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Fertility Centre Prague, Czech Republic
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Fertility Centre Prague, Czech Republic
LABORATORY METHODS PESA/MESA/TESE: Surgical sperm retrieval hero-image PESA/MESA/TESE: Surgical sperm retrieval hero-image
LABORATORY METHODS

PESA/MESA/TESE: Surgical sperm retrieval

In the absence of live sperm in the ejaculate, there is the possibility of obtaining sperm surgically from the epididymis (PESA or MESA) or testis (TESE).

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MESA (Micro Epididymal Sperm Aspiration) a PESA (Percutaneous Epididymal Sperm Aspiration)

In both methods, sperm are retrieved from the epididymis when transport of sperm between the epididymis and urethra is impaired. In PESA, sperm are aspirated together with the fluid from the epididymal ducts with a fine needle directly through the skin of the scrotum. In MESA, a small microsurgical skin incision is made, through which a needle is inserted and the fluid aspirated. The fluid is immediately analysed in the embryology laboratory.

TESE (Testicular Sperm Extraction)

If no sperm are retrieved using MESA, we proceed to the TESE procedure, which attempts to obtain sperm directly from the testicular germinal epithelium. Tissue samples are taken from small incisions in the outer testicular layer and referred to the embryology laboratory.

The procedures are performed on an outpatient basis under short general anaesthesia. The advantage of our clinic is that the procedure can be scheduled for the same day as egg retrieval from the female partner. The fresh sperm retrieved are immediately used for egg fertilisation using the ICSI method. Unused tissue is cryopreserved to avoid the need to repeat the procedure.

The joint team of a gynaecologist and urologist at the clinic is a prerequisite for both excellent cooperation and a high success rate of treatment.

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