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Sudden attacks of tachycardia after root canal treatment. Heart pounding, shortness of breath even after taking medicines. Cause?

I have a root canal over a month ago and two hours after the procedure I started experiencing sudden attacks of tachycardia. Over the next week it had become extremely frequent, spending most of the day with a heart rate above 115. I was prescribed 25mg metoprolol twice a day and I still feel a pounding heart and shortness of breath randomly but it has helped keep my heart rate under 100bpm. My blood tests were normal, ekg was normal, holter monitor showed sinus tachycardia . Im still waiting to take a stress test and the results of my echo. What else could cause this? Im 32 years old, 180lbs and not in terrific shape but I am fairly active.
Asked On : Sat, 30 Mar 2013
Answers:  1 Views:  116
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Cardiologist 's  Response
Hi friend,
Welcome to Health Care Magic

Increasing the dose of Metoprolol will help to control the rate.

Lab tests are necessary - anaemia, hyperthyroidism and so on should be looked for.

Echo and stress test may give clues.
If not, you may need Electro Physiological Studies (EPS) - the specialist is called ELECTRO-PHYSIOLOGIST.
The treating doctor may suggest them depending on need, based on his assessment of the situation.

Take care
Wishing speedy recovery
God bless
Good luck
Answered: Mon, 1 Apr 2013
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