IVF
If you are moving forward with any type of sperm retrieval option, this means you'll attempt to get pregnant through lab assistance using a process called IVF (likely IVF/ICSI). This process involves harvesting eggs from your wife, injecting each egg with one sperm to form an embryo, and then implanting those embryos into your wife. It's a daunting process but millions of couples go through each year.
There are some special considerations for IVF combined with azoospermia, and some general things about IVF to understand.
Fresh vs. Frozen Sperm After microTESE
Fresh sperm
Fresh sperm can be used immediately if the female partner undergoes egg retrieval on the same day as microTESE. This approach may offer slightly better fertilization rates since it avoids freeze-thaw damage, but requires precise coordination of both partners' cycles and creates significant logistical challenges.
Frozen sperm
Frozen sperm is the preferred approach at most centers. Sperm retrieved during microTESE are cryopreserved and used later when the female partner is ready for her IVF cycle. While there may be minimal loss of quality from freezing, the practical advantages are substantial: flexible timing, backup samples for multiple cycles, and elimination of coordination stress. Fertilization rates with frozen testicular sperm remain excellent with ICSI, making this the standard approach despite the theoretical advantage of fresh sperm. Some number of men may have so few sperm that not enough sperm survive the thaw.
IVF Clinic Ranking
All IVF clinics in the US report their success data publicly. However, this can be hard to compare, as different clinics have different groups of patients (primarily age related). Someone put together a ranking of the IVF clinics with the best success data in the US here:
Best IVF Clinics in the USABut really, for azoospermia, it's important to go to an IVF center that commonly deals with azoospermic patients. Looking for rare sperm in ejaculate and surgical samples is something that requires a lot of experience.
Mini-IVF vs. Conventional IVF
Mini-IVF uses low-dose or oral fertility medications to produce 2-5 eggs per cycle, while conventional IVF uses high-dose injectable hormones to retrieve 10-15+ eggs.
Mini-IVF Benefits:
- Lower cost and fewer injections
- Reduced side effects and OHSS risk
- More natural approach
- Some evidence that the eggs are better quality
Conventional IVF Benefits:
- Higher success rates per cycle
- More embryos for transfer and freezing
- Better cost-effectiveness per pregnancy
Best Candidates for Mini-IVF:
Poor responders to high-dose stimulation, patients at high OHSS risk, or those preferring less intensive treatment.
Trade-off:
Mini-IVF is gentler but typically requires more cycles to achieve pregnancy compared to conventional IVF's higher per-cycle success rates.