ICSI (Intra Cytoplasmic Sperm Injection):
This microsurgical treatment is used as a complement for traditional in vitro fertilization when the sperm is too few or when they are too weak to penetrate the oocyte by their own means.It consists in choosing the most suitable sperm and injecting one of them in each one of the collected oocytes.
In which cases is ICSI used?
- Obstructed Fallopian tubes
- Male deficiencies
- Endometriosis
- Immunological disorders
- Infertility due to unknown factors
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What does ICSI (Intra Cytoplasmic Sperm Injection) do?
The assisted fertilization treatments in which the process known as ICSI is used are the same as those in which plain in vitro fertilization is used, except for one thing: whereas in the latter procedure the sperm are placed in a laboratory container for them to swim to the oocyte and penetrate it by their own means, ICSI consists in injecting a sperm directly inside each oocyte and leaving them in a laboratory container for the fertilization to complete its process.
The rest of the stages, from the preparations prior to the fertilization to the embryo implantation, are the same in ICSI and in traditional in vitro fertilization and, in both cases, within 24 hours, the oocytes are examined to see if the first signs of fertilization have appeared: small spheres inside the oocyte, the male and female pronucleous.
ICSI is a procedure used when there are male deficiencies that result in the production of weak or too few sperm. In some severe cases, this deficiency is so significant that a single ejaculation is not enough for collecting the necessary number of sperm and it becomes necessary to collect the sperm that remains inside the testicles, in the vas deferens or in the epididymis. The sperm is collected by complementary procedures of puncture and suction.