The influence of the number of embryos transferred in 1060 in-vitro fertilization pregnancies on miscarriage rates and pregnancy outcome.

@article{Balen1993TheIO,
  title={The influence of the number of embryos transferred in 1060 in-vitro fertilization pregnancies on miscarriage rates and pregnancy outcome.},
  author={Adam H. Balen and J. Paige MacDougall and Seang Lin Tan},
  journal={Human reproduction},
  year={1993},
  volume={8 8},
  pages={1324-8}
}
To assess the incidence of miscarriage, multiple pregnancy and outcome of pregnancy in relation to the number of embryos transferred during in-vitro fertilization (IVF), an analysis was performed of 1060 pregnancies conceived in a tertiary-referral IVF clinic. There was no difference in the miscarriage rate after transfer of one or two embryos (37.7% and 34.6%), or after three or four embryos (22.5% and 25.2%). The miscarriage rate was, however, higher when one or two embryos were transferred… CONTINUE READING

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