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Hypothyroidism is common in pregnancy with an estimated prevalence of 2-3% and 0.3-0.5% for subclinical and overt hypothyroidism respectively. [8] Endemic iodine deficiency accounts for most hypothyroidism in pregnant women worldwide while chronic autoimmune thyroiditis is the most common cause of hypothyroidism in iodine sufficient parts of the world.
[8] [60] [59] [61] Nonetheless, high maternal FT4 levels during pregnancy have been associated with impaired brain developmental outcomes of the offspring and this was independent of hCG levels. [62] Propylthiouracil is the preferred antithyroid medication in the 1st trimester of pregnancy as it is less teratogenic than methimazole. [8]
Thyroid hormone is vital during pregnancy. The unborn baby's brain and nervous system need thyroid hormone to develop. During the first trimester, the baby depends on the mother's supply of thyroid hormone. At 10 to 12 weeks of pregnancy, the baby's thyroid begins to work on its own. But the baby still depends on the mother for iodine, which ...
Universal screening for thyroid diseases during pregnancy is controversial, however, one study "supports the potential benefit of universal screening". [127] Pregnant women may have antithyroid antibodies (5%–14% of pregnancies [ 15 ] ), poor thyroid function resulting in hypothyroidism, or both.
Thyroid disease is a medical condition that affects the structure and/or function of the thyroid gland.The thyroid gland is located at the front of the neck and produces thyroid hormones [1] that travel through the blood to help regulate many other organs, meaning that it is an endocrine organ.
Illustration of fundal height at various points during pregnancy. Some degree of weight gain is expected during pregnancy. The enlarging uterus, growing fetus, placenta, amniotic fluid, normal increase in body fat, and increase in water retention all contribute weight gain during pregnancy. The amount of weight gain can vary from 5 pounds (2.3 ...
The gland is usually larger in women than in men, and increases in size during pregnancy. [4] [5] The thyroid is near the front of the neck, lying against and around the front of the larynx and trachea. [4] The thyroid cartilage and cricoid cartilage lie just above the gland, below the Adam's apple.
Transvaginal scans usually provide clearer pictures during early pregnancy and in obese women. Also used is Doppler sonography which detects the heartbeat of the fetus. Doppler sonography can be used to evaluate the pulsations in the fetal heart and bloods vessels for signs of abnormalities. [5]