| A gradual interest has been raised in medical | | | | Subsequent to extended annotations about children |
| community to the thyroid deficits in pregnant woman | | | | with congenital hypothyroidism born in regions with |
| and the upcoming neuropsychological development of | | | | prevalent goiter, an essential task of maternal thyroid |
| her baby. | | | | function was assumed; therefore it is of the most |
| Such topic represents a very significant problem that | | | | significance to find out relevant data about the prenatal |
| has, unluckily, been rather understood in a wrong way | | | | record of all backward children and to study the |
| many times. Even discontinuing thyroid hormone | | | | mother for thyroid deficiency. |
| treatment by women discovering they were pregnant, | | | | At present is currently argued the likelihood of keeping |
| a number of them following a recommendation from | | | | away from potentially avoidable changes of |
| their doctors, and others as a consequence of fear for | | | | neuropsychological development by testing pregnant |
| the possible dangerous result of thyroid medicines on | | | | women for maternal thyroid hormone insufficiencies. |
| the fetus. | | | | Approximately 40 years ago information was |
| Scarcity in thyroid hormones, plus the birth of children | | | | accessible that suggested the incapacity of the |
| with congenital hypothyroidism, are permanent cost of | | | | pregnant women to augment their little circulating |
| the iodine deficiency and can simply be blocked within | | | | thyroxine and this fact was causally associated to the |
| the earliest months of development with a sufficient | | | | birth of children with congenital hypothyroidism. |
| provision of iodine. Such discovery is in conformity with | | | | Subsequently, several teams of medical researchers |
| the extremely early growth of nervous system | | | | offered persuasive proof that hypothyroxinemia in the |
| formation that is typically injured in neurological | | | | mother early in pregnancy is not only the origin of |
| cretinism. | | | | reproductive malfunction and the birth of neurological |
| It is very important to elucidate whether the main issue | | | | cretins, but too of mild cerebral insufficiencies that |
| producing inferior neurodevelopment of the infant is: 1) | | | | involve a great quantity of the actually healthy people |
| maternal hypothyroidism; or 2) maternal | | | | of the identical region. |
| hypothyroxinemia. | | | | There are also other two results very significant |
| Significant knowledge acquired from basic science, | | | | specifically, that the motor and cognitive injury of the |
| clinical and epidemiological studies robustly propose | | | | offspring was linked with the level of hypothyroxinemia |
| that thyroid status of the mother, particularly in near the | | | | of the mother, and not with levels of triiodotironine or |
| beginning of pregnancy, is directly associated to the | | | | TSH in blood; and that the women with this deficiency |
| survival and neuropsychological development of the | | | | do not show signs and symptoms of hypothyroidism, |
| progeny. | | | | due their normal circulating T3. |