Screening all newborns for excessive bilirubin in the blood can significantly decrease the incidence of severe jaundice which, in extreme cases, can lead to seizures and brain damage, according to researchers at UCSF Children's Hospital and Kaiser Permanente's Division of Research in Oakland, CA.
The study, one of the first to examine the effectiveness of universal screening for hyperbilirubinemia, appears in the current issue of "Pediatrics," the official journal of the American Academy of Pediatrics. The study is one of six in this issue to explore the topic of bilirubin and hyperbilirubinemia.
Hyperbilirubinemia is caused by an elevation of a bile pigment, called bilirubin, in the blood. Bilirubin is made when the body breaks down old red blood cells, and high levels can cause jaundice, a condition that makes the newborn's skin and the white part of the eyes look yellow.
The researchers explain that most newborns have a rise in bilirubin in the days following birth. However, very high blood levels can be toxic to the nervous system. Monitoring these levels in babies with jaundice is important so that treatment can be started before levels become excessive, explain the researchers. They add that high bilirubin levels can be treated with light therapy, which converts the bilirubin into a form that the body can remove.
"While we know that early identification of bilirubin levels before reaching toxic levels is important, bilirubin screening has not been universal, as physicians have decided which infants to screen based upon their degree of jaundice and clinical risk factors," said Michael Kuzniewicz, MD, MPH, the lead author of the study and a neonatologist at UCSF Children's Hospital. "This study provides evidence that universal screening during the birth hospitalization is a more effective method for monitoring bilirubin levels in order to prevent them from rising to a point that can damage an infant's brain."
The study evaluated the impact of implementation of the 2004 American Academy of Pediatrics (AAP) guideline on the management of jaundice in the Northern California facilities operated by Kaiser Permanente. The guideline recommends that every newborn be assessed for the risk of developing severe jaundice with a bilirubin level before discharge home and/or an assessment of clinical risk factors.
With universal screening, researchers noted a 62 percent decrease in the number of newborns with very high bilirubin levels. The study also describes an increase in the use of phototherapy to treat infants with elevated bilirubin levels, sometimes even when the AAP guidelines did not call for it.
Researchers in this study evaluated both blood tests and devices that estimate the bilirubin level from the color of the baby's skin as methods of screening. "The method didn't seem to matter as much as changing the standard operating procedure, such that all babies are screened," said study co-author Gabriel Escobar, MD, regional director for hospital operations research and a research scientist with the Kaiser Permanente Division of Research's Perinatal Research Unit in Oakland, CA. "With additional education to help avoid excessive use of phototherapy, we think universal screening is a very good tool to reduce cases of serious hyperbilirubinemia."
"This research highlights the power of laboratory databases in supporting research and quality improvement," according to senior author Thomas B. Newman, MD, MPH, with the UCSF Department of Epidemiology and Biostatistics and the UCSF Division of General Pediatrics.
The study was funded by a grant from the National Institute of Child Health and Human Development.
One of the nation's top children's hospitals, UCSF Children's Hospital creates an environment where children and their families find compassionate care at the healing edge of scientific discovery, with more than 150 experts in 50 medical specialties serving patients throughout Northern California and beyond. The hospital admits about 5,000 children each year, including 2,000 babies born in the hospital. More information is available at http://www.ucsfhealth.org/childrens/.
UCSF is a leading university dedicated to promoting health worldwide through advanced biomedical research, graduate-level education in the life sciences and health professions, and excellence in patient care. For more information, go to http://www.ucsf.edu.
The Kaiser Permanente Division of Research conducts, publishes, and disseminates epidemiologic and health services research to improve the health and medical care of Kaiser Permanente members and the society at large. It seeks to understand the determinants of illness and well-being and to improve the quality and cost-effectiveness of health care.
Currently, DOR's 400-plus staff is working on more than 250 epidemiological and health services research projects. More information is available at http://www.dor.kaiser.org.
Kaiser Permanente is committed to helping shape the future of health care. It is recognized as one of America's leading health care providers and not-for-profit health plans.
Founded in 1945, its mission is to provide high-quality, affordable health care services to improve the health of our members and the communities it serves. The organization currently serves 8.6 million members in nine states and the District of Columbia.
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