vitamins. Usually what you describe is caused by an externality.
If it remains regular it could be : Inappropriate Sinus Tachycardia (normal or regular fast beating heart) .
If irregular beating is noted it may be: atrial fibrillation (irregular heart beat from the upper chambers of the heart) or atrial flutter a fast but more regularly irregular heart beat.
There are several possibilities , so I'd recommend that you see your primary care doctor who can order a heart monitor(ambulatory ekg) that you can wear for 24 hours or more or an event monitor for up to 30 days as an outpatient or refer you to your local cardiologist.
The danger of a continuous fast beating heart is enlargement or dilation of the heart known as a cardiomyopathy.
I hope this helped to answer your question & that you seek additional evaluation & treatment as needed.
Go check with your pcp
To fully determine the cause, start with keeping a log of heart rate, time of day, blood pressure and circumstances (sitting, standing, having walks upstairs etc). Keep the log for at least 2 weeks and then present to your doctor for further options. Additional, objective tests need to be considered
may also be an early sign of nascent heart failure. There is enough data to
support that elevated heart rate is deleterious to health long term. It
needs further evaluation. Contact you PCP and possibly a cardiologist. A
simple stress test may answer most of these concerns.
Anwar Ahmad MD, FACC
I hope this helps a little. Feel free to reply with more questions or added information you might have
Mark Zweben, MD FACC
Jason Talavera, MD, FACC