit room or in daylight at a window by blanching the baby’s skin with a finger and observing the underlying skin colour. Jaundice appears first in the face and progresses caudally to the trunk and extremities Although the use of this rule is limited in dark skin babies it is a rough guide and evaluation of the mucosa areas is a good guide in dark skin babies. Always examine the sclera, sole of the feet and palms. Dr. Yetunde Odutolu (Paediatrician) 2 Zones Definition 1 Head and Neck 2 Upper trunk 3 Lower trunk and thigh Bilirubin estimate in mol/l Bilirubin estimate in Mg/dl 100 150 5-7 8-10 Dr. Yetunde Odutolu (Paediatrician) 3 5 Deep yellow, Palms and soles 200 4 Arms and Lower legs Deep yellow 250 12-15 15 > 15 >250 Treatment In the absence of bilirubin levels use the estimate above. Start phototherapy if Any visible jaundice on day 1 Deep Jaundice affecting the sole of the feet and the palms Prematurity and jaundice Jaundice due to haemolysis – known incompatibilities Always remember to treat other causes such as sepsis, congenital syphilis and ensure adequate hydration. Start phototherapy using the table below to identify babies requiring phototherapy. Continue until baby is well and there is no longer any jaundice of the sclera, palms and soles. Transfer the high-risk groups to Mulago for exchange transfusion if needed To use the table, ascertain the gestation and weight of the baby as well as how old they are. Using the laboratory result see if the values are above the Phototherapy Exchange transfusion Age Health baby Unwell or Health baby Unwell or ≥35wks Preterm ≤ 35 ≥35wks Preterm ≤ wks or ≤ 35wks or ≤ 2.5kg 2.5kg Day 1 Any visible Jaundice >250mol/l 200mol/l 15mg/dl 10mg/dl Zone 5 Zone 3 Day 2 >250mol/l 15mg/dl Zone 5 170mol/l 10mg/dl >Zone 2 Day ≥3 310mol/l 20mg/dl Zone 5 >250mol/l 15mg/dl Zone 5 425mol/l 25mg/dl > Zone 5(severe) 425mol/l 25mg/dl > Zone 5 (severe) >250mol/l 15mg/dl Zone 5 310mol/l 20mg/dl Zone 5 phototherapy threshold and treat accordingly. If no values are available, use the Kramer estimate diagram to determine what zones are affected and if the zones meet the threshold for treatment. Care during phototherapy. Sepsis Unwell babies or babies with signs of sepsis must be commenced on antibiotics (using the neonatal sepsis guidelines) Temperature Monitor temperature every 3 hours to avoid getting baby cold or too warm. Dr. Yetunde Odutolu (Paediatrician) 4 Feeding Whilst on phototherapy give babies an extra 10ml/kg of fluids to avoid dehydration. Encourage all mothers to breastfeed their babies 8 - 12 times a day in the first 2 - 3 days of life. IV fluids should be used in the red feeding regime or on day one of the yellow feeding regime (see feeding regimen) NG fed babies should be feed 2 hourly Weigh daily and monitor that the baby is passing urine. Clothing during phototherapy Remove all clothing except nappy. No lotions/lubricants on skin. Eye patches Must be worn during phototherapy to avoid retina damage. Stopping Phototherapy When baby is well and there is no longer any jaundice of the sclera, palms and soles. Identifying and Preventing Kernicterus Sunlight Phototherapy When phototherapy is unavailable, sunlight has been found to be effective in treating jaundice. When using sunlight, undress the baby except for the nappy. Keep the baby in a room that has a lot of sunlight. Do not place the baby directly in the sun, preferably always through the window. Since the baby is uncovered, monitor temperature. If the baby becomes cold re-warm the baby by performing Kangaroo mother care. Once the baby becomes warm, wait 1-2 hours, undress the baby and try again. Kernicterus is a complication of neonatal jaundice. The word kern-icterus means yellow kern, kern being the structures of the brain that are most commonly affected. Affecting the basal ganglia mostly as well as other parts such as cochlear, vestibular and other cranial nerves nuclei. The following are at risk of bilirubin neurotoxicity, Preterm infants small for gestational age Sepsis Asphyxia Hypoalbuminaemia and Jaundice < 24 hours of age Early features within the first few days include severe jaundice, hypotonia, poor sucking and feeding, and absent startle reflex. The affected baby may then develop a high-pitched cry, hypertonia of extensor muscles with arched back and hyperextended neck, bulging Dr. Yetunde Odutolu (Paediatrician) 5 fontanelle and seizures. Later neurological features include sensory hearing loss, intellectual disability, muscle rigidity, speech difficulties, seizures and movement disorder. Babies who are thought to have neurological damage should be referred early for paediatric follow up neurodevelopmental assessment and remedial help. Management of kernicterus will include management of neurological complications, including seizures and sensory nerve deafness. Prolonged Jaundice Babies with prolonged jaundice (obvious persisting clinical jaundice at greater than 2 weeks in term babies and greater than 3 weeks in preterm babies) require: • • Clinical review including examination/enquiry regarding stool colour Total serum bilirubin and conjugated bilirubin level: conjugated hyperbilirubinaemia or a jaundiced baby with pale stools and dark urine requires urgent discussion with a senior paediatrician immediately • Thyroid function tests (TFT) • FBC to check for anaemia or signs of haemolysis • Total serum bilirubin and conjugated bilirubin levels • LFT (including: AST, ALT, GGT, ALP and albumin) • Coagulation screen • Blood group and DAT/Coombs test • Liver ultrasound • Urine: CMV congenital infection serology o micro culture and sensitivity It is important to identify persistent pale stools and dark urine (conjugated Hyperbilirubinaemia) urgently as these patients might require urgent surgery. Reference 1. The Pocket book of Hospital Care for Children: Guideline for the management of common childhood illnesses. Second edition 2013 2. Clinical assessments of neonatal jaundice in developing countries- a multicenter study. The young infants clinical sign study group. Abstract 333. 3. Neonatal Jaundice: Prevention, Assessment and Management. Queensland Maternal and Neonatal Clinical guidelines 2009 4. http://www.kairos2.com/18_Neonatal%20jaundice.pdf Dr. Yetunde Odutolu (Paediatrician) 6