Which ART procedure involves cycle monitoring with the intention to transfer frozen-thawed or vitrified embryos to the uterus?

Which ART procedure involves cycle monitoring with the intention to transfer frozen-thawed or vitrified embryos to the uterus?

• A. Frozen-thawed embryo transfer (FET) cycle
• B. Fertilization cycle
• C. GIFT
• D. Freeze-all cycle

Answer: (A)

The main idea here is timing the transfer of embryos that have been frozen. In a Frozen-thawed embryo transfer cycle, embryos that were previously cryopreserved are thawed and then transferred into the uterus once the endometrium is prepared and deemed receptive. Cycle monitoring—tracking endometrial thickness, pattern, and hormone levels—helps align the uterine lining’s readiness with the embryo’s readiness to implant. Often a controlled hormone regimen or a natural cycle is used to optimize timing, with progesterone support after transfer to help maintain the lining. This is distinct from a fertilization cycle, which focuses on creating embryos; from GIFT, which moves gametes into the fallopian tubes; and from a Freeze-all cycle, which involves freezing all embryos in the stimulation cycle and planning transfer later, rather than transferring thawed embryos in the immediate cycle.

The main idea here is timing the transfer of embryos that have been frozen. In a Frozen-thawed embryo transfer cycle, embryos that were previously cryopreserved are thawed and then transferred into the uterus once the endometrium is prepared and deemed receptive. Cycle monitoring—tracking endometrial thickness, pattern, and hormone levels—helps align the uterine lining’s readiness with the embryo’s readiness to implant. Often a controlled hormone regimen or a natural cycle is used to optimize timing, with progesterone support after transfer to help maintain the lining. This is distinct from a fertilization cycle, which focuses on creating embryos; from GIFT, which moves gametes into the fallopian tubes; and from a Freeze-all cycle, which involves freezing all embryos in the stimulation cycle and planning transfer later, rather than transferring thawed embryos in the immediate cycle.