They have said I had sinus tachycardia and they proceed to keep telling me i’ll Just grow out of it. It’s been 8 years....

@jacob98898 Welcome to our community of caring people .Are you under a Cardiologist care ?You should be .If one Dr,s opinion isn't satifactory to you find another Dr

@jacob98898 Do they both agree

I wouldn't worry alot about the term Sinus Tachycardia anyone including me with a transplanted heart has that. It means you have a normal sinus rhythm and tachycardia means fast heart rate. Mine averages 100-110 resting and can normally go up to 140 when im like climbing the stairs. Before my transplant tho i had ventricular tachycardia which is very dangerous. My daughter went through a similar case as yours her heart rate at rest with a normal heart is around 100. She went to my dr that also treated me back when i had a bad heart and he couldn't find anything either. He feels she has a lot of anxiety and needs to find ways to relax. So a second opinion is an option but maybe its something not heart related. For a healthy young person like yourself your heart while exercising can easily go ip to 70-80% of your max and at 21 your max is 220-21 or 199. Now you would not want it to stay there very long but you got some room. The say while exercising you should shoot for 70-80% of you max. My only concern is when you say it was 170 while resting and it was a normal sinus rhythm. Very odd. One thing for me i know is when I'm a little dehydrated my heart rate avg goes up. Do you drink plenty of water? That would also help lower your heart rate. Let us know what you find out?

Hi Jacob. I don't know who "they" are but telling you that you'll eventually grow out of it, I think it is time to find another doctor. cardiologist. I'll repeat exactly what Lioness said; if you don't have a cardiologist, you need to get one. Sounds like the two "specialists" need to send your records to another cardiologist so you can get a second opinion.

Hi:
You are way to young for a resting heart rate of 170. You need an other opinion by a new Cardiologist. Contact the Cleveland Clinic. Men’s hearts and women’s hearts are totally different.

I've been having these episodes for a good 3-4yrs. now and there getting worse I'll get really dizzy blackout sweaty and heart racing sometimes I can't even feel a plus I've gave tons of test done but everything keeps coming back good