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Causes of Male Infertility: Abnormalities of Sperm

 

It is the “spermatogenic dysfunction”, that is the failure to make sperm, which is overwhelmingly a common cause of male infertility.

 


Poor Sperm Condition

It is a condition where there are only a few sperm.  Depending on the degree, we will do artificial insemination and in vitro fertilization, and in cases where there in an extremely low number of sperm it becomes a candidate for micro-insemination.

 

Sperm Photo

 


Asthenospermia

It is a bad state of the motility rate of the sperm.  Depending on the course and condition, we will do artificial insemination, in vitro fertilization or micro-insemination.

 


Sperm Malformation

It is a condition where there are many sperms that are malformed.  We will choose normal sperm and do in vitro fertilization and micro-insemination.

Sperm Malformation

 


Azoospermia

This is a condition where there is not even one sperm found in the seminal fluid, but we can collect almost half of the patient’s sperm from the testicles and epididymis through TESE (Testicular Sperm Extraction).  If we find even just one sperm, then it will be a possibility of pregnancy through ICSI (Intra Cytoplasmic Sperm Injection- “micro insemination”), where we directly inject the sperm in to the egg.

 


Other Sperm Abnormalities

· Low amount of semen

· White blood cell count is greater than the reference value (because it represents inflammation, it is not good if there are many)

 


In 2010, The World Health Organization (WHO) released a new reference value for sperm. The criteria though is quite loose compared to the criteria being used now, and depending on the implementation of this, it will mean that about half of the sperm that had been considered up until now as “abnormal” will be “satisfactory” according to the reference value.  Fulfilling the reference value is a joyful thing, but it doesn’t actually mean that the situation will change at all.  Presently, because it is not clear in Japan as to whether this is a good evaluation, we are currently using the old way while doing treatment.

The Semen Reference Value adopted by Oak Clinic

Volume of Semen—
≧2.0ml

Concentration of Semen—
≧20 million⁄1ml

Sperm Motility—
≧50%

Regular Morphology Rate of Sperm—
≧15%

Leukocyte (white blood cell)—
<1 million⁄1ml

Semen Reference Value(Issued by the WHO in 2010)

Volume of Semen—
≧1.5ml

Concentration of Semen—
≧15 million⁄1ml

Total Motility Rate—
≧40%

Regular Morphology Rate of Sperm—
≧4%

Leukocyte (white blood cell)—
<1 million⁄1ml

Forward Motion Rate—
≧32%


 

 

 

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