Answer from: Raúl Olivares, MD
The success rate of TESA depends on the indication. It is not the same if we are going to do TESA in a patient who has had a vasectomy, for example, which obviously means that he’s going to be a fertility proven patient than if we are going to aspirate or obtain sperm in a patient with a severe oligozoospermia, with a low volume testicles.
In these cases, on top of having difficulties obtaining the sperm, it may also happen that this sperm may carry genetic issues. The medical background is very important, and this is something that should be discussed with the andrologist and the patients to see the chances of first obtaining sperm and second, that this sperm may help create a healthy embryo.
Answer from: Andris Abele, MD
Sperm retrieval success rate by using TESA depends on whether azoospermia is obstructive or non-obstructive. In men with obstructive azoospermia, the sperm retrieval rate is close to 100%, while in men with the non-obstructive condition it is only 15 to 50%. It is also important to understand that pregnancy and birth success rates are highly dependent on female factors such as age, FSH level, BMI, and antral follicle count.
What can we expect after using TESA in terms of the IVF outcomes?
Some studies suggest that TESA is less successful compared to other sperm retrieval procedures like TESE. Is that correct? How successful is TESA? When is it indicated?
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