Hi and welcome to HCM
During a normal
pregnancy, the following are the
TSH normal ranges for an iodine-sufficient population.
First Trimester: 0.24 - 2.99
Second Trimester: .46-2.95
Third Trimester: .43 - 2.78
Thyroid hormone is critical to normal development of the baby’s brain and nervous system. During the first trimester, the fetus depends on the mother’s supply of thyroid hormone, which comes through the placenta. At around 12 weeks, the baby’s thyroid begins to function on its own.
Hypothyroidism is treated with synthetic thyroid hormone called thyroxine—a medication which is identical to the T4 made by the thyroid. Thyroid function should be checked every 6 to 8 weeks during pregnancy. Synthetic thyroxine is safe and necessary for the well-being of the fetus if the mother has hypothyroidism.
The babies of mothers who were hypothyroid in the first part of pregnancy, then adequately treated, exhibited slower motor development than the babies of normal mothers. Their may be slight impact on developing fetus in your wife case.
Trust your doctor and take treatment as advised.
Regards and all the best
Dr Santosh