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In Spain, the age limit is 50 years (up to one day before the age of 50). However, for women over 45 years of age, the recommendation is usually to use donor eggs due to the decrease in oocyte quality.

In cases where the quality of the eggs is low or the woman is in menopause, the most effective option is receiving donor oocytes. Eggs from young donors are of high quality, which translates into higher success rates in each transfer.

Generally, a blood test and a semen analysis are required if the male partner provides the sperm. In addition, ultrasounds are required to assess the case and define the best approach to treatment. At our clinic, each plan is completely personalized.

After assessing the patient’s recovery, a new endometrial stimulation or preparation can be restarted in the next cycle. There are no significant differences between resting or starting a consecutive IVF cycle, and each woman can decide what is best for her based on how she feels.

In AI, if ovarian stimulation is used, there is a possibility of ovulating two eggs and therefore a twin pregnancy. In IVF, in most cases, only one embryo is transferred and the remaining ones are frozen, which minimises the risk of multiple pregnancy.

Egg vitrification is aimed at women who wish to postpone childbearing for personal, social or medical reasons. Embryo freezing, on the other hand, is usually performed to preserve surplus embryos from an IVF cycle, allowing them to be used in the future. Both methods are safe and effective.

Although technically possible through PGT-A, sex selection is illegal in Spain. During the transfer of an analysed embryo, neither the medical team nor the patients know the sex of the embryo.

The number of eggs depends on the patient’s ovarian reserve and the medication used. In women with low reserve, between 2 and 6 eggs are extracted, while those with high reserve can produce more than 15. Stimulation must be prescribed individually and precisely.

There is no scientific evidence to support that rest improves the results after the transfer. However, we usually recommend that the patient rests for a few minutes for peace of mind.

En la estimulación ovárica se usan gonadotropinas, fármacos seguros similares a las hormonas naturales, aunque en dosis mayores. Los efectos secundarios pueden incluir turgencia mamaria, distensión abdominal o cansancio, y suelen ser leves.

Ovarian puncture is performed under sedation, so the patient does not feel pain during the procedure. Afterwards, she may experience mild discomfort similar to that of a menstrual cycle.

Traditionally, embryo morphology was assessed using a microscope. Nowadays, advanced techniques such as PGT-A, genetic diagnosis in culture medium and scoring with artificial intelligence (Aida Score) allow the optimal embryo to be selected for transfer.

Yes, embryo transfers can be performed in a natural cycle in women with regular cycles. Each case must be evaluated individually to choose the option that offers the highest success rates.

Since current freezing techniques are very safe and selection methods are precise, it is recommended to transfer a single embryo to minimize the risk of multiple pregnancy.

If pregnancy is not achieved on the first attempt, we recommend performing a new transfer of a cryopreserved embryo from the same cycle. If frozen embryos are not available, a new stimulation and IVF cycle should be started.

In this case, the doctor will assess the severity and propose the most appropriate treatment, which could be artificial insemination, IVF with ICSI, IVF with testicular biopsy and ICSI, or, ultimately, the use of donor sperm.

Ovum donation is usually recommended for women who have established menopause or those with insufficient ovarian reserve.

PGT-A is performed at the blastocyst stage, usually 5 to 7 days after fertilization. Results are available 10 to 12 days after the test.

Surplus embryos are kept frozen at the clinic for future pregnancy attempts or for having additional offspring in the future.

Thanks to treatment personalization strategies and embryo vitrification, the risk of Ovarian Hyperstimulation Syndrome (OHSS) has decreased considerably, and is now a residual risk.

PGT-A is recommended for patients at higher risk of aneuploidies, such as women over 37 years of age, although it may also benefit other groups. Consult with our professionals if you think it may be useful in your case.

In case of difficulty in obtaining the sample, we offer support strategies and, if necessary, pre-sperm preservation methods to avoid inconveniences on the day of the procedure.