Heart Rhythm issue

[Teressa083]

I am 31 years old and weigh about 142 an my height is 5 11.  My resting heart rate is 107 to 116.  Is this normal? Sometimes I will feel so dizzy and tired all the time.  I went to the dr about a month ago and he put me atenalol.  We are not sure what is causing it.  MY ekg is fine.  Please help.

Thank you
Teressa  

[Teressa083]

I will let them check my potassium and calcium levels.  Thank you for the advice.

[Brooke_38]

Hmmmmm.....what about your Potassium,Calcium and Magnesium levels, were these checked as well? If all other causes of this tachycardia are ruled out, it could be IST (inappropriate sinus tach).

You say that the Dr isn't sure what the underlying problem is, so what is his/her plan to determine the cause?

[Teressa083]

They did do the thyroid test but everything was ok.

Teressa

[Brooke_38]

Hello...

When you were at your appointment did you also have any type of blood work done ie. Thyroid function tests, CBC (complete blood count)?

Any inbalance of hormones or electrolytes can cause tachycardia. If your heart is in a constant state of tachycardia, ( >100bpm ) it can cause you to feel fatigued.