Preparation of the recipient
If the recipient menstruates regularly, there are two methods to prepare her uterus. Either the recipient’s cycle is synchronised to that of the donor by using a combination of hormonal supplements, or they temporarily suppress the recipient’s ovulation. Doctors usually use GnRH analogue drug type for this purpose. After the woman has her period, she starts taking estrogen hormone orally; later, Progesterone is added on the day the eggs are collected. This way, the endometrium (uterine lining) acquires the necessary thickness for the embryo to implant.
Preliminary tests done before the procedure are summarised below.
- A mock transfer with the same type of catheter used to transfer the embryos. Menopausal women, in particular, may have a narrow or deformed cervix. The cervix can be dilated under anaesthesia if necessary.
- Gynecological ultrasonography
- A pelvic exam where the doctor may take a pap smear or order a colposcopy for a more detailed examination.
- Hysteroscopy (if the clinician cannot get a clear view of the uterine lining through ultrasonography)
- Preparation of the endometrium (the uterine lining that is shed every month) using drugs. For a successful pregnancy to occur, the recipient’s endometrial thickness should reach at least 8mm.
Our centre may run the following tests on the recipient couple: