In the laboratory inspection of men's infertility, of course, the sperm examination is of course the sperm examination.Conventional semen inspection indicators include: semen, color, pH, condensate, liquefaction, sperm count, sperm vitality, etc.
Among them, sperm vitality is a very important indicator, but in the past, it made subjective judgments based on the results of the inspectors under the results of the naked eye under the microscope. It was not only affected by the technical level of the inspector, but also with considerable subjectivity.
Some laboratories conduct classified records according to the good or bad of sperm movement according to the methods prescribed by the World Health Organization.Therefore, semen examination has been at a lower level.In the 1970s and 1980s, foreign countries successively developed the automatic analysis system of laser light scattering measurement technology and computer image processing, so that the level of semen examination reached a very precise and perfect level.
According to the test, the distribution of the sperm movement speed of normal human sperm is 36 microns/second, and its average exercise speed is 35 microns/second.There is a significant difference between /second and the two groups.
According to clinical statistics, about 20%of male infertility patients are non -sperm, about 30%are young sperm, and about 40%of human sperm movement is less than 31 micron/second (half of which are less than 28 microns/second.
Because a considerable part of the semen examination of male infertility appears to be normal, in fact, the sperm's exercise ability is low, so we initially believe that if a person's average exercise speed is less than 28 microns/second, it should be regarded as (that is, sperm vitalityPoor, or poor sperm exercise ability).
According to the results of animal experiments, there are significant differences in sperm movement speed, and the fertility rate of low speed is also low.For example, the sperm movement speed of beef can reach 50-70 microns/second, mice and rats can reach 4-55 microns/second, while the giant panda sperm movement is only about 20 microns/second.Low panda's reproduction ability is a big problem to protect this rare animal.
