Infants accustomed to sleeping on their backs who are then placed to sleep on their stomachs or sides are at an increased risk for SIDS-greater than the increased SIDS risk of infants always placed on their stomachs or sides. The study, conducted by Kaiser Permanente in Northern and Southern California and supported by the National Institute of Child Health and Human Development (NICHD) and the National Institute on Deafness and Other Communications Disorders (NIDCD), appears in the current issue of the American Journal of Epidemiology.
The study also shows that infants sleeping on their sides are at an increased risk of SIDS. The researchers think that a large part of the risk may be due to the instability of the side sleeping position and the tendency for infants sleeping in this position to turn onto their stomachs.
The study, which was conducted in 11 counties in Northern and Southern California, is the first to examine the relationship between infant sleeping position and SIDS in a racially diverse U.S. population. The incidence of SIDS has declined over 50 percent since 1992, when the American Academy of Pediatrics recommended that infants be placed on their backs to sleep. Before the current study, evidence of the link between stomach sleeping and SIDS risk was based largely on overseas studies, where populations and cultural practices are different from those in the United States.
The researchers also collected information about bedding materials, type of mattress, room- or bed-sharing, room temperature, exposure to passive smoking, and infant sickness.
The researchers found that infants last placed on their sides for sleep were twice more likely to die of SIDS than infants last placed on their backs. In addition, the risk of SIDS was significantly increased if infants turned from their sides to their stomachs during sleep. While the reason isnt clear, the researchers think that the instability of the side position makes it more likely for babies who are placed to sleep in this position to roll over onto their stomachs.
A pattern also emerged when the researchers looked specifically at the position in which an infant was last placed to sleep, compared to their usual sleeping position. If an infant who was usually placed to sleep in the low-risk position-- on the back--was then placed to sleep in a high-risk position (the stomach or side), his or her SIDS risk was seven to eight times greater than that of an infant who was always placed to sleep on his or her back.
"The message here is every night and nap time count," said study co-author Dr. Marian Willinger of NICHD. "Parents and caregivers should place their babies on their backs every time they go to sleep. Consistency is the key."
One of the strengths of this study is that the researchers interviewed a racially- and culturally diverse group of mothers-White, African American, Hispanic, and Asian/Pacific Islander, although the small sample size limited the researchers ability to examine risk within each racial group. This study provides results from the first study of infant sleeping position in relation to SIDS risk to be collected entirely after the NICHDs "Back to Sleep" campaign was launched to inform the public about the importance of sleep position in preventing SIDS.
The NICHD and the NIDCD are part of the National Institutes of Health (NIH), the biomedical research arm of the federal government. NIH is part of the U.S. Department of Health and Human Services. The NICHD sponsors research on development, before and after birth; maternal, child, and family health; reproductive biology and population issues; and medical rehabilitation. NICHD publications, as well as information about the Institute, are available from the NICHD Web site, http://www.nichd.nih.gov, or from the NICHD Clearinghouse, 1-800-370-2943; e-mail NICHDClearinghouse@mail.nih.gov. The NIDCD supports and conducts research and research training on the normal and disordered processes of hearing, balance, smell, taste, voice, speech and language and provides health information, based upon scientific discovery, to the public. For more information about NIDCD programs: www.nidcd.nih.gov.
Marianne Glass Duffy | EurekAlert!
Finnish research group discovers a new immune system regulator
23.02.2018 | University of Turku
Minimising risks of transplants
22.02.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy