What are the chances of in vitro fertilization?

The success probability of in vitro fertilization is usually between 30% and 50%, which is related to factors such as female age, ovarian function, and embryo quality. Clinical data shows that the success rate of a single cycle for women under 35 years old can reach 40%-50%, and may drop to less than 20% for women over 40 years old.

The core factor that affects the probability of IVF is the woman's age. Women aged 25-30 have good ovarian reserves, high egg quality, and a high probability of embryo implantation. The single-cycle success rate is usually maintained at 45%-50%. The success rate drops slightly between the ages of 30 and 35, reaching about 40%-45%. After the age of 35, the number and quality of follicles decline at an accelerated rate, and the success rate drops to 30%-35% at the age of 38-40, and may only be 15%-20% after the age of 40. In addition to age, an endometrial thickness of 8-12 mm is more conducive to embryo implantation. Too thin or too thick will affect the probability of pregnancy. Sperm quality is also critical. The proportion of normal morphological sperm exceeding 4% can increase the fertilization rate. Laboratory conditions such as embryo culture technology and cryopreservation technology will also have a direct impact on the results. Some reproductive centers use preimplantation genetic screening technology to screen embryos with normal chromosomes, increasing the success rate by 5%-10%.

For patients with organic lesions such as hydrosalpinx and uterine fibroids, surgical treatment is required first. Follicular development can be improved in patients with polycystic ovary syndrome through optimization of ovulation induction regimen. Patients with repeated transplant failures may need to adjust their immunotherapy regimen. Some centers will recommend accumulating 3-6 high-quality embryos and then performing sequential transplantation. This strategy can increase the cumulative pregnancy rate to 60%-70%. The selection of different ovulation induction programs such as antagonist programs and micro-stimulation programs also needs to be individually formulated.

It is recommended that couples adjust their lifestyles 3-6 months in advance. Men should avoid high temperature environments and supplement zinc, while women can increase their intake of vitamin D and coenzyme Q10 appropriately. During the period of treatment, medication must be strictly followed as prescribed by the doctor, and strenuous exercise must be avoided after transplantation but no absolute bed rest is required. If the first transplant is unsuccessful, the reasons for the failure can be analyzed and the plan adjusted to try again. Most clinical studies show that the cumulative success rate of three transplants can reach about 80%. Maintaining a regular schedule and a peaceful mind are of positive significance to improving pregnancy outcomes.