Title:Fresh or Frozen Embryo Selection in Embryo Transfer: Live Birth Rates and Obstetric and Fetal/Neonatal Results
Volume: 18
Issue: 1
Author(s): Nurcan Kirca and Meryem Öngen*
Affiliation:
- Department of Obstetrics & Gynecological Nursing, Faculty of Nursing, Akdeniz University, Antalya, Turkey
Keywords:
Embryo transfer, fetal, fresh embryo, frozen embryo, neonatal, pregnancy
Abstract: Assisted reproductive techniques used in the treatment of infertility have been promising
methods for infertile individuals. Embryo selection and embryo transfer are an important part of assisting
reproductive techniques. The selection of the embryo to be transferred is important for implantation
and clinical pregnancy success. In addition, whether to use a fresh embryo or frozen embryo
for embryo transfer is a controversial issue. While the fresh embryo transfer technique is widely
used, the frozen embryo transfer technique has become widespread. The main factor in choosing
the method of freezing the embryos is to avoid the negative effects of controlled ovarian hyperstimulation
on endometrial receptivity. Therefore, it is thought that the use of frozen embryos can improve
pregnancy outcomes and reduce the risk of developing obstetric and perinatal problems.
However, there are problems in the embryo freezing technique, such as the risk of developing degeneration
in the embryo during the freezing or thawing process and postponing the transfer. In addition,
adverse conditions have been reported, such as an increased risk of developing hypertensive
disorders in the mother and macrosomia in the baby.
