Sperm quality standards for test tube infants
IVF technology is a medical technology that requires very high sperm quality. The quality of sperm directly affects the success rate of IVF. The sperm requirements of IVF will be elaborated from four aspects.
Number of sperm
Sperm quantity is an important index to measure sperm quality. There should be more than 20 million sperm per milliliter of normal semen. For test tube babies, the quality of sperm is more demanding. Generally, about 20000 sperm are needed for a single IVF operation to improve the quality of embryos and the success rate of pregnancy.
In addition, the proportion of motile sperm in semen is also an indicator of sperm quality. In normal semen, motile spermatozoa should reach more than 50% and have good vitality. For IVF, the more active the sperm is, the more successful the fertilization will be and the quality of the embryo will be improved.
Therefore, in the process of IVF operation, doctors will count semen precisely and select sufficient and highly active sperm for fertilization.
Sperm morphology
Sperm morphology is also an important indicator of sperm quality. Normal sperm should account for more than 30% of the total sperm. The sperm with abnormal morphology may have deformed head, missing tail or irregular morphology. If sperm morphology is abnormal, it may have adverse effects on fertilization and embryonic development, and even lead to embryonic development abnormalities.
Therefore, during IVF operation, doctors will evaluate sperm morphology and select sperm with normal morphology for fertilization to improve embryo quality.
Sperm motility
The vitality of sperm refers to the motility and speed of sperm. The energetic sperm has a better ability to penetrate the egg cell, and is easier to combine with the egg cell and complete fertilization. Vigorous sperm is crucial to the success rate of IVF.
Sperm motility can be evaluated by observing the track and speed of sperm movement. The sperm with strong vitality has the characteristics of rapid progress in a straight line and frequent swimming. Therefore, in the operation of IVF, doctors will choose the sperm with strong vitality for fertilization to ensure successful fertilization.
Sperm genetic testing
Sperm genetic testing is mainly to exclude sperm carrying genetic diseases. Some genetic diseases may be transmitted to offspring through sperm, which may lead to genetic diseases after birth. In order to ensure the health of IVF, sperm genetic testing is a very important step.
In some professional IVF hospitals, they will screen common genetic diseases in sperm through sperm genetic detection technology, such as congenital heart disease, hereditary deafness, etc. Only the sperm passing the genetic test can be used for IVF.
Summary
In order to ensure the success rate of IVF and give birth to healthy babies, the quality of sperm is crucial. Sperm quantity, morphology, vitality and genetic detection are important indicators for evaluating sperm quality. Doctors will select appropriate sperm for IVF operation according to these indicators to improve the success rate of pregnancy and embryonic development.
