Older test tube babies: procedures for egg retrieval and embryo transfer
IVF technology provides a way to overcome the problem of infertility for couples who cannot conceive naturally. In these technologies, egg retrieval and embryo transfer are two crucial steps. This article will introduce in detail the process of IVF egg retrieval and embryo transfer for older women.
Egg retrieval process
Egg retrieval is a key step in IVF technology, which involves ovulation promotion, egg retrieval and fertilization.
First, women need hormone therapy to promote ovarian ovulation. Common drugs include gonadotropin (FSH) and luteinizing hormone (HCG). These drugs can stimulate the ovary to produce more follicles and increase the chance of fertilization.
Then, after a period of hormone treatment, the size and number of follicles were monitored by B-ultrasound. Once the follicle is mature, the doctor will arrange an egg retrieval operation. This operation is usually performed 24-48 hours after the follicle matures. The operation is usually performed in the operating room, using local anesthesia or general anesthesia. Doctors use a slender catheter to enter the ovary through the vagina and extract the eggs from the follicle.
The eggs are then transferred to a laboratory where they can be fertilized with sperm.
Embryo transfer process
After the egg is fertilized, the embryo is cultured and grows into the stage required for transplantation.
Before embryo transfer, doctors will choose the best transfer time according to the development of embryos and the physiological conditions of patients. Usually, embryo transfer is carried out 3 to 5 days after the egg is taken out.
Embryo transfer does not require surgery, it is similar to women undergoing routine gynecological examinations. Doctors use a slender catheter to enter the uterus through the vagina, and carefully place the embryo in the uterus. This process usually does not require anesthesia, and only a small amount of discomfort will be felt.
After embryo transfer, women need to rest for a period of time to reduce physical activity and create favorable conditions for embryo implantation.
Success rate and risk
The process of egg retrieval and embryo transfer is a crucial link in IVF technology. However, success rates and risks vary from individual to individual.
First, there may be some risks associated with ovum retrieval, including ovarian stimulation syndrome, endometriosis or infection. These potential risks need to be discussed in detail with the doctor before surgery.
Secondly, the success rate of embryo transfer depends on many factors, including the age of women, the quality of eggs and sperm, and the condition of endometrium. Older women usually have a relatively low success rate due to the decline of ovarian function.
Summary
The oocyte retrieval and embryo transfer of older IVF is a complex process, in which the oocyte retrieval involves hormone therapy, ovarian monitoring and surgical oocyte retrieval; Embryo transfer needs to choose the right time and place the embryo in the uterus. However, the success rate and risk depend on individual conditions, including age, egg and sperm quality, etc. It is very important to have a detailed discussion and evaluation with the doctor before carrying out this technique.
