freeze-all cycle
IVF protocol where all viable embryos are cryopreserved rather than performing fresh embryo transfer.
Full Definition
An assisted reproduction strategy where all suitable embryos from a stimulation cycle are frozen for future use instead of proceeding with immediate fresh transfer. This approach is employed in cases of OHSS risk, inadequate endometrial development, elevated progesterone levels, or when preimplantation genetic testing is performed. The freeze-all strategy allows for better cycle segmentation, optimal endometrial preparation, and may improve pregnancy rates in certain patient populations. Frozen embryo transfer cycles can then be performed in subsequent months under more controlled conditions.
Usage
Usage note: Hyphenate as compound modifier; specify rationale for freeze-all decision in documentation.
In Context
- "A freeze-all cycle was recommended due to risk of ovarian hyperstimulation syndrome." — treatment decision
- "The freeze-all approach allowed for PGT-A testing on all eight blastocysts." — cycle summary