Both conventional in vitro fertilization and sperm microinjection are IVF procedures. However, we usually coined the term IVF only to the first and we use the term IVF-ICSI or simply ICSI for the second.
We understand fertilization as the act of union between a sperm and an ovum, thus forming the so-called embryo, which will later develop into a baby. The fact of performing this technique in a laboratory environment with the appropriate conditions is known as in vitro fertilization (in the laboratory).
For this method of assisted reproduction we find two ways of doing this:
- Conventional in vitro fertilization (IVF).
- Intracytoplasmic sperm microinjection (ICSI).
Because the latest studies show a greater effectiveness in the combination of both techniques of artificial fertilization, this mix is beginning to be increasingly used in patients wishing to increase the pregnancy success rate, and is that there are some of the Oocytes that are directly inseminated, and others more mature to which spermatic microinjection is performed.
Differences between IVF and ICSI
Previous study and analysis of the patient and depending on some key aspects such as medical history or the characteristics of both eggs and sperm used in the attempt to fertilize by natural means, experts in reproductive medicine will decide the most effective method To achieve the desired result in the best possible way.
That is why a good analysis should be kept in mind the day of ovarian puncture (extraction of the eggs) in order to determine if the sample extracted meets the parameters established for a correct use and procedure of a conventional in vitro fertilization. Otherwise, if the sample obtained presents a low quality we should opt for the ICSI technique. If good sperm quality is combined with a good ovarian response, the probability of success in pregnancy will be higher.
Fertilization then takes place outside the woman’s body:
- At IVF, egg cells and sperm cells are collected in a petridish. When fertilization was successful, a maximum of three embryos are inserted into the uterus several days later.
- In ICSI, a sperm with a very fine needle is injected directly into an egg cell. In this way, as many oocytes can be fertilized as the woman is to be transferred. In the ICSI, too, a maximum of three embryos are inserted into the uterus.
Why choose conventional in vitro fertilization?
The IVF is based on the union of the ova removed by ovarian puncture with a correct amount of good quality sperm and hold them together for about 24 hours in a space with suitable conditions.
We can decant for conventional IVF because of its ease of use as a less complex assisted reproduction treatment. As a prerequisite we must have a sample of semen of high quality, since this gives us a greater probability of fertilization of the ovule.
Why choose ICSI sperm microinjection?
The ICSI technique tries to introduce a single sperm directly into the ovum by means of microinjection performed with a micro-injector. This treatment is more complex than the IVF since it is required that the oocyte in question is mature and suitable for microinjection, having to eliminate the cells that surround it previously.
The spermatozoid must be chosen correctly, which will be introduced into the oocyte, since it must have good conditions of morphology and mobility in order to have a high probability of fertilization. For this we must select the spermatozoid and immobilize it for its study and management.
Contact Dr. Kedar Ganla for ICSI and IVF treatment.