Single Embryo Transfer
Also written as: SET — Single Embryo Transfer
The practice of transferring only one embryo during an IVF cycle to reduce multiple pregnancy risks.
Full Definition
Single embryo transfer is a clinical practice where only one embryo, typically the highest quality available, is transferred to the uterus during an IVF cycle. SET has become the standard of care in many fertility centers as it significantly reduces the risk of multiple pregnancies while maintaining acceptable pregnancy rates, especially when combined with blastocyst culture and good embryo selection criteria. This approach requires robust embryo assessment capabilities and often involves cryopreservation of additional good-quality embryos for future use.
Usage
Usage note: Distinguish between elective SET (patient choice) and mandatory SET (clinic policy).
In Context
- "The clinic policy recommends SET for patients under 35 with good-quality blastocysts." — clinical guidelines
- "SET was performed with a top-grade blastocyst showing excellent morphology." — procedure note