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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Having Hypothyroid, Pregnant. Did Low Dosage Affect Brain Development Of Fetus?

Hi,
iam having hypothyroid since 2yrs with dosage of75mcg but doctor adviced me to take 62.5mcg and very soon i was pregnant.Now iam 11 weeks pregnant and my tsh is 19 now,so doctor adviced me to increase the dosage to 75mcg.but i heard that high thyroid level shows lower iq levels of my featus.so since i didnot increase the dose for my first 11 weeks pregnancy.Did my low dosage affect my babys brain development?
Fri, 11 Oct 2013
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OBGYN,  's  Response
Hi,
During pregnancy the dosage of thyroxine is usually increased by 30-50%; the intention is to maintain a TSH level of 2.5mIU/l in early pregnancy and 3mIU/l in late pregnancy. Preterm birth, growth retardation, neonatal respiratory distress are some of the complications that can happen when the defect is uncorrected. Please follow your doctor's instructions and maintain a euthyroid state to avoid any complications. Brain development is not affected by hypothyroidism. Hope your query is clarified. Wish you safe motherhood.
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Having Hypothyroid, Pregnant. Did Low Dosage Affect Brain Development Of Fetus?

Hi, During pregnancy the dosage of thyroxine is usually increased by 30-50%; the intention is to maintain a TSH level of 2.5mIU/l in early pregnancy and 3mIU/l in late pregnancy. Preterm birth, growth retardation, neonatal respiratory distress are some of the complications that can happen when the defect is uncorrected. Please follow your doctor s instructions and maintain a euthyroid state to avoid any complications. Brain development is not affected by hypothyroidism. Hope your query is clarified. Wish you safe motherhood.