It is then advised that soon - to - be moms should stop
sleeping on the
stomach on the second trimester and instead,
sleep on her left side to
increase blood stream and provide more oxygen to the baby.
But studies in countries where there has been a switch from babies
sleeping predominantly on their
stomachs to
sleeping mainly on their backs have not found any evidence of
increased risk of choking or other problems.
Finally, while letting a baby
sleep on her
stomach may help with GERD symptoms, experts don't recommend it because it
increases your baby's risk for SIDS.
The prone or side
sleep position can
increase the risk of rebreathing expired gases, resulting in hypercapnia and hypoxia.54, — , 57 The prone position also
increases the risk of overheating by decreasing the rate of heat loss and
increasing body temperature compared with infants
sleeping supine.58, 59 Recent evidence suggests that prone
sleeping alters the autonomic control of the infant cardiovascular system during
sleep, particularly at 2 to 3 months of age, 60 and can result in decreased cerebral oxygenation.61 The prone position places infants at high risk of SIDS (odds ratio [OR]: 2.3 — 13.1).62, — , 66 However, recent studies have demonstrated that the SIDS risks associated with side and prone position are similar in magnitude (OR: 2.0 and 2.6, respectively) 63 and that the population - attributable risk reported for side
sleep position is higher than that for prone position.65, 67 Furthermore, the risk of SIDS is exceptionally high for infants who are placed on their side and found on their
stomach (OR: 8.7).63 The side
sleep position is inherently unstable, and the probability of an infant rolling to the prone position from the side
sleep position is significantly greater than rolling prone from the back.65, 68 Infants who are unaccustomed to the prone position and are placed prone for
sleep are also at greater risk than those usually placed prone (adjusted OR: 8.7 — 45.4).63, 69,70 Therefore, it is critically important that every caregiver use the supine
sleep position for every
sleep period.