Success rate and time of IVF
As an assisted reproductive technology, IVF has helped millions of infertile couples realize their dreams of becoming parents. However, the success of IVF is closely related to time. The following will elaborate on the preparation stage of IVF, the time selection of embryo transfer, the relationship between success rate and age, and the duration of treatment cycle.
1. Preparation stage of in vitro fertilization
Before IVF treatment, couples need to make a series of preparations. First, women need hormone tests to assess ovarian function and ovulation. If the female ovulates normally, the next step is to stimulate the ovary and promote the development of multiple follicles by injecting synthetic hormones. This process usually lasts 10 to 12 days.
Then, under the guidance of a professional doctor, women inhibit natural ovulation by daily self injection of hormones, and then conduct ultrasonic monitoring at a predetermined time to determine the timing of follicle maturation. This usually takes five to seven days. Once the follicle is mature, the female will take the egg, and the sperm provided by the couple will be fertilized in vitro. This process usually lasts 1 to 2 days.
To sum up, the overall preparation period for IVF takes about 3 to 4 weeks.
2. Time selection of embryo transfer
After in vitro fertilization, the next successful step is to transfer the embryo back to the female uterus. Usually, doctors will choose the best time for transplantation according to the quality and quantity of embryos and the individual condition of women.
One option is to carry out fresh embryo transfer, that is, directly transfer the fertilized embryo back to the uterus. This process is generally carried out 3 to 5 days after fertilization. The other option is to carry out frozen embryo transfer, that is, to freeze the surplus embryos, thaw them at an appropriate time and transfer them back to the uterus. This process can be delayed to weeks or months later.
Considering the ovulation cycle and endometrial status of women, doctors will choose to conduct embryo transfer at the best time to improve the success rate.
3. Relationship between success rate and age
Age is one of the key factors affecting the success rate of IVF. The number and quality of female eggs will gradually decrease with age, which directly affects the success rate of fertilization and embryo development.
According to the data of the famous Johns Hopkins Hospital in the United States, the success rate of IVF for women under 35 years old is between 40% and 60%, while that for women over 35 years old is low, about 20% to 40%. The success rate of women over 40 years old has further decreased, usually below 10%.
Therefore, for older women, it is necessary to clearly understand the related risks before IVF, and formulate the most appropriate treatment plan under the guidance of doctors.
4. Duration of treatment cycle
The cycle time of IVF treatment varies from person to person, but it usually requires multiple cycles to achieve success. There will also be a certain interval between each cycle to give women time to recover and adjust their bodies.
According to Johns Hopkins Hospital, it takes an average of two to three cycles for women under 35 to succeed. For women over 35 years old, it takes an average of three to four cycles.
Although the IVF cycle may be long and lengthy, each cycle represents new hope and opportunities.
summary
The success of IVF is closely related to time. It takes 3 to 4 weeks in the preparation stage of IVF, and the time selection of embryo transfer needs to be flexibly adjusted according to individual conditions and embryo conditions. Age is one of the important factors affecting the success rate, and the duration of the treatment cycle also needs to be considered. Although everyone's situation is different, IVF treatment can help more couples realize their beautiful family dreams through correct preparation and doctor's guidance.
