An ectopic pregnancy is a pregnancy that occurs outside the uterus. The most common place for this to happen is in the Fallopian tubes and it impedes progress of the pregnancy.
In vitro fertilisation was traditionally believed to potentially increase the risk of this pathology.
A study published in the Fertility and Sterility journal covered this subject in detail and, further […]
During assisted reproduction treatment, the ova and spermatozoa need to be transported to a laboratory where they are united using one of two methods: conventional in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI).
During IVF, ova and spermatozoa are brought into close contact so that a spermatozoon can penetrate the ovule ‘naturally’ and generate fertilisation. It is a mainly […]
One of the common concerns that women who are about to embark on in vitro fertilisation treatment have is the hypothetical risk of getting gynaecological cancer as a side effect of hormone stimulation.
Since in vitro fertilisation began, a number of different studies have been published that indicate that the risk of getting breast cancer, cancer of the ovaries, the […]
What can we see in ultrasound scans: follicles or oocytes?
Artificial insemination, Assisted reproduction, Fertility, Gynaecology, Implantation failure and recurrent miscarriage, In vitro fertilisation (IVF), News, Poor Ovarian Response Unit, Pregnancy, Reproductive biology, Women’s healthMistaking ovarian follicles for oocytes is one of the most common errors made by patients.
During ovarian stimulation, whether this is for regulating ovulation for insemination or for in vitro fertilisation, patients are administered different types of medicines depending on each case. However, there is one common aim: predicting and causing ovulation. This can be just once for patients attempting managed sexual intercourse and […]
Ova and spermatozoa are needed in order to be able to perform in vitro fertilisation treatment. They are taken to the in vitro fertilisation laboratory so that, once they have been appropriately prepared, they can be joined together and fertilise.
Unfortunately, biology is not an exact science and the uniting a spermatozoon and an ovum does not always create an […]
The miracle of conception involves an intimate union between the ova and spermatozoon, appropriate evolution of the fertilised embryo and, furthermore, an ideal environment inside the uterus so that implantation can take place. Whilst this process might seem simple, it is much more complex than we might think, particularly in human beings. Only 30% of our conceptions end in […]
Culture mediums used during embryo development in in vitro fertilisation (IVF) laboratories are crucial to the exit of assisted reproduction treatment of any kind. Culture mediums have the mission of reproducing the physiological conditions inside the female reproductive system as closely as possible, embracing fertilisation up until embryo implantation in the endometrium.
In order for implantation to take place during […]
The risk of contracting HIV during unprotected sexual intercourse is estimated to be between 0.5 and 1%. For serodiscordant couples (one partner is a carrier), trying for a child naturally can entail an elevated risk of transmission. In cases such as these, assisted reproduction techniques are an excellent choice for getting pregnant without the risk […]
When an oocyte is in an optimum state of maturation, ovulation takes place. This is known as day 0 of development (D0) and fertilisation by a competent spermatozoon must take place during this period.
When the oocyte is fertilised, it is then known as a zygote and
we are now on D1 of development. Certain characteristics and essential
structures need […]
Embryo fragmentation is a phenomenon that takes place in most embryos and its origin is not entirely clear. Some studies would seem to suggest that the fragments come from cell remains that have no nucleus or that they are the result of the decomposition of one or more cells from the embryo itself. The oocyte plays the most important role in fragmentation. Poor oocyte quality can lead to embryos that are highly fragmented. Embryo quality is determined by several characteristics such as the number of cells, their size or if the cell interior has an abnormality of any kind such as granularity or vacuolisation. However, one of the factors that has most impact on embryo quality is the extent of fragmentation. Based on the amount, in percentage, of space that it occupies, fragmentation is categorised into 4 types or degrees. […]
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