An assisted reproduction technique allows the formation of embryo in the womb, not in the lab.

With this technique there is no surplus embryos.

• It is an alternative for those who claim moral or ethical reasons with in vitro fertilization

20% of the 600,000 couples in our country does not use in vitro fertilization by ethical or moral grounds. Fertilization outside the womb and the fate of surplus embryos to be morally prevent this technique. However, a "version" shorter in vitro fertilization, to allow these couples to have a more natural pregnancy, because the embryo is formed in the uterus of the woman, not in the lab, and no surplus embryos.

The transfer of gametes, is a technique that is about halfway between the artificial insemination and in vitro fertilization. In artificial insemination the sperm are deposited inside the uterus to penetrate the egg and fertile, but it is a technique with limited results, only achieved a 12% success rate per cycle. In the in vitro fertilization (IVF) fertilization is performed in the laboratory, eggs were extracted by puncture of women through the vagina, and fertility of the male sperm in the laboratory. After a few days, the embryos-usually two, are deposited in the womb. Supernumerary embryos is permitted crioconservan in banks for a maximum of 5 years. It is the technique most commonly used by couples (or single women) with the fertility of either male or female or both (obstruction of the fallopian tubes, endometriosis, male infertility, infertility of unknown origin, changes in ovulation, age ...) The average rate of pregnancy with IVF is approximately 45%.

"With the technical transfer of gametes (the female gamete is the ovum and sperm is the male gamete) what we do is extract the eggs and, within hours, transfer them with sperm to the womb, without waiting for have been fertilized. The embryo is formed inside the woman, "says Dr. Dr. Alfonso de la Fuente, with over 15 years of experience in assisted reproductive technologies and director of the Fertility Institute of Madrid, whose team has achieved successfully perform this technique after an upgrade of its methodology.

Dr. Alfonso de la Fuente.

"The steps are the same as an in vitro fertilization, preparing women through stimulation of ovulation. The purpose is to obtain the development of several follicles, inside which are eggs This process is usually monitored by ultrasound vaginal reporting the number and size of developing follicles.

The eggs are extracted through the puncture and aspiration of ovarian follicles, low vision and vaginal ultrasound. This intervention is usually done on an outpatient basis and requires an anesthetic and sedation during a subsequent observation period varies.

Once the eggs are prepared and graded in the laboratory. Select the most suitable sperm. Grown in the laboratory together under favorable conditions, for a few hours and then be able to transfer sperm to the oocyte 3 uterine cavity, is waiting for the fertilization and embryo implantation.

It is a "more natural, with results not so good as in traditional in vitro fertilization, but higher than in artificial insemination, are around 28-29% success. It is also a more economical technique, on 30-35% less than in vitro fertilization, because the laboratory, the most expensive, is much shorter.

"A few years ago we used a similar technique, but instead of transferring gametes to the uterus, were transferred to the fallopian tube, where fertilization normally occurs in the egg and sperm. It was thought that this would encourage pregnancy but was abandoned because it required a more complex surgical procedure for women and the results were not relevant. "

"This says Dr. Alfonso de la Fuente is an alternative for couples unable to have children and do not accept the conditions posed ethical IVF (frozen embryo extracorporeal fertilization) or who have failed in several attempts in vitro fertilization (repeated failure of implantation). "

80% of pregnancies are achieved in the first three cycles
The factors that determine the likelihood of pregnancy are the cause of infertility, age of the patient, the number of ova obtained and the quality of sperm.

"However, we must bear in mind that not all patients who begin treatment achieved follicular development suitable to be subjected to the puncture, and not all who reach this stage can receive transfer of eggs / sperm, since in some cases failed to obtain eggs or sperm do not have the appropriate conditions. "

The European Institute of Fertility is dedicated exclusively to studying and treating disorders related to reproduction. Is headed by Dr. Alfonso de la Fuente, with over 15 years of experience in this field and has been an associate professor at the Autonomous University of Madrid.
C / General Rodrigo, 6 - 28003 Madrid. Tel: 91 543 99 40 - http://www.iefertilidad.com.