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Re: Can high dosage of synthroid icrease your pulse rate?From: Marie (anonymous@obgyn.net)Thu, 24 Jul 2003 20:17:43 -0500 (CDT)
At Thu, 24 Jul 2003, anonymous@obgyn.net wrote: I am 12 weeks pregnant. I was detected with hypothyroidism in 5th week. Since then my synthroid dosage has been 125mcg. After 4 weeks my levels were checked and they were normal. But my dosage was not reduced. For the past 2-3 weeks my heart races too fast. Even if I climb one staircase with the lowest most speed, by the time I am up, my heart sounds like I have climbed atleast 2-3 stairs in a great hurry. It doesn't take much time for it to go over 100. Since heart doesnt race so much so fast in the first trimester, I was wondering if this could be related to a high dose of synthroid. Could anyone help? Thank You. Dear Anonymous, It takes a while to get adjusted on Synthyroid and you may vary some, 7 weeks is not a long time. Have they run TSH and T4 free, T3 uptake? Have you had any other symptoms besides heart racing when climbing stairs? Even though it is early in pregnancy your volume is expanding and you may become more easily fatigued. Also being dehydrated, blood pressure, warm environments make play a factor, even how you breath while exercising may make a difference. The heat has been wiping me out the last few weeks with almost every day over 100 degrees, I just had my levels checked today. You and your body are changing everyday and you may have to learn to do things differently or pace yourself, but you should be able to climb stairs if you were able to before. Report this to your doctor, along with any other symptoms and ask to be checked. Take Care, Marie
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