What is Embryo Transfer?
Embryo transfer implies the transfer of embryo formed as a result of fertilization of egg and sperm to the womb, which is the last stage of in vitro fertilization method. The highest quality embryos should be selected and transferred at the most suitable time to increase the chance of pregnancy.
How is Embryo Transfer Performed?
Oocyte pick-up procedure is carried out for the woman. Then, the eggs placed in the same environment with the sperm cells are waited to be fertilized within approximately 2 to 3 days and 2 to 8-cell embryo develops. Among these embryos, the healthiest and most quality ones are picked. The woman’s bladder should be full to obtain the most correct image with ultrasound before the transfer.
The patient is prepared like gynecological examination and access is made through the uterus using a fine catheter during embryo transfer which does not require anesthesia. The collected embryos are left in the mother’s uterus without causing pain. The patient can stand up approximately half an hour after the transfer.
Certain medications, suppositories and injections can be prescribed for the woman to decrease the risk of miscarriage and increase the chance of pregnancy. Blood test is ordered for Beta-HCG test on 10th-12th day of procedure and pregnancy control is made.
When is Embryo Transfer Performed?
The timing of transfer is one of the most crucial factors affecting the chance of pregnancy. Embryos should reach to a sufficient maturity level to be transferred to uterus. The most suitable time for transfer is decided considering certain features such as the age, medical history of the woman planning pregnancy, number and quality of embryos. This procedure is generally performed within 2 to 5 days after the fertilization.