Embryo transfer is the last step of in vitro fertilization treatment. Embryos are placed in the uterus, usually 48-72 hours after egg collection, when they are 2-8 cells old. But the procedure can also be performed between the 2nd and 6th days.
The patient to whom the embryo transfer will be transferred must be urinary. A predetermined number of embryos are released from the cervix with a thin catheter under the guidance of abdominal ultrasound. Embryo transfer is not a painful procedure and does not require anesthesia. After the procedure, the patient is given hormone medications in the form of injections, suppositories or cream to support the tissue lining the uterus (endometrium). This treatment continues until the tenth week of pregnancy if pregnancy occurs. In cases where pregnancy does not occur and menstrual bleeding occurs, treatment is discontinued as soon as bleeding begins. On the 12th day after embryo transfer, the patient is called for a blood pregnancy test. In those with a positive test, the blood test is repeated two days later.
No difference was found between returning to normal activities and rest after embryo transfer in terms of pregnancy. However, it is recommended that the patient not do heavy work for 3-4 days after the procedure.
There is a direct relationship between the number of embryos transferred and clinical pregnancy rates. The best results are obtained by transferring 2-4 embryos. Multiple pregnancy rates are quite high when more than two embryos are transferred.
Figure 1. Eight-cell embryo
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