TESA / PESA
ICSI has been a major breakthrough in the field of ART , having help fulfill the dream of infertile men to have their biological child Sperm production is started and completed in the seminiferous tubules of testis and takes up to 70 days to produce a mature sperm. The sperms are than stored and transported to be ejaculated. Around 10% of infertile men suffer from azoospermia, that is nil sperm count. It may result due to a defect in either the production of sperms (nonostructive azoospermia) or due to defect in its transport (obstructive azoospermia).
Studies report that in upto 60%men with non obstructive azoospermia there is some sperm production in some parts of testis, which can be extracted surgically directly from the testis.
TESA (Testicular Sperm Aspiration)
TESA (Testicular Sperm Aspiration) is one such technique in which a fine needle is passed into the testis under local anesthesia and than testicular tissue is aspirated using negative pressure. This tissue is than processed in the IVF lab under the microscope and checked for presence of sperms which can be utilized to fertilize the eggs using ICSI. The sperms can also be cryopreserved for potential use later.
PESA- men with obstructive azoospermia have normal sperm production however there is a block in their transport passage as in congenital absence of vas deferens, vasectomy or ejaculatory duct obstruction. The sperm in these men are aspirated percutaneously using a needle generally from the epididymis and used for ICSI treatment or cryopreserved.
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