Cutting the umbilical cord immediately after birth–currently standard practice–puts the baby at risk of iron deficiency, experts say.
Official guidelines are currently being examined–and professionals and campaigners say they should change.
Leaving the cord attached for a few minutes allows the blood in the cord to transfer to the baby,
The National Institute for Health and Care Excellence (NICE) says it will publish new guidelines next year.
The existing guidance on cord-clamping was published in 2007, when the consensus was that cutting the cord immediately was the best option–something which had been the case for decades.
But since then, researchers have questioned whether that is still the case.
A paper from the Royal College of Obstetricians and Gynaecologists (RCOG) published in 2009, stated that babies whose umbilical cords are clamped immediately have lower iron stores for up to six months.
Low iron levels have been linked to brain development problems.
The suggestion is that the cord should not be cut until it has stopped pulsating naturally–anywhere between two and five minutes after birth.
Some hospitals have already changed their practice.
Commenting on the current re-evaluation of the guidance, an RCOG spokesman said: "The college recommends that the umbilical cord should not be clamped earlier than necessary and should always be based on clinical assessment of the situation.
"Research has shown that delayed cord clamping of more than 30 seconds may benefit the newborn in reducing anaemia.
"It also allows time for the transfusion of placental blood to the newborn, especially in cases of premature birth."
But she said there could be some cases where complications meant it was better to clamp the cord immediately.
Belinda Phipps, chief executive of the National Childbirth Trust (NCT) said: "When a baby is born about a third for the baby's blood is still in his/her cord and placenta.
"The NCT would like to see the default position become leaving the cord for a few minutes until it stops pulsating, unless the mother chooses to have an injection to speed the arrival of her placenta or unless the blood loss from the mother means her uterus must be encouraged, with drugs, to contract and expel the placenta quickly."
(BBC)
Folds in placenta linked to autism
A relatively high number of abnormal folds and cell growths in the placenta could be a strong indicator of an infant's risk for developing autism, according to new research at the Yale School of Medicine.
The research team examined 117 placentas from infants of at-risk families–those with one or more previous children with autism. These families were participating in a study called Markers of Autism Risk in Babies–Learning Early Signs. Then the researchers compared these at-risk placentas to 100 control placentas.
The at-risk placentas had as many as 15 trophoblast inclusions, while none of the control placentas had more than two trophoblast inclusions.
According to the researchers, a placenta with four or more trophoblast inclusions conservatively predicted a 96.7 per cent probability of the infant being at risk for autism.
Currently, one out of 50 children are diagnosed with an autism spectrum disorder in the United States each year, according to the Centers for Disease Control and Prevention (CDC).
However, this diagnosis is typically made when these children are three to four years of age or older. By then the best opportunities for intervention have been lost because the brain is most responsive to treatment in the first year of life. (psychcentral.com)
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Trophoblast inclusions
�2 Specialised placental cells known as trophoblasts make up the two layers of the placental surface–the outer, syncytial trophoblast layer and the inner, cytotrophoblast layer.
�2 As they multiply, the two layers normally fuse, causing bulges in the placental surface that become new villi connecting the placenta to the uterus.
�2 Abnormality occurs when the multiplying cells in the inner layer mostly fail to fuse with the outer layer. That causes the placental surface to curl inward, forming divots called trophoblast inclusions. (mothertalkers.com)
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