Exposure to cigarette smoke can significantly increase your baby's risk of dying suddenly and unexpectedly. This applies to smoking both during pregnancy and after they are born. The risks of SUDI are also higher if your baby sleeps with a parent who is a smoker. Your doctor can support you to quit smoking.
While the cause of SIDS is unknown, many clinicians and researchers believe that SIDS is associated with problems in the ability of the baby to arouse from sleep, to detect low levels of oxygen, or a buildup of carbon dioxide in the blood. When babies sleep face down, they may re-breathe exhaled carbon dioxide.
Infants (children under 1 year) had the highest rate of death in all jurisdictions in 2020, accounting for 59% of all child deaths in Australia. Rates of infant deaths from Sudden Infant Death Syndrome (SIDS) and undetermined causes ranged between 0.16 and 0.52 per 1,000 live births.
Experts have had little idea what causes SIDS. A new study released by Australian researchers, however, may change that, by linking an enzyme called butyrylcholinesterase (BChE) to SIDS. According to the study, children who have died due to SIDS appear to have lower levels of BChE.
The rate of SIDS deaths per 100,000 live births has declined in Australia since the beginning of national public education campaigns about risk factors associated with SIDS in 1991 (AIHW 2012). Between 2007 and 2017 the rate declined from 28 per 100,000 to 6 in 2017, following a peak in 2009 of 32 per 100,000.
Sleep position:
Babies placed to sleep on their stomachs or sides are at higher risk for SIDS. Babies who are used to sleeping on their backs but who are placed on their stomachs or sides for sleep, like for a nap, are at very high risk of SIDS.
SIDS has no symptoms or warning signs. Babies who die of SIDS seem healthy before being put to bed. They show no signs of struggle and are often found in the same position as when they were placed in the bed.
Breastfeeding has been shown to reduce the occurrence of SIDS by over 50 percent by improving the immune system, promoting brain growth, reducing reflux and a variety of other factors.
The highest SIDS rates in 1990 (>2.0/1000 live births) were in Ireland, New Zealand, and Scotland. More recently, the highest SIDS rates (>0.5/1000 live births) are in New Zealand and the United States.
SIDS is most common at 2-4 months of age when the cardiorespiratory system of all infants is in rapid transition and therefore unstable. So, all infants in this age range are at risk for dysfunction of neurological control of breathing.
It may be because babies don't sleep as deeply when they have a pacifier, which helps wake them up if they're having trouble breathing. A pacifier also keeps the tongue forward in the mouth, so it can't block the airway.
Even though the thought can be deeply unsettling, experts agree that there aren't any warning signs for SIDS. And since SIDS isn't diagnosed until after an infant has died and the death has been investigated, you can't catch SIDS while it's happening and stop it, for instance, by performing CPR.
SIDS is less common after 8 months of age, but parents and caregivers should continue to follow safe sleep practices to reduce the risk of SIDS and other sleep-related causes of infant death until baby's first birthday. More than 90% of all SIDS deaths occur before 6 months of age.
White noise reduces the risk of SIDS.
We DO know that white noise reduces active sleep (which is the sleep state where SIDS is most likely to occur).
Infants at the age when SIDS occurs quite frequently spend most of their sleep in a stage known as rapid eye movement or REM sleep. This sleep stage is characterized by the dysregulation of various mechanosensory airway and chemosensory autonomous reflexes that are critical for survival (18, 19).
Age also plays an important role in SIDS and sleep-related deaths. SIDS peaks between 1 and 4 months of age, and 90% of the cases take place in the first 6 months of life.
Year after the year, Japan is one of the countries with one of the lowest infant mortality rates. There are a few reasons why this may be: They have lower rates of maternal smoking and alcohol consumption — and research has shown that both maternal smoking and prenatal drinking increase a child's SIDS risk.
Sweden. Sweden has a very low SIDS rate (0.14 per 1,000 live births in 2015) (Figure 20.1). In cases of sudden unexpected infant death, a thorough autopsy including both a comprehensive histological examination of all organs and a neuropathological examination is performed.
Today in the U.S., more than 2,000 babies die of SIDS every year, according to government figures. But the mystery surrounding SIDS is not what it once was. Many SIDS deaths are now believed to be accidents caused by unsafe sleep practices.
According to research, the longer you exclusively breastfeed your baby (meaning not supplementing with formula or solid food), the lower his or her risk of SIDS.
It is estimated that around half of SIDS deaths occur whilst co-sleeping, and that most of these are in high risk situations. We do not know the cause of SIDS and why these deaths happen but we do know what some of the risk factors are and that removing those risks greatly lowers the chance of SIDS occurring.
Dr. Hauck: We don't know for sure why room-sharing without bed-sharing is protective, but we have some theories. One is that the babies are sleeping more lightly because there is more movement around them (so they cannot get into as deep a sleep, which can contribute to the final pathway in SIDS).
In most cases of sleep-related infant death, it is impossible to make a definitive classification of SIDS vs. accidental suffocation. Autopsy findings are similar and death scenes often reveal possible asphyxiating conditions, such as prone sleep or co-bedding, without clear evidence of airway obstruction.