About ibernabeu_internacional

This author has not yet filled in any details.
So far ibernabeu_internacional has created 110 blog entries.

Can I choose the sex of my embryos when I undergo embryo transfer?

The human genome consists of 46 chromosomes: 23 of these are inherited from our father and the other 23 are inherited from our mother. Our organism’s entire genetic make-up is stored in these chromosomes. The 23 pairs are organised as follows: 22 pairs, known as autosomes, and one pair of sex chromosomes (X and Y) which differentiate the two sexes (XY for males and XX for females).
From a technical point of view, using pre-implantation genetic diagnosis, we have the means of analysing an embryo’s entire chromosomal make-up. This technique, which is known as PGS/PGT-A/CCS (Comprehensive Chromosome Screening), means additional or a lack of any chromosomes in the embryo can be detected. Therefore, we can use PGS/PGT-A/CCS to analyse the entire make-up of the embryo and determine that there are neither DNA excesses nor deficiencies which will stop the embryo from developing properly. But, if we focus on the sex chromosomes, we can also determine if the analysed embryo has two X chromosomes and will, therefore, be a girl (XX) or one X chromosome and one Y chromosome (XY) and will be a boy. […]

2018-03-26T19:17:10+02:0029 de July de 2016|0 Comments

Reduced mobility and fertility

Reproduction issues always need to be dealt with with a degree of sensitivity. When there is also a disability within the couple, the emotional side of things calls for even greater care and steps should be taken in order to deal adequately with any implications the disability in question has from a medical point of view.
In 2006, the United Nations (UN) published guidelines on the rights of people with reduced mobility. These guidelines indicate disabled people’s rights across all levels of society and include the right to have children and access to sexual health.
At Instituto Bernabeu, we aim to comply with the aforementioned guidelines and provide our patients with the means and solutions they need and which adapt to the circumstances of each physical disability. This covers disabilities resulting from a genetic condition (hereditary), disease or an accident and, from a fertility point of view, each case is given personalised treatment. […]

2016-08-04T12:57:51+02:008 de July de 2016|0 Comments

Beta hCG (β-hCG) result table

ACCESS INFORMATION PRIOR TO THIS POST ON BETA
β-hCG (human chorionic gonadotropin) is a glycoprotein that is initially secreted by trophoblast cells in the embryo shortly after it implants in the uterus. The rapid increase in serum levels of hCG following conception means it is an excellent early indicator of pregnancy. It’s also a parameter which is widely used for monitoring that a pregnancy is progressing correctly.
On a physiological level, hCG triggers the corpus luteum and thus facilitates progesterone and oestrogen synthesis. Progesterone stimulates the maturing of blood and capillary vessels that help the foetus to develop correctly.
hCG levels can be measured in blood or in urine.
Urine tests have a detection limit of 20 to 100 mUI/ml depending on the brand. If the measurement is to be taken in urine, a sample of the first urine of the day is recommended. This is particularly true during the early days of pregnancy because, if the urine is too diluted, the test can return incorrect negative results.
hCG levels in blood can be used to detect levels as low as 5 mUI/ml and the concentration levels of the hormone can therefore be calculated.
hCG levels in multiple pregnancies are 30-50 % higher than in pregnancies where there is only one foetus. However, a multiple pregnancy should be confirmed by means of an ultrasound.
[…]

2016-08-04T12:59:04+02:0017 de June de 2016|1 Comment

Vasectomies: the male contraceptive

Vasectomies are the most reliable method of male contraception and an estimated 40 to 60 million men worldwide have chosen to have one.  They are the most widely used contraceptive method for men looking to achieve permanent sterility for family planning or personal reasons.
The procedure should be thought of as irreversible. It has a low complications rate and failure is very infrequent. A vasectomy does not begin to work immediately and couples need to continue to use contraceptives until absolute sterility has been achieved. Vasectomies are safe and do not have any side effects or cause serious illness in the long term. It is a method that is used for avoiding pregnancy in long standing relationships but also as a personal sterility method in men who are not in a relationship (those who have separated, divorcees or widowers) but who do have sexual intercourse or, even when they are in a relationship, do not wish to have more children. […]

2016-08-04T13:00:49+02:0010 de June de 2016|0 Comments

Diagnostic hysteroscopy and endometrial scratching

We consider an evaluation of the uterine cavity and a check to ensure normal structure in the tissue that lines it (the endometrium) to be a standard part of any implantation failure study. In order to carry out such a study, the most appropriate diagnosis consists of a diagnostic hysteroscopy and an endometrial biopsy.
A hysteroscopy is an endoscopy of the uterus. In other words, direct inspection of the uterine cavity using an optical system. It’s a simple test and practically pain free in most cases. Therefore, it is generally carried out during an appointment with minimal patient preparation and no impact on her daily life. […]

2018-02-02T10:42:00+02:003 de June de 2016|0 Comments

Ovarian stimulation: What is it? Are there any risks involved?

During the first few days of a period, a complex process takes place in the ovaries. The first step is to gather and initiate development in several follicles that contain eggs. Following this, only one egg is selected and it then develops. A mature egg is released during ovulation.
[…]

2016-05-26T17:43:17+02:0027 de May de 2016|0 Comments

The immune system and pregnancy

Numerous factors are involved in making the amazing miracle of pregnancy possible. Many of them are very well understood whilst others, such as the immune system and its role in embryo implantation, given their importance, are still being studied and researched in depth. If the immune system is what protects the body against infection and diseases thanks to its defences, what role does it play in achieving pregnancy? […]

2016-08-04T13:06:25+02:0020 de May de 2016|0 Comments

Obesity and embryo implantation failure

It has long been known that patients who are overweight face increased reproduction and pregnancy loss issues.
Issues achieving a successful pregnancy are even greater if, as well as being obese, the patient also has illnesses such as diabetes, thyroid issues or other metabolic disorders (refer to further information on endocrinology and pregnancy).
However, little was known about the direct effect of obesity on endometrial receptivity and successful or unsuccessful embryo implantation. […]

2016-10-13T12:26:59+02:006 de May de 2016|0 Comments

Hyperprolactinaemia: excess of prolactin and fertility

Prolactin is a hormone that is produced by the   pituitary gland and although it also forms part of the   stress hormone circuit, it plays a vital role in breast development during pregnancy and the production of breast milk after giving birth.
Abnormally high levels of prolactin, which is referred to as hyperprolactinemia, causes disruptions in the normal menstrual cycle, anovulatory cycles, infertility and the   production and spontaneous flow of breast milk in women who are not pregnant or breastfeeding a baby. […]

2016-08-04T13:07:49+02:0029 de April de 2016|0 Comments

Calculating ovulation: the best time to get pregnant

One of the most frequently asked questions among couples is how to calculate the most fertile days of the cycle and when ovulation will take place in order to make this coincide with sexual intercourse. Calculating it is simple in the case of regular, 28-day cycles. […]

2016-08-04T13:08:32+02:0022 de April de 2016|0 Comments
Do you need help?