The risk of miscarriage during fertility treatment
Up to 25% of all natural pregnancies end in miscarriage. The majority of these pregnancies end so early in the pregnancy that many women do not notice that they were pregnant.
The risk of miscarriage during IVF or in connection with ICSI is approximately the same. The reason is that average age of women undergoing IVF is often than higher than that of women conceive naturally.
Causes of miscarriage
It is assumed that miscarriages occur because a fault has occurred in the initial division of the fertilised egg. Chromosomal abnormalities are one of the commonest known causes of miscarriage. That means that the number or structure of chromosomes deviate from what is normal in the fertilised egg.
The risk of anomalies increases significantly with age. The woman’s age is a very significant factor in miscarriage. If a woman is more than 35, the risk of miscarriage increases.
The following five factors may be the cause of repeated miscarriages:
1. A hormonal imbalance
A woman’s menstrual cycle is controlled by hormones. A hormonal imbalance can result in repeated miscarriages. For example, many women have PCO (polycystic ovaries), which is one of the more common hormonal disorders.
2. The immune system overacts
In rare cases, miscarriage is due to immunological problems. That means that the woman’s immune system incorrectly defends itself against the fertilised egg. The embryo is registered as a foreign body and is rejected.
3. Malformations and myomas
The growth of the embryo can be impaired if the woman has malformations or myomas in her womb. These significantly increase the risk of a miscarriage. Women with abnormalities of their wombs (i.e. myomas or anatomical faults) often have difficulty becoming pregnant as fertility is significantly reduced.
4. Increased risk of blood clots (prone to thrombosis)
In women who have an increased risk of developing blood clots, there may be problems with blood flow in the placenta (the afterbirth). Miscarriage can be caused by insufficient blood flow to the foetus.
5. Unhealthy lifestyle
An unhealthy lifestyle, smoking and/or passive smoking as well as the use of medicine can increase the risk of miscarriage.
Creating a person is a complicated process, so even though the diagnostics are advanced, we may encounter situations where we are unable to find the cause of repeated miscarriages.
Based on the diagnostics available to us, our doctors’ focus is on your capabilities and possible limitations during fertility treatment and will advise you which treatment they recommend. If you have had repeated miscarriages following naturally occurring pregnancies, fertility treatment may be a solution if the diagnostics show an unambiguous result.