Thermal baths, fevers and certain occupations can cause temporary genetic changes in spermatozoa, such as chromatin alterations and aneuploidy.
In the 80s, knowledge on this subject was very limited, and as a precautionary measure, it was accepted to offer an abortion if a pregnancy occurred during thermal therapy or in the first few weeks following its cessation.
Since then, knowledge has evolved. For example, this type of alteration is associated with the use of certain chemotherapies or acne treatments. Certain professions, such as bakers and cooks, which regularly expose the body to heat, also cause these disturbances.
Here are the recommendations we were able to obtain in the context of an unscheduled pregnancy with thermal :
2022 - Member of the Centre de Référence sur les Agents Tératogènes (CRAT) and the Académie Nationale de Médecine (French National Academy of Medicine)
"The risk is highly theoretical, since the development possibilities for eggs carrying chromosomal missegregations are very limited.
There is no need to propose termination of pregnancy, as the risks are very limited. The only thing to consider is prenatal diagnosis specifically designed to detect chromosomal number anomalies (blood marker assays coupled with an early ultrasound scan at 12 weeks' gestation), or even PND if the result is positive or doubtful."
To take this a step further, there's a good chance that even if fertilization occurs, implantation or implantation in the endometrium won't, and the egg will simply be evacuated naturally.
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