SIDS is more likely in babies placed on their stomachs to sleep than babies sleeping on their backs. Babies also should not be placed on their sides to sleep. A baby can easily roll from a side position onto the belly during sleep. Some researchers believe that stomach sleeping may block the airway.
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.
Most SIDS deaths happen in babies between 1 month and 4 months of age, and the majority (90%) of SIDS deaths happen before a baby reaches 6 months of age. However, SIDS deaths can happen anytime during a baby's first year.
"SIDS rates are lowest among Hispanic and Asian/Pacific Islander infants." SIDS is also slightly more common in males than females.
How often does SIDS occur? SUDI and SIDS are rare and the risk of your baby dying from these is very low. The rate of SIDS deaths has declined in Australia due to safe sleeping campaigns. In 2020, 100 babies in Australia died of SUDI (data from Queensland, New South Wales, Victoria and Western Australia only).
After 6-months old, babies are typically able to lift their heads, roll over, or wake up more easily, and the risk of SIDS decreases dramatically. However, 10% of SIDS happens between 6 and 12 months of age and safe sleep recommendations should be followed up to a baby first birthday.
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.
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).
The way parents put their children to sleep is learned behavior, passed down from their parents or cultures. Asian families are no different — and their cultural behavior could account for why Asian babies are the least likely to die of SIDS.
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.
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).
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.
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.
During wintry months, you may be tempted to wrap your baby in extra blankets and warm clothes before sleep. But take care. Over-bundling may cause infants to overheat, increasing their risk for sudden infant death syndrome (SIDS)—the third leading cause of infant death.
The lowest SIDS rates among these countries were in the Netherlands and Japan. It is important to note that the age of inclusion for SIDS varies from country to country, with some countries defining SIDS as occurring from age 1 week to age 1 year, while others use a range from birth to age 1 year or another range.
Because of the risks involved, the American Academy of Pediatrics (AAP) and the U.S. Consumer Product Safety Commission (CPSC) warn against bed-sharing. The AAP does recommend the practice of room-sharing without bed-sharing. Sleeping in the parents' room but on a separate surface lowers a baby's risk of SIDS.
However, it's equally possible the figure could be lower; a 2011 study in the UK found a lower rate of sudden infant deaths among Indian, Pakistani and Bangladeshi families than in White British families, likely because SIDS-preventative sleeping practices and infant care were more culturally endemic among South Asians ...
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).
The single most effective action that parents and caregivers can take to lower a baby's risk of SIDS is to place the baby to sleep on his or her back for naps and at night. Compared with back sleeping, stomach sleeping increases the risk of SIDS by 1.7 - 12.9.
The Moro reflex is the cause of your newborn baby to sleep with his arms above his head. This reflex, commonly referred to as the “startle reflex”, disappears by 6 months of age.
Overheating is linked to SIDS, so it's important that you don't bundle your baby too tightly in the winter. Try to keep their room cool in the months when the temperature outside is higher than 70 degrees Fahrenheit. There's some evidence that suggests that high environmental temperatures are also linked to SIDS.
The safest sleep position is on the back. Babies who sleep on their backs are at lower risk for SIDS than babies who sleep on their stomachs or sides. If baby usually sleeps on their back, putting them on the stomach or side to sleep for a nap or at night,increases the risk for SIDS by up to 45 times.
Babies can become wedged between a parent's body and the back of a couch or the arm of a chair and the weight of the adult's body can prevent them from breathing. Sleeping with your baby on a sofa also puts your baby at a greatly increased risk of Sudden Infant Death Syndrome.