Treatment of hyperthyroidism in pregnancy

Treatment of hyperthyroidism in pregnancy

Uncontrolled hyperthyroidism during pregnancy causes many problems for the mother and the fetus.
Some of these problems include abortion, childbirth, and limitation of fetus growth within the uterus. But with timely control of the thyroid function, these complications can be successfully controlled.

It is recommended that people with thyroid dysfunction, regularly manage problems like menstrual disorders, type 1 diabetes, and infertility problems.
Besides, thyroid testing in pregnancy is recommended for women with a family history of thyroid, goiter, and diabetes insulin-dependent.

Pregnant women with a history of thyroid therapy, or a child with thyroid disease, should be tested at the first referral before delivery.
Thyroid abnormalities in the mother may even impair thyroid function.

Graves’ disease is one of the most common causes of hyperthyroidism during pregnancy. This disease is often diagnosed in women with a history of hyperthyroidism. Women with Graves’ disease should be treated before they are pregnant.



One of the main treatments for hyperthyroidism during pregnancy is the use of Antithyroid drugs. But it’s better to take this medicine according to your doctor. The dose of the drugs may be changed by your doctor.

Some factors during pregnancy, including nausea and vomiting may cause hyperthyroidism. Because this problem is resolved at weeks 14 to 18 of pregnancy, there is no need to with anti-thyroid drugs.

The usual drug for treating hyperthyroidism in the first trimester of pregnancy is propylthiouracil (PTU). Another drugs is methimazole; But taking this drug early in pregnancy may cause fetal defects.
Women who cannot tolerate PTU may need to use methimazole in the first trimester of pregnancy.

Also, PTU can severely damage the liver. Therefore, experts recommend using methimazole instead of PTU after the first trimester.
These drugs have the same effect on hyperthyroidism. Talk about your any use these drugs with your doctor.

Some women may need surgery to remove a part of their thyroid gland. The second trimester of pregnancy is the best time for surgery during pregnancy.

Radioactive iodine treatment is not suitable for pregnant women. It usually destroys the patient’s thyroid gland and can also damage the baby’s thyroid. It is also better for lactating women not to take this treatment.

The thyroid may be activated after delivery. But inflammation may cause hypothyroidism. Most of the time, these problems are solved over time.

To detect hyperthyroidism, it is advisable for women to be examined by a doctor before pregnancy. The doctor prescribes tests to measure thyroid hormone levels.
Low levels of TSH and high T4 levels indicate hyperthyroidism. The radioactive iodine test is one of the other tests to check this problem.

Besides, it’s better to delay pregnancy if you have active Graves’ disease to control the disease. Also you can wait 6 to 12 months and then get pregnant if you are treated with radioactive iodine.


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