The main reasons for IVF failure are embryonic factors, parents’ age, ovarian function, intrauterine factors, immunity and coagulation abnormalities.
1. Embryonic factors: mainly refers to chromosomal abnormalities in embryos, such as abnormal chromosome number and structure, such embryos are usually prone to abnormal development or embryonic arrest, resulting in IVF failure.
2. Parents’ age: if the age of parents is more than 38, the quality of eggs and sperms will be relatively lower, resulting in lower success rate.
3. Intrauterine factors: thin endometrium, uterine deformity, uterine cavity adhesion and other conditions are not favorable to the embryo’s implantation. Patients with poor ovarian function get fewer eggs and the quality of eggs is relatively poor, which affects the success rate of IVF and the miscarriage rate is relatively high.
4. Abnormal immune coagulation function: autoimmune diseases or certain diseases make the blood in high coagulation state, which can affect the embryo’s implantation and development.
IVF failure may also be caused by other factors, patients should actively consult the doctor for examination to identify the causes and take corresponding measures under the doctor’s guidance to improve the success rate.