This term applies when the male partner is either the sole or a contributing cause of infertile couples. A detailed sperm analysis is used to evaluate the male and can determine the volume (amount), motility (movement) and morphology (shape) of the sperm.
The cause of abnormal sperm can be:
- –Varicocele (dilated or varicose veins in the scrotum)
- –Duct obstruction
Additional testing including blood, semen cultures and a comprehensive examination by a urologist can help identify the cause.
Treatment for male factor infertility may include:
- –Surgical correction of a varicocele or duct obstruction
- –Hormonal medications to improve sperm production
- –Antibiotic therapy for infection
In many cases, no direct treatment for decreased sperm counts is effective. In those instances, IVF with ICSI may be recommended.
Microsurgical Sperm Aspiration
Male factor infertility can result in a variety of issues such as complete absence of sperm in the ejaculate (azoospermia) due to either an obstruction/blockage (obstructive azoospermia) often caused by a previous vasectomy or congenital-birth defects. For these conditions, a surgical option can retrieve sperm from either the vas deferens, epididymis or testis for use in an IVF cycle(s) to conceive. Because the surgically retrieved sperm are immature, fertilization is achieved by injecting selected sperm directly into the egg by a process called intracytoplasmic sperm injection (ICSI).
Males considering this option are required to see a urologist prior to surgery to help determine the best approach for retrieving sperm including:
Microsurgical Epididymal Sperm Aspiration (MESA)
MESA collects sperm by aspirating fluid from the epididymis of the male reproductive tract. A fine needle is inserted through the scrotum into the epididymis and sperm are obtained by gentle suction. This procedure is used for cases of obstructive azoospermia.
Testicular Sperm Aspiration (TESA)
TESA is where a fine needle is inserted into the testis, a sample of tissue is obtained by gentle suction and then examined under the microscope. If sperm are not found, a small tissue sample (testicular biopsy) is taken through a small incision in the scrotum and testis, where sperm can then be extracted. This procedure is used for cases of non-obstructive azoospermia.
If possible, MESA and TESA procedures are timed to coincide with the egg retrieval step during the IVF cycle. For some, scheduling may be an issue. Surgical sperm retrieval can be completed before the IVF cycle begins and frozen (cryopreserved) for future use. The extraction of sperm completed by MESA and TESA typically results in enough sperm to allow several IVF cycles. These procedures can be performed on an outpatient basis using sedation to eliminate any pain or discomfort.