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Constant palpitations, eases with intake of beta blockers. Tests showed low thyroid, normal EKG. What could it be?

Blood tests show a low thyroid except I have no symptoms of hypothyroid . I have been having constant heart beating for a week and a few days now. Had an EKG and it seemed normal but with a really fast heart beat. Doctor put me on beta blocker and it seemed to bring my pulse rate down. Blood pressure reading seems to be normal. All day my pulse rate was in the 70s when I started taking beta blocker,until I woke up from sleep. Now its in the 80s and even reached 90. What could this possibily be?? Is it possible its from my thyroid and its hyperthyroid but for some reason my blood tests aren t showing this?
Asked On : Mon, 23 Jul 2012
Answers:  1 Views:  63
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Question is related to
Lab Tests
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General & Family Physician 's  Response
Thanks for query,
In Hyperthyroidism you have first loss of weight, then Protruding eye ball,Malaise,Easy fatigue ,Tremors etc.
Tachycardia occurs along with symptoms then you should diagnosed as having Hyperthyroidism.
Your blood report also confirms that you have no hyper thyroid.
as your EKG has normal tracing it is a simple Tachycardia may be due to anxiety so you continue with Beta blockers.
Don't forget to go for periodic EKG tracing to watch for any disturbances in Rytham.
Answered: Mon, 23 Jul 2012
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