Study Identifies that Multiple Risk Factors Existed in 78 Percent of Sudden Infant Death Syndrome Cases

Released: 2/15/2010 2:20 PM EST
Source Newsroom: Rutgers Robert Wood Johnson Medical School
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Citations Pediatrics (February 15, 2010)

Newswise — Sudden Infant Death Syndrome (SIDS) continues to be the third leading cause of infant death, according to the Centers for Disease Control (CDC), despite a decline in SIDS that is associated with a rise in safe-sleep practices for newborns and infants. A new study by Barbara M. Ostfeld, PhD and Thomas Hegyi, MD, professors in the Department of Pediatrics at UMDNJ-Robert Wood Johnson Medical School, has identified that more than 96 percent of infants who died of SIDS were exposed to known risk factors, among them sleeping on their side or stomach, or exposure to tobacco smoke, and that 78 percent of SIDS cases contained multiple risk factors. The study, “Concurrent Risks in Sudden Infant Death Syndrome,” was published online today by Pediatrics and will appear in the journal’s March print issue. The study provides evidence that despite a decline in SIDS, a continuing effort should be made by health care providers to educate parents and other caregivers and to do so with attention to all identified risk factors, as recommended by the American Academy of Pediatrics (AAP).

In 2005, according to the CDC, 2,234 infants died of SIDS in the United States. Forty-four of those deaths occurred in New Jersey. The study notes that the incidence of SIDS has declined by more than 50 percent since the onset of public health initiatives during the 1990s, most notably the AAP’s “Back-to-Sleep” campaign, to raise awareness of infant care practices that elevate the risk of SIDS. However, the study indicates that risk-reduction education needs to be more comprehensive.

“It is important that health care providers communicate all of the risk factors of SIDS ideally during the prenatal period as well as at birth and throughout the first year of an infant’s life,” said Dr. Ostfeld, who also is program director of the SIDS Center of New Jersey.

“Risk-reduction education of new parents and all other caregivers, such as grandparents and babysitters should be detailed,” said Dr. Hegyi, who also serves as the medical director of the SIDS Center of New Jersey. “Parent’s questions and concerns should be addressed thoroughly.”

The authors note that guidance to parents regarding safe sleep practices should address the importance of “Back-to-Sleep,” the position associated with the lowest risk, but also should cover all other practices that have been identified as lowering the risk of SIDS according to the guidelines of the American Academy of Pediatrics. These include, but are not limited to, avoidance of exposure to tobacco smoke, elimination of the use of pillows, quilts and soft or loose bedding in the infant’s sleep environment, avoidance of any face covering, and avoidance of the use of a shared sleep surface during sleep. The complete guidelines of risk reduction practices recommended by the American Academy of Pediatrics can be found on the SIDS Center of New Jersey website: www.umdnj.edu/sids. The site also contains a link to the publication by the American Academy of Pediatrics Task Force on Sudden Infant Death Syndrome, with additional details on risk reduction.

SIDS is defined as a sudden and unexpected death of an infant before the first birthday that remains unexplained even after a comprehensive evaluation consisting of a complete autopsy, a death scene investigation and a review of medical history of the infant and the family. Many studies now suggest that one of the potential causes may be an abnormality in the brainstem that would prevent an infant from responding to breathing challenges, such as those posed by prone (on the stomach) sleep in soft bedding. However, until the biological bases for SIDS are fully defined and can lead to the identification and treatment of living infants who may be vulnerable, risk-reducing practices, often defined as safe sleep practices, remain the most effective intervention to date.

The SIDS Center of New Jersey (SCNJ) was established in 1988 and operates under a grant to UMDNJ-Robert Wood Johnson Medical School from the New Jersey Department of Health and Senior Services. An additional site based at The Joseph M. Sanzari Children’s Hospital at Hackensack University Medical Center receives funding from the CJ Foundation for SIDS. The program provides families with bereavement support and information about sudden infant death, educates the health care community about methods for reducing the risk for SIDS, and monitors the epidemiology of SIDS in New Jersey. Since the onset of the program, the rate of SIDS in New Jersey has declined by more than half and remains below the national rate. Compliance with risk reducing infant care practices has also improved.

The study can be found online at: http://pediatrics.aappublications.org/cgi/content/abstract/peds.2009-0038v1. (Subscription may be needed.)

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