Recent Research Says Single-Embryo Transfer IVF as Effective as Multiple Embryo Transfers

An increasing amount of research, including a study published in the March 22 edition of the journal Lancet, suggests that implanting one embryo for in vitro fertilization treatment is as likely to result in pregnancy as implanting multiple embryos, but some physicians say that most IVF patients are not interested in single-embryo transfer, the Boston Globe reports. According to the Globe, the likelihood of multiple births, premature birth and low birthweight increase with the number of embryos implanted during an IVF procedure. The Lancet study, led by Bart Fauser of Utrecht University, compared a group of women under age 38 who underwent a single-embryo transfer and a milder ovarian stimulation with a group of women who underwent multiple embryo transfers and standard ovarian stimulation. The multiple embryo group had a higher pregnancy rate after one or two IVF cycles, but the rate of the two was the same after one year.

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