![]() ![]() The MiNESS study did not find a difference in risk between sleeping on the right or left side. returning to sleep after any night wakeningsĪs the going-to-sleep position is the one held longest during the night, women should not be concerned if they wake up on their back, but should simply roll back onto their side.The advice to pregnant women is to go to sleep on their side for any episode of sleep in the third trimester, including: Other possible explanations include disturbed breathing during sleep, which is worse when a woman sleeps on her back and in overweight or obese women, who also have an increased risk of stillbirth. ![]() In the third trimester, when the woman is lying on her back, the combined weight of baby and uterus (womb) puts pressure on the main blood vessels that supply the uterus, and this can restrict blood flow/oxygen to the baby. ![]() It confirms findings from earlier studies in New Zealand and Australia that, in the third trimester (after 28 weeks of pregnancy), pregnant women who go to sleep on their back are more likely to have a stillbirth.Īlthough researchers cannot say for certain why the risk is increased, there are several theories. It looked into 291 pregnancies that ended in stillbirth and 735 women who had a live birth. Led by Professor Alexander Heazell, Clinical Director at the Tommy’s Stillbirth Research Centre at Saint Mary’s Hospital, Manchester, MiNESS is the largest study to examine maternal sleep and late stillbirth. ![]()
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