Swedish researchers find new method to avoid twins while maintaining high live birth rates

Swedish researchers have found a reliable way of deciding whether one or two embryos should be transferred during fertility treatment. The method simultaneously maintains a high chance of women giving birth to a live baby and reduces the chance of twins. Dr Jan Holte told the annual meeting of the European Society for Human Reproduction and Embryology that if this model were to be applied to all fertility clinics, it has the potential to lower twin rates to the level of just under 2% seen in the normal population. Another four clinics have started using the model.

Sweden leads the world in attempts to decrease multiple pregnancies by transferring only one embryo to a woman’s womb during fertility treatment whenever possible. In 2007, 69.9% of embryo transfers were single embryos, 30.1% were double embryo transfers, and only 5.3% of deliveries after fertility treatment were multiple deliveries – the smallest multiple delivery rate in the world.

Multiple pregnancies carry significant risks for both mothers and babies. Complications can include miscarriage, premature birth, low birth weight, cerebral palsy and death. ~ Science Daily, Jul 5

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