embryo transfer
The procedure of placing a fertilized embryo into the uterus during assisted reproductive technology treatment.
Full Definition
Embryo transfer (ET) is the final procedural step in an in vitro fertilization cycle where one or more embryos are placed into the woman's uterine cavity with the goal of establishing pregnancy. The procedure is typically performed 3-5 days after egg retrieval, using a thin catheter guided through the cervix under ultrasound visualization. The timing and technique of embryo transfer significantly impact implantation success rates. Transfers may involve fresh embryos from the same cycle or frozen embryos from previous cycles (frozen embryo transfer or FET). The number of embryos transferred is carefully considered to balance pregnancy success with the risk of multiple births.
Usage
Usage note: Often abbreviated as ET in clinical notes; maintain consistency within documents.
In Context
- "The embryo transfer was scheduled for day 5 post-retrieval using a single blastocyst." — Treatment schedule
- "Following the embryo transfer, the patient was advised to rest for 30 minutes." — Post-procedure note