fresh embryo transfer
The transfer of an embryo to the uterus during the same cycle in which the eggs were retrieved and fertilized.
Full Definition
Fresh embryo transfer involves placing an embryo into the uterus within 3-6 days after egg retrieval, during the same treatment cycle. This approach allows for immediate transfer without the need for embryo freezing and thawing. However, fresh transfers may be associated with lower success rates in some cases due to the effects of ovarian stimulation on endometrial receptivity. The decision between fresh and frozen embryo transfer depends on factors including endometrial thickness, hormone levels, risk of ovarian hyperstimulation syndrome, and the need for preimplantation genetic testing.
Usage
Usage note: Contrasts with frozen embryo transfer; not capitalized unless beginning a sentence.
In Context
- "The fresh embryo transfer was cancelled due to risk of OHSS." — Clinical decision note
- "Studies show mixed results when comparing fresh embryo transfer to frozen transfer outcomes." — Research article