How to determine the pregnancy cycle of IVF?
IVF is a way to help couples who cannot conceive naturally realize their dreams of procreation through assisted reproductive technology. The pregnancy cycle of IVF is a key link, which determines whether couples can finally have a baby successfully. The following will elaborate on the determination of IVF pregnancy cycle from four aspects: embryo implantation, drug conditioning, monitoring and inspection, and in vitro fertilization.
1. Embryo implantation
The pregnancy cycle of IVF is based on embryo implantation. After cell culture and quality assessment, the most suitable embryo will be selected for implantation. Embryo implantation is usually done in a woman's uterus. First, women need to undergo a series of examinations (such as hysteroscopy) to ensure that the thickness and quality of the endometrial layer are suitable for accepting embryos. Generally speaking, the thickness of the endometrial layer should reach 7-9 mm, which is the best time for embryo implantation.
After determining the appropriate endometrial conditions, the doctor will select the appropriate time for embryo implantation. The best time for embryo implantation is usually around the 21st day of the female menstrual cycle (the specific cycle may vary depending on individual conditions). When the embryo is implanted, the doctor will use a special catheter to send the embryo into the uterine cavity. This process is usually simple and fast, and does not require anesthesia.
After embryo implantation, it usually needs to wait about 10 to 14 days until pregnancy test. If IVF is successful, women will show signs of pregnancy, such as delayed menstruation, breast pain, nausea, etc.
2. Drug conditioning
Drug conditioning plays an important role in the pregnancy cycle of IVF. Generally, before embryo implantation, women will receive medication for a period of time to adjust ovarian function and improve the quality and quantity of follicular development. Commonly used conditioning drugs include ovulatory stimulating hormone, luteinizing hormone, etc.
These drugs generally need to be used for a period of time to achieve effect. The doctor will determine the dosage and cycle of medication according to the basic condition and ovarian function of women. Drug conditioning can increase the success rate of IVF, and can better control the time of ovulation and embryo implantation.
3. Monitoring and inspection
In the IVF cycle, each step requires regular monitoring and inspection. This is to ensure the suitability of the ovarian function in the female body and the intrauterine environment.
Monitoring and inspection generally include: follicle monitoring, endometrial monitoring and luteal function monitoring. Follicle monitoring The condition of follicles in the ovary is checked by ultrasound to determine the size and number of follicles, so as to determine the best time for egg collection. Endometrial monitoring is mainly to check the thickness and quality of endometrium through ultrasound to ensure the best conditions for embryo implantation. The luteal function monitoring is mainly to check the luteal function through blood or urine to determine whether the follicles discharge eggs normally.
4. In vitro fertilization
In vitro fertilization is one of the core steps in the IVF cycle. It includes two sub processes: egg collection and sperm acquisition.
Egg collection is usually carried out before the implantation of female embryos. Doctors will use special surgical instruments to remove eggs from the ovary. This process requires the use of analgesia and anesthesia, and precise operation. For sperm acquisition, men need to provide fresh semen samples or perform sperm extraction surgery.
After collecting eggs and sperm, laboratory technicians will place them in the culture medium for in vitro fertilization. The fertilized embryos will be cultured in the incubator until the best time for embryo implantation comes.
Summary
The pregnancy cycle of IVF mainly includes four important aspects: embryo implantation, drug conditioning, monitoring and inspection, and in vitro fertilization. The timing of embryo implantation and the suitability of endometrium play a key role in the success of pregnancy. Drug conditioning improves the success rate of IVF by increasing the number and quality of follicles. The monitoring and inspection ensured the smooth progress of the whole process and the best condition of women's internal environment. In vitro fertilization provides important technical support for the realization of IVF.
Through the above steps, the pregnancy cycle of IVF can be accurately determined, and it also provides a feasible way for couples to have their own healthy babies.
