Male health knowledge: which is the most important between sperm vitality and sperm quantity

Routine semen examination is the main examination item in male infertility. Routine semen examination indicators include semen volume, color, pH, agglutination, liquefaction, sperm count, sperm vitality, etc. Among them, sperm motility is a very important indicator. Although the number of some patients is OK, they can not bear normally due to lack of activity and slow operation.

The examination method has been improved in judging sperm movement speed. In the past, the inspection was often based on the subjective judgment of the inspector under the microscope according to the results of the naked eye observation, which was not only affected by the technical level of the inspector, but also quite subjective. Later, the examination method was improved continuously, and no longer a general rough evaluation was made. The use of good, medium and weak judgment methods can no longer accurately determine sperm motility. From 1970s to 1980s, foreign countries successively developed laser scattering measurement technology and computer image processing automatic analysis system, which made the level of semen examination reach a very accurate and perfect level. After years of efforts, China has designed and developed the above two systems by itself, filling the gap in China and making China's sperm function analysis technology reach the international level.

According to this detection method, the distribution peak of sperm movement speed of normal people is 36 microns per second, and its average movement speed is 35 microns per second. The sperm movement speed of infertile patients is significantly lower than that of normal people, and its distribution peak is 32 microns per second, and its average movement speed is 31 microns per second. The latter is obviously lower than that of the former. There is a significant difference between the two groups.

According to clinical data, about 20% of male infertility patients are azoospermia, about 30% are oligospermia, and about 40% of human sperm movement speed is less than 31 microns per second, of which about half is less than 28 microns per second. Many patients think that if the sperm quantity is good, it means that they can't bear, and often complain about others. In fact, there is a problem in sperm speed. Fan, director of Shanghai Marriott Hospital, said: In clinical practice, it is of great significance to analyze sperm movement speed for the treatment of male infertility. In fact, the sperm movement ability is low. If the average movement speed of a person's sperm is less than 28 microns per second, regardless of the number of sperm, it should be considered as asthenospermia and can be treated as the cause of infertility.