Early recognition of neonatal hyperbilirubinemia and its emergent management. 2006

Hannah Smitherman, and Ann R Stark, and Vinod K Bhutani
Department of Pediatrics, Section of Emergency Medicine, Baylor College of Medicine, Houston, TX, USA. hfsmithe@texaschildrenshospital.org

Hyperbilirubinemia and kernicterus are re-emerging as prominent clinical concerns and have been hypothesized to be secondary to increased breast-feeding rates, early hospital discharges and overall lack of concern for the potential impact of severe hyperbilirubinemia on healthy term newborns. Although the clinical symptoms can be non-specific and vague, they could be early, insidious and heralding signs of acute bilirubin encephalopathy (ABE) or acute stage kernicterus. Because it is highly prevalent, evaluation of a jaundiced neonate requires detailed questions about specific signs, review of birth and postnatal histories, evaluation of predischarge data, and possibly an emergency clinical evaluation of the neurological status of the infant. Medical urgency to evaluate, investigate and monitor such a newborn ensues from the possibility of rapid progression that might lead to permanent sequelae of bilirubin-induced neurologic dysfunction (BIND). Early recognition of the urgency and rapid transition to treatment seem to be the major barriers leading to delay in therapy. However, because there is a well-established and relatively safe treatment for neonatal jaundice, there should be zero tolerance for kernicterus, and BIND prevention has become a national priority in the USA. This paper reviews the clinical signs and epidemiology of ABE and BIND and presents a system-based strategy for preventing their occurrence, focusing particularly on the transition from recognition of clinical jaundice to actual treatment. A novel emergency-room-based protocol is presented as an example of how to expedite and facilitate rapid progression to treatment.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007647 Kernicterus A term used pathologically to describe BILIRUBIN staining of the BASAL GANGLIA; BRAIN STEM; and CEREBELLUM and clinically to describe a syndrome associated with HYPERBILIRUBINEMIA. Clinical features include athetosis, MUSCLE SPASTICITY or hypotonia, impaired vertical gaze, and DEAFNESS. Nonconjugated bilirubin enters the brain and acts as a neurotoxin, often in association with conditions that impair the BLOOD-BRAIN BARRIER (e.g., SEPSIS). This condition occurs primarily in neonates (INFANT, NEWBORN), but may rarely occur in adults. (Menkes, Textbook of Child Neurology, 5th ed, p613) Bilirubin Encephalopathy,Hyperbilirubinemic Encephalopathy,Encephalopathy, Bilirubin,Encephalopathy, Hyperbilirubinemic,Bilirubin Encephalopathies,Encephalopathies, Bilirubin,Encephalopathies, Hyperbilirubinemic,Hyperbilirubinemic Encephalopathies
D004632 Emergency Medical Services Services specifically designed, staffed, and equipped for the emergency care of patients. Emergency Care,Emergency Health Services,Emergicenters,Prehospital Emergency Care,Emergency Care, Prehospital,Emergency Services, Medical,Medical Services, Emergency,Services, Emergency Medical,Emergency Health Service,Emergency Medical Service,Emergency Service, Medical,Emergicenter,Health Service, Emergency,Health Services, Emergency,Medical Emergency Service,Medical Emergency Services,Medical Service, Emergency,Service, Emergency Health,Service, Emergency Medical,Service, Medical Emergency,Services, Emergency Health,Services, Medical Emergency
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001663 Bilirubin A bile pigment that is a degradation product of HEME. Bilirubin IX alpha,Bilirubin, (15E)-Isomer,Bilirubin, (4E)-Isomer,Bilirubin, (4E,15E)-Isomer,Bilirubin, Calcium Salt,Bilirubin, Disodium Salt,Bilirubin, Monosodium Salt,Calcium Bilirubinate,Hematoidin,delta-Bilirubin,Bilirubinate, Calcium,Calcium Salt Bilirubin,Disodium Salt Bilirubin,Monosodium Salt Bilirubin,Salt Bilirubin, Calcium,delta Bilirubin
D012307 Risk Factors An aspect of personal behavior or lifestyle, environmental exposure, inborn or inherited characteristic, which, based on epidemiological evidence, is known to be associated with a health-related condition considered important to prevent. Health Correlates,Risk Factor Scores,Risk Scores,Social Risk Factors,Population at Risk,Populations at Risk,Correlates, Health,Factor, Risk,Factor, Social Risk,Factors, Social Risk,Risk Factor,Risk Factor Score,Risk Factor, Social,Risk Factors, Social,Risk Score,Score, Risk,Score, Risk Factor,Social Risk Factor
D017408 Guidelines as Topic Works about a systematic statement of policy rules or principles. Guidelines may be developed by government agencies at any level, institutions, professional societies, governing boards, or by convening expert panels. For guidelines in the field of health care and clinical medicine, PRACTICE GUIDELINES AS TOPIC is available. Guidelines as Topics
D051556 Hyperbilirubinemia, Neonatal Accumulation of BILIRUBIN, a breakdown product of HEME PROTEINS, in the BLOOD during the first weeks of life. This may lead to NEONATAL JAUNDICE. The excess bilirubin may exist in the unconjugated (indirect) or the conjugated (direct) form. The condition may be self-limiting (PHYSIOLOGICAL NEONATAL JAUNDICE) or pathological with toxic levels of bilirubin. Neonatal Hyperbilirubinemia,Direct Hyperbilirubinemia, Neonatal,Hyperbilirubinemia During Infancy,Indirect Hyperbilirubinemia, Neonatal,During Infancies, Hyperbilirubinemia,Hyperbilirubinemia, Neonatal Direct,Hyperbilirubinemia, Neonatal Indirect,Infancy, Hyperbilirubinemia During,Neonatal Direct Hyperbilirubinemia,Neonatal Indirect Hyperbilirubinemia

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