Epididymal Sperm Aspiration/Testicular Sperm Extraction PDF Print E-mail


Epididymal Sperm Aspiration/Testicular Sperm Extraction (PESA/TESE)

 

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Those men whose sperm is not produced into the ejaculate due to an obstruction of the spermatic cord for example or due to a congenital dysfunction or irreversible vasectomy, spermatozoa are retrieved from the testes either by the use of a very fine aspiration needle guided into the epididymis or by minor testicular incision followed by a open biopsy. Although the spermatozoa recovered are usually short populated, the quality is good enough to secure equally good fertilization rates when compared with the conventional approaches.

 

Embryo Transfer Embryo replacement can take place as early as on the second day of development and by which time the fertilized egg is expected to have reached the 4 cell stage. Alternatively the procedure can be undertaken on any of the following days but not later than the 6th day of development. Embryos are replaced back into the uterus with the aid of a sterile and flexible catheter under abdominal ultrasound guidance. Once replaced the catheter is returned to the embryologist who will confirm successful implementation of the procedure.

 

Embryo transfers are performed without the need of a general anaesthesia but patients are advised to have a full bladder so that the threading of the catheter containing the embryos is facilitated.

 

Surplus embryos which have not been chosen for fresh transfer are cryo-preserved for the patient’s subsequent utilization.

 

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Last Updated ( Wednesday, 26 August 2009 )