London: Restricted growth of an embryo during the early stages of pregnancy is linked to its risk of miscarriage, a new study led by Indian-origin scientists has found.Researchers at the University of Nottingham found that 78 percent of single-baby pregnancies that ended in miscarriage were in the smallest 5 percent of embryos.They measured the length of more than 500 single and twin embryos during the first trimester.The Nottingham researchers tracked the growth of 247 singleton and 264 twin embryos conceived through IVF, because this allowed them to know the embryos’ precise gestational age.For each embryo, the distance from top of the embryo’s head to the bottom of its buttocks, the crown-rump length, was measured once during the first trimester using an ultrasound scan.The pregnancy was then monitored until birth.Using the measurements, the researchers discovered that poor growth in the first 12 weeks of pregnancy was a good predictor of miscarriage.“We also need to look at bloody supply to the embryo and whatever genes are passed on from the father too,” the BBC quoted Raj Mathur, a consultant gynaecologist as saying.
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