Archive for the 'Assisted reproduction' category

Assited Reproduction Techniques: FIV vs ICSI

01 Currently there are two main techniques used to achieve Assisted Reproduction IVF. These two techniques are conventional in vitro fertilization (IVF), and intracytoplasmic sperm injection (ICSI). Continue Reading »

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Why not all embryos obtain from a cycle of in vitro fertilization are suitable for freezing?

01 Today, in In Vitro fertilization treatments, it is not extraordinary to find ourselves on the day of embryo transfer with a high number of good quality embryos. For a fresh transfer we shall be electing the embryo or embryos that morphologically and kinetically demonstrate greater development and ‘the other’ good quality ones can be cryopreserved. Continue Reading »

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Embryo normal and abnormal division

01 Since we can remember, we must assume that we belong to described canons. These canons are set based on an average population, such us; children in pediatric check-ups are asses by a percentile of height and weight. As adults we are asses around the body mass index. In both cases, we try to reach an “average” rate.

What we consider average?

This also happens at embryonic stage. The process of embryo division observation is established to assess whether or not embryos are normal. This observation should be performed in specific times, so each embryo is observed and evaluated daily.

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Criteria for embryo classification

01From fertilization and until the embryo transfer takes place in the womb, embryos follow a development that is valued by embryologists daily. Those embryos that have kept a correct evolution and are in better condition are selected to be transferred. Continue Reading »

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How many eggs on average are donated on an Egg Donation treatment at Instituto Bernabeu?

01 In Spain, we performed 40% of all egg donation cycles in Europe. The experience accumulated at Instituto Bernabeu for over 15 years, allows us to offer to our patients a high quality and personalized treatment.

When a patient decides to go for an Egg Donation treatment, a chain work is set in the organization, in which we guarantee a commitment of trust, reliability and professional quality.

Why an “x” number of eggs are donated? Why not only one?

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Semen quality parameters according to the World Health Organisation (WHO)

01The spermiogram is a basic tool that provides us with some of the best information to assess male fertility. It is also very useful in order to formulate a personalized treatment plan for the couple.

The World Health Organisation (WHO) has published several editions of the “Manual for the Examination of Human Semen and Sperm-Cervical Mucus Interaction”, the last one in 2010. Those manuals help and guide andrology laboratories to determine sperm quality. Moreover, in recent years, the European Society for Human Reproduction and Embriology (ESHRE) in collaboration with the WHO have developed a program to improve standardization between laboratories in terms of sperm sample diagnosis and assessment criteria. Continue Reading »

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Embryonic arrest, why don’t all of my embryos develop equally?

01.Embrion-Humano-10-celulas_-Dia-3When one starts an in vitro fertilisation (IVF) treatment, one of the most frequent concerns is the number of high quality embryos that can be obtained.

This number is variable and depends on several factors such as the ovarian reserve and gamete quality (egg and sperm). Once the eggs are fertilised, they are considered embryos, which begins after their early division. The embryo division is observed in the IVF laboratory on a daily basis and is key information to determine the embryo quality. The Spanish Association of Reproductive Biology (ASEBIR) establishes a classification according to various observed morphological parameters, which indicate the embryo quality according to their capacity to implant in the womb. Continue Reading »

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Contamination, environmental toxins and fertility

Instituto BernabeuScientific evidence from the last 15 years shows that without a doubt, environmental toxins before conception and during pregnancy cause long-lasting effects on reproductive health. An example of this is the exposure to mercury, which causes cognitive impairment in children. Another example is the exposure to agricultural pesticides, which is associated with sperm quality alterations and higher incidence of testicular and prostate cancer for men, and in women it interferes with the development of puberty, ovulation, fertility and menopause. Continue Reading »

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Is it beneficial to rest after the embryo transfer?

reposoWithout a doubt, one of the most emotionally stressful stages a patient undergoing IVF has to face is the period between the embryo transfer and the pregnancy test result.

It is a natural instinct for someone in this situation to want to do everything in her power to increase the chances of success, which is why she is extra sensitive to any messages she receives from family members, friends, the internet, etc. This leads to a confusing situation because oftentimes the advice received is contradictory. As if that weren’t enough, the vast majority is unfounded and not validated by any scientific evidence. Their question is often “should I rest or not?Continue Reading »

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Avoiding multiple pregnancy: Why is it important to avoid pregnancy of twins or triplets?

trillizosMultiple pregnancy is, along with ovarian hyperstimulation, the most significant complication in fertility treatments.

Most couples that go through assisted reproduction techniques consider multiple pregnancies to be desirable or the lesser evil. However, pregnancies of twins and even more so triplets are associated with a series of complications that challenge the pregnancy ending in the birth of a healthy baby. Let us not forget that the birth of a healthy baby is the only objective of assisted reproductive techniques. Continue Reading »

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