In Vitro Fertilization (IVF)

It is the most effective treatment for infertility. In IVF several follicles grow simultaneously as a result of hormone therapy. Several oocytes (eggs) are then collected and fertilized with sperm in the laboratory. Two or occasionally three embryos are then transferred into the womb and the remaining good quality embryos can be cryopreserved for later use.

To do in vitro fertilization the woman needs some preparation with a hormonal treatment so that mutiple folicules grow simultaneously and this allows us to obtain ovocytes.

When is IVF recommended

  1. When unexplainable infertility has been diagnosed
  2. When the fallopian tubes have a blockage
  3. When Intrauterine insemination has failed
  4. When the male partner has a problem in the sperm quality.

Procedure of IVF Treatment

IVF cycles consist of several stages over a period of 2-3 weeks. The procedure is as follows:


  1. OVARIC STIMULATIONFases de tratamiento FIV - IVF treatment phases

    • The female partner takes a hormone medication to stimulate the ovaries so that they produce several eggs per cycle.
    • Her progress is monitored by ultrasound scans to see the evolution and growth of ovocytes.
    • She will have one or two blood tests to control Oestrodial and verify egg maturity.

    • Once the Reproduction specialist decides that the eggs are mature enough, they will be collected under anaesthetic sedation.
    • The extraction is performed using vaginal ultrasound guidance
    • The procedure lasts no longer than 15 minutes
    • This same day, a sperm sample is collected from the male partner

    • In the laboratory the eggs are placed with the sperm in laboratory dishes and in incubators, creating an appropriate atmosphere for fertilization and embryo growth. The rate of fertilization is approximately 85%
    • The embryos are monitorized by the embriologist assuring a correct embrionary development during 3 to 5 days

    • Between day three and day six after egg collection. Maximum two embryos are transferred, the remaining ones are cryopreserved for a later use
    • The embryos will be transferred vaginally into the uterine cavity using a catheter
    • Patients are advised to rest during the next 24 hours

    • The embryos that are not transfered are cryopreserved for a later use

    • Approximately 7 or 12 days after the transfer, the patient is requested to do a blood or urine test to confirm the outcome of the treatment

Pregnancy rates

The rate of successful pregnancies is 67%. Please, notice that this rate can vary depending on age, egg, and semen or embryo quality.