Extra embryos are sometimes created and frozen during IVF, for use in later cycles. In addition, some couples freeze their embryos as a form of fertility preservation. When the couple is ready to use their frozen embryos, a frozen embryo transfer cycle is performed. Below, we will take a look at the basics of the frozen embryo transfer procedure.‍

Pretesting

‍Prior to a frozen embryo transfer cycle, pretesting should be performed to ensure that the woman will be able to receive the embryo for maximum chances of success. Hysterosonogram or hysteroscopy may be used to examine the inside of the uterus before the cycle is started. If necessary, treatment can be performed before the cycle begins.

‍Hormonal Preparation

‍In most cases, hormones are used to prepare the uterus for the frozen embryo transfer procedure. Usually, women receive the following hormone medications:

• Lupron - Lupron suppresses the pituitary gland, preventing ovulation. Two weeks of daily Lupron injections is common.
• Estrogen - Estrogen causes the uterus to thicken and mature the uterine lining. Estrogen can be given in pill form. Transvaginal ultrasound is used to determine how much the uterine lining is thickening in response to estrogen administration.
• Progesterone - Once the uterine lining is thick enough, progesterone is added and Lupron can be withdrawn. Progesterone matures the uterine lining, so that it is ready for the embryo to implant. The transfer must be performed on a certain day after starting progesterone. Progesterone is usually continued several weeks into the pregnancy. Progesterone is administered via intramuscular injection and vaginal gel.

Frozen Embryo Transfer Procedure

At IVF1, embryos are frozen at the blastocyst stage, which means that the embryo was developing in the laboratory for five days prior to being frozen. To receive a blastocyst, the embryo must be exposed to progesterone for five days. Typically, progesterone therapy begins on a Sunday, and the embryo is thawed and transferred on a Thursday.

During the frozen embryo transfer procedure, you will be placed under conscious sedation and given pain medication. The embryologist preloads a catheter with embryos, then inserts it through the cervix. The embryos are deposited in the uterus. Within two weeks, it will be possible to test for pregnancy.After the procedure, you can safely return to normal activities like working and exercising. However, since sedation is used, you will not be able to drive, operate heavy machinery, or make important decisions for the next 24 hours. Dr. Randy Morris would be happy to meet with you about your fertility. To schedule your consultation today, please click below and enter your information or call IVF1 at (630) 357-6540.