Multiple Births From In Vitro Down
Pregnancy, Live Birth Rates Still Going Up Despite Guideline Limitations
Twin Births Troubling
American Society for Reproductive Medicine Executive Director Robert W. Rebar, MD, tells WebMD that the group is considering tightening the guidelines even further to address the issue of twin births.
"The fact that we have not lowered the percentage of twin births is of concern," he says. "Most people don't appreciate the fact that, like higher-order births, twin births are associated with greater obstetrical and neonatal morbidity and mortality."
He says single-embryo transfer will become a more attractive option for many infertile couples as assisted reproduction laboratories get better at freezing embryos.
"It is almost as cheap to freeze embryos and implant them one per cycle as it is to implant multiple embryos during a single cycle," he says. "This is an evolving practice, but I do believe that it is the direction that we are going in and that it will lead to a reduction of multiple births."