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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Will The Increased Level Of TSH Affect Fetus?

hi I am 17 weeks pregnant now.When i was tested for Tsh in 13th week it was 9.15uIU/ml(N.R-0.37-6.0)& normal T3 226.49ng/ml(N.R-70-204) ,T4 9.3ug/dl(4.6-12.5)levels.But i was not adviced to use any medicine.Will the increased levels of Tsh effect the foetus?
Tue, 19 Jan 2016
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OBGYN,  's  Response
Hi there,
A TSH of 9 in the 13th week is high and should be around 2.5 uIU.
You need to start taking thyroid supplements after consultation with a endocrinologist. Do so as soon as possible.
Though the threshold of hypothyroidism is 5 in non-pregnant women it is further lowered to less than 2.5 in the 2nd trimester of pregnancy , and 9uIU is way too high. You need to take the supplements.
Also regular monitor of TSH during pregnancy will be required.
The increased TSH can have some effects on pregnancy like increased chances of preterm labour, small for gestational age.Also delivery events can be more complicated in women with hypothyroidism , and they tend to have a higher chance of caesarean delivery and post delivery bleeding.
Taking TSH can help avert these problems.
Also some doctors believe that hypothyroidism in pregnancy can affect the optimal development of the baby and can cause problems in learning.
Do get on the thyroid medications soon.
Hope this helps.
Regards.
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Will The Increased Level Of TSH Affect Fetus?

Hi there, A TSH of 9 in the 13th week is high and should be around 2.5 uIU. You need to start taking thyroid supplements after consultation with a endocrinologist. Do so as soon as possible. Though the threshold of hypothyroidism is 5 in non-pregnant women it is further lowered to less than 2.5 in the 2nd trimester of pregnancy , and 9uIU is way too high. You need to take the supplements. Also regular monitor of TSH during pregnancy will be required. The increased TSH can have some effects on pregnancy like increased chances of preterm labour, small for gestational age.Also delivery events can be more complicated in women with hypothyroidism , and they tend to have a higher chance of caesarean delivery and post delivery bleeding. Taking TSH can help avert these problems. Also some doctors believe that hypothyroidism in pregnancy can affect the optimal development of the baby and can cause problems in learning. Do get on the thyroid medications soon. Hope this helps. Regards.