Reasons why IVF eggs are not fertilized

Only after the egg is fertilized can a fertilized egg be formed and a woman can become pregnant. When a couple chooses to have in vitro fertilization, the doctor usually takes out the sperm and egg and combines them in vitro. At this time, it is possible to effectively observe whether the egg is fertilized, but some women observe that their eggs are not fertilized, which also leads to the inability to form fertilized eggs. So what is the reason for the egg not being fertilized?

If some factor directly affects the motility of sperm, especially its forward movement, the sperm will not be able to swim to the specific location of the egg within the optimal time, and fertilization will not be possible. In addition, if sperm stays in the vagina for too long, the survival time of sperm is shortened. About 30% of male infertility is caused by low sperm motility. There is still a possibility of pregnancy with asthenospermia, but it is not very high.

When sperm and egg cannot fuse together, it may be that the sperm or egg is lacking a certain enzyme or other thing.

IVF is generally suitable for the following groups of people:

1. Patients with fallopian tube obstruction;

2. Patients with unexplained infertility who have failed to become pregnant through IUI and other treatments;

3. The male has severe oligospermia or azoospermia and needs to obtain sperm through testicular or epididymal puncture;

4. Women with endometriosis and infertility can use IVF to assist pregnancy as appropriate;

5. Patients with ovulation disorders have no mature follicle growth after general ovulation induction treatment.

Regarding the problem of unfertilized sperm and eggs during in vitro fertilization, the article provides a detailed introduction. I hope that we can look at this issue correctly in our future lives. It also introduces people who are suitable for IVF, and I hope you can find the group that suits you.