Sudden infant death syndrome (SIDS) – sometimes known as "cot death" – is the sudden, unexpected and unexplained death of an apparently healthy baby. In the UK, around 200 babies die suddenly and unexpectedly every year.
Ninety percent of SIDS deaths occur within the first 6 months of life, with the rate peaking between 1 to 4 months. Death comes suddenly and unpredictably, usually during sleep. In most cases, the baby seems healthy before death.
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.
SIDS is sometimes known as crib death because the infants often die in their cribs. Although the cause is unknown, it appears that SIDS might be associated with defects in the portion of an infant's brain that controls breathing and arousal from sleep.
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).
In contrast, the increased risk of SIDS associated with excess thermal insulation and bed sharing was less in winter than in summer. Prone sleeping position accounts for about half of the difference between the mortality rate in summer and that in winter.
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).
What is SIDS? Sudden infant death syndrome (SIDS) is the sudden and unexplained death of an infant (younger than 1 year old). SIDS is the leading cause of death among infants ages 1 month to 1 year old, and claims the lives of about 2,500 babies each year in the United States.
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.
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.
SIDS is not the same as suffocation and is not caused by suffocation. SIDS is not caused by vaccines, immunizations, or shots.
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. The lowest rates (<0.2/1000) are in Japan and the Netherlands.
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.
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.
It is important to make sure that your baby is a comfortable temperature – not too hot or too cold. The chance of SIDS is higher in babies who get too hot. A room temperature of 16-20°C – with light bedding or a lightweight, well-fitting baby sleep bag– is comfortable and safe for sleeping babies.
SIDS usually occurs when a baby is asleep, although it can occasionally happen while they're awake. Parents can reduce the risk of SIDS by not smoking while pregnant or after the baby is born, and always placing the baby on their back when they sleep.
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.
Most instances of SIDS occur when an infant is asleep or in their sleep area, between the hours of midnight and 6 a.m.
Most of the risk factors of SIDS are common in developing countries, and postneonatal mortality rates (a subset of infant mortality rate) remaining high in these countries has a proven association with SIDS. Yet, there has been little interest in SIDS by researchers in Africa.
Babies need tummy time! Although it does not directly reduce the risk of Sudden Infant Death Syndrome (SIDS), tummy time is an important way to help baby grow and develop.
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).
As a rule of thumb, babies should not be exposed to noise levels over 60 decibels. The noise level recommended for hospital nurseries is actually lower, at 50 dB. For reference, a quiet conversation is between 50 and 55 dB and an alarm clock is 80 dB.
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.