Embryo transfer is a key component of in vitro fertilization (IVF). Once a woman's eggs are collected and fertilized, the next step is to transfer one or more of the embryos thus obtained (fertilized eggs) into the woman's uterus. The embryologist will aspirate using a fine-tipped catheter the predetermined number of embryos from the culture in which they were fertilized and developed. The doctor guides the catheter through the vagina and the cervix, where the embryos are deposited. The embryo (s) transfer is generally performed under ultrasound guidance, either an abdominal ultrasound with a full bladder or a vaginal ultrasound without the need for a full bladder. A sedative can be administered to make the procedure more comfortable. Single embryo transfer- Single Embryo Transfer- The number of embryos transferred is based on the woman's age, her medical history, the quality of the embryos, the laws in force and the wishes of the woman. Although transferring a single embryo is generally recommended, it may be desirable to transfer two or rarely three due to the quality of the embryos, which is determined by laboratory reproductive specialists based on the age of the Woman and other factors. The decision on the number of embryos to be transferred must be made by the doctor and the patient, taking into account the probability of obtaining a pregnancy against the risk of multiple births (having twins or more). In many countries, the law sets a limit on the number of embryos that can be transferred.
Multiple embryo transfer The greatest risk of embryo transfer is the risk of multiple births (twins or more) due to the transfer of more than one embryo. Pregnancies and multiple births put babies at risk when they are at low birth weight or even a premature birth. There are also higher risks for the mother with a multiple pregnancy. Other risks associated with the embryo transfer procedure are minimal, but may include:
Embryo Transfer Success Rate- The embryos used in IVF for transfer can be fresh or frozen. A transfer of fresh embryos is carried out using fertilized eggs which have been collected, fertilized and transferred during the same menstrual cycle. A transfer of frozen embryos is done after the eggs have been taken, fertilized, developed as embryos and, frozen in a process called cryopreservation. A transfer of frozen embryos can be done during a menstrual cycle following the fresh IVF treatment cycle or during a subsequent menstrual cycle from when the eggs are taken. The results of pregnancies and births using frozen embryos are comparable to those with the use of fresh embryos, and they show no increase in birth defects or developmental abnormalities. Some research has shown that frozen embryo transfers are safer than fresh cycles for the mother and embryo since the female body has a chance to rest after egg retrieval (the first step in IVF). Since the embryos are frozen, they can be transferred later during a more natural menstrual cycle. To know more about single embryo transfer, multiple embryo transfer or embryo transfer success rate, visit the best Infertility treatment in India.
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