Samia Insaurriaga Jundi, Nikolas Cunha de Assis Pereira, Thaís Mendes Merighi, Jéssica Fernandes dos Santos, Isaac Moise Yadid, Márcio Coslovsky, Thelma Santos Criscuolo, Ivan Andrade de Araujo Penna
JBRA Assist. Reprod. 2021; 25 (1):168-170
Received February 12, 2020
Accepted August 15, 2020
Abstract
Single embryo transfer is highly encouraged on in vitro fertilization due to lower rates of multiple pregnancy. Despite of that, the likelihood of multiple pregnancy is higher when assisted reproductive technology is used, probably because of the embryo manipulation.
Timing is crucial in the post-fertilization division of a single embryo to determine the aminiocity and chorionicity of the gestation. In the case reported a 38 year-old woman, nulligravid, had a single blastocyst implanted and that result in monozygotic dichorionic-diamniotic twins.
Despite being rare, similar cases have already been reported questioning the current knowledge about time of embryo division and the impact of assisted reproduction.
