Indicators of sperm survival rate

Sperm count is an important index to measure fertility, but the analysis must be combined with individual specific conditions.

1) Sperm quantity: Normal people ejaculate 2 ~ 5ml at a time, and if it is less than 1ml, it is abnormal. Every time sperm is discharged (0.5ml is azoospermia, if there is no semen, it is azoospermia. Azoospermia and azoospermia are the main causes of male infertility. It is found in prostate or seminal vesicle lesions, congenital vas deferens occlusion or inflammatory stenosis or retrograde ejaculation.

2) Color: normally grayish white, it can be light yellow, milky white or slightly green when it is not ejaculated for a long time, which is found in reproductive tract or accessory gland. Semen redness (hemospermia) is found in seminal vesiculitis, cancer, tuberculosis, etc.

3) Viscosity: Normal fresh semen is liquid, which quickly turns into a viscous peptone-like semi-fluid after discharge, and then turns into a liquid after 5-30 minutes.

If it does not liquefy for 30 minutes, it is abnormal, which can be seen in the lack or insufficiency of some enzymes secreted by the prostate, tuberculosis of the reproductive system and fertility.

4) pH value: it is weakly alkaline under normal circumstances. If the pH value is between 7.7 and 8.5, too much acid or alkali in semen may affect sperm activity and metabolism, which is the main cause of sperm death (azoospermia).

5) Smell: Normal semen has a special fishy smell, which is emitted by prostatic fluid, and this fishy smell comes from a component of prostatic fluid.

6) Sperm count: Men with normal fertility contain 0.6 ~/kloc-0.5 billion sperm per ml of semen, sometimes up to 200 million. The total number of sperm discharged at a time is about 300 million, but the content of sperm varies from person to person, even if the same person is at different times. Therefore, the diagnostic value of calculating the total number of sperm discharged each time is more meaningful than checking the number of sperm alone.

Too high sperm density (more than 250 million per milliliter) is called oligozoospermia, which often affects sperm activity. Even if pregnant, it is easy to miscarry, mainly because the quality of sperm itself is not high.

In order to evaluate male fertility, fertility index (I) can also be used for research. It is mainly calculated by taking the percentage of active sperm (m), the number of sperm per milliliter of semen (n), the speed of sperm movement (v), the percentage of abnormal sperm (a) and 10 as constants, and its formula is: I=M.N.V./A. 106. If it is greater than/kloc,