Influence of semen quality of test tube infants on success rate
In vitro fertilization (IVF) is a fertility method that combines sperm and eggs in the laboratory and cultivates them, and then transfers the well developed embryos to the mother's uterus. Semen quality is an important factor in the success rate of IVF. The following will elaborate on the influence of IVF semen quality on the success rate in terms of sperm quantity, vitality, morphology and quality.
Number of sperm
The number of sperm is one of the key indicators to judge the quality of semen. In the process of in vitro fertilization, it is necessary to select enough high-quality sperm from semen to combine with eggs. If the number of sperm is insufficient, it will affect the probability of egg fertilization. In addition, the number of sperm selected may also be affected by depletion, because there must be multiple operational steps in the IVF process. Therefore, the more sperm in semen, the higher the success rate.
In high-quality semen samples, the number of sperm is usually within the normal range. However, some factors may lead to the decrease of sperm number, such as lifestyle and environmental problems, such as smoking, excessive drinking, and exposure to harmful chemicals. Therefore, improving living habits and diet and avoiding the influence of harmful substances can improve semen quality and success rate.
Sperm motility
Sperm motility refers to the swimming ability of sperm. Only energetic sperm can swim to the egg and complete the fertilization process. If sperm activity is low, it will reduce the chance of egg fertilization.
Many factors may lead to the decline of sperm motility, including age, environmental factors and health status. Age is an important factor, and male sperm vitality usually decreases with age. Therefore, semen samples from young couples usually have better sperm motility.
Sperm morphology
Sperm morphology refers to the external structure and shape of sperm. The sperm with normal morphology has higher fertilization ability and survival rate. Abnormal sperm may not be able to successfully penetrate the outer layer of the egg.
Abnormal sperm morphology may be caused by genetic factors, environmental factors, lifestyle and other reasons. In the process of IVF, selecting sperm with normal morphology can improve the probability of fertilization and embryonic development. Therefore, understanding and improving sperm morphology can improve the success rate of IVF.
Semen quality
Semen quality is an index for comprehensive evaluation of sperm quantity, motility and morphology. In addition to the above mentioned factors, semen quality may also be affected by other factors, such as semen liquefaction time, pH and viscosity.
In order to evaluate semen quality, semen analysis is usually required. This can be done in a professional hospital or laboratory. In some studies, it has been found that there is a certain correlation between semen quality and the success rate of IVF. Therefore, the evaluation and improvement of semen quality is an important step to improve the success rate of IVF.
Summary
The success rate of IVF is affected by many factors, among which semen quality is a key factor. The quantity, vitality, morphology and semen quality of sperm will directly affect the probability of egg fertilization and embryo development.
Therefore, maintaining a healthy lifestyle, avoiding environmental pollution and avoiding harmful substances can improve semen quality and success rate. In addition, regular semen analysis and evaluation, as well as receiving appropriate treatment when necessary, are also important steps to improve the success rate of IVF.
