In vitro fertilization

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This research is intended to present the different steps that occur in vitro fertilization, the Pro and cons, as well as the denial of our country about this.


Objective of this work is to develop new knowledge on the subject of in vitro fertilization, since in our country it is prohibited to practice in vitro fertilization.Justification

They chose this topic item because want to learn about


There are many marriages that cannot have children, and the legal methods or accepted by the Costa Rican legislation, have not provided the expected results.


What is In Vitro?

In Vitro literally means in glass, indicating that fertilization takes place in the laboratory, in a capsule that was once glass, andfertilization is extracorporeal (outside the body).


What is In Vitro Fertilization?

It is a technique in which fertilization of the oocyte by the sperm takes place outside the mother's body, is also the main treatment for infertility when other methods of assisted reproduction have not been successful.
The process involves the hormonal control of the ovulatory process, removing theoocytes from the maternal ovaries, to allow them to be fertilized by sperm in a liquid medium. The fertilized egg (zygote) is then transferred into the uterus of the female with the intention of initiating a pregnancy.


Ovarian stimulation: is initiated on the third day of menstruation and consist of a regimen of medication to stimulate the development of multiple follicles inthe ovaries. In most patients gonadotropin injections are used normally requires 10 days of injections

Pasos para realizar la Fertilización in Vitro (IVF):

1. Ovarian suppression: treatment with the use of oral contraceptive pills (pills). This allows women to have complete control of ovulation.

2. Ovulation Induction: using 'fertility drugs' which are supplied dailyinjections, usually for 8-10 days results in the development of multiple eggs, is continuous monitoring during the stimulation cycle. Blood tests are used to measure estradiol levels and ultrasound examinations of the ovaries to determine the number and maturity of the eggs.

3. Egg Collection: these are removed from the ovaries using transvaginal ultrasound guides, is carried out through the backwall of the vagina. All follicles are extracted and separated from the liquid egg follicles. This procedure is performed under sedation administered intravenously by an anesthesiologist to be no pain during this short procedure.

4. Insemination, fertilization and embryo culture: The sperm is collected from the male partner on the day of egg collection prepared Sperm and eggs are placedtogether in a highly specialized embryo culture in a controlled environment and observed periodically for the following 18-24 hours. The fertilized eggs are now called embryos. At that time the embryo is usually divided into 8 cells, depending on the quality and progression of the embryos, a decision will be determined by the physician and patient about whether the embryos are transferred on the thirdday or is continued incubation period until the transfer blastocyst on day 5 or 6.

5. Intracytoplasmic sperm injection (ICSI): a single sperm is injected into each mature egg. This allows couples who otherwise could not achieve fertilization have the same chance of success than other couples doing it through the IVF procedure.

6. Blastocyst culture: This is the period in which the embryonormally implants. The transfer of 2 blastocysts on day 5 or 6 give similar or better rate of pregnancy that the transfer of 3-4 embryos on day three, and with less risk of multiple implantations.

7. Assisted hatching: The embryo is contained within a structure called the zona pellucida soft shell for the first five to six days of its existence. To be implanted in the uterus, the embryo...
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