What is ICSI width testicular biopsy (TESA)?
The ICSI (Intra Cytoplasmic Sperm Injection) through testicular biopsy TESA (Testicular Sperm Aspiration) is an In-Vitro Fertilisation procedure that uses an intracytoplasmic sperm injection with spermatozoa obtained directly from the testicle.
Some male patients do not produce spermatozoa in their ejaculate. This is known as Azoospermia. Nevertheless, depending on the cause of this azoospermia, in many cases a testicular biopsy is performed to extract spermatozoa from the testicle; this is an outpatient surgical procedure in which one or several incisions are made in one or both testicles to retrieve male spermatozoa and obtain a small sample. This sample is processed in the lab and if there are any spermatozoa we are able to obtain these.
The sample can be used either fresh or frozen.
Who is it recommended for?
The ICSI with TESA (Testicular Sperm Aspiration) helps patients overcome infertility problems such as:
Is there any difference in the results obtained if I use a fresh or a frozen sample?
Using frozen sperm from the testicle yields the same results as using fresh sperm. Here is why: after retrieving the spermatozoa from the testicles, these are mixed with a freezing medium that contains a cryoprotector which protects the sperm during the freezing process and allows them to survive it.
Once we have the sperm (either fresh from the Biopsy or frozen) we can then proceed to inject the egg. For this procedure the biologist must find and select the best spermatozoon for fertilisation.
At Clínica Tambre, the pregnancy rate for TESA using the male partner’s testicular sperm and the female partner’s own eggs is 60%