Today it has become the converging point of all reproductive failure which has not been initially resolved more easily with the treatments described above.

The chances of success with ICSI are the same as with conventional IVF. However, it is important to take into account that couples undergoing ICSI have a much more serious primary problem: difficulty to achieve fertilization using the man’s sperm.

1. Oocyte collection. The collection is performed by means of ultrasound-guided transvaginal puncture under anesthesia.

2. Insemination. Once the oocytes have been obtained, a sperm sample is required. The oocytes are placed together with previously treated and selected sperm.

3. Embryo in Vitro Culture. The embryos usually remain in the culture medium for 2-3 days altogether. In some cases until they reach a stage called blastocyst.

4. Embryo transfer. The uterine transfer is performed through the cervical os and does not require anesthesia. 2 to 3 embryos are usually transferred.

5. Embryo freezing and thawing. In certain cases the remaining viable embryos are subjected to a freezing process in order to preserve them for some time. If no pregnancy has been achieved or once it has come to an end, any surviving embryos can be thawed and transferred.

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