(1) Female factors: The female’s age means that her egg cells are older. When she is over 35 years old, her egg cell reserve will be significantly reduced, and the egg cell quality will be significantly reduced, which will significantly affect the pregnancy rate of IVF.
(2) Male factor: Mainly refers to the quality of sperm, especially when the sperm motility is less than or equal to 4%, or when the proportion of abnormal sperm is greater than or equal to 60%, The success rate of IVF will be significantly reduced. In addition, if the sperm density is less than or equal to 5 million per milliliter, conventional IVF has almost no chance of success.
(3) Influence of causes of infertility: The pregnancy rates of IVF are different for patients with different causes. For example, if infertility is simply caused by bilateral fallopian tube obstruction, the pregnancy rate will be different. The success rate is higher. The success rate is lower for women who are older than or equal to 35 years old or have severe semen abnormalities.
(4) Effects of induced superovulation:The ovaries have different responses to drugs, and the number, size and development rate of follicles all affect its success rate.
(5) Influence of laboratory environment and operation: Laboratory culture system, environmental conditions such as temperature, humidity and cleanliness, etc., proficiency and accuracy of manual operation process Sex, etc., may have adverse effects on eggs, sperm and embryos, thus affecting their pregnancy rate.
This article is provided by Baidu Reading and is excerpted from \”The Clear \”Conception\” Plan\” Author: Sun Jianqiu and Xie Yingbiao