It can be normal: Each individual can have significant variability in his/her respective heart rates. It depends on how fast is fast and if it's a "regular" rhythm, and when it is fast. If you provide more information, we may be able to provide better guidance.
Answered 10/18/2014
3.6k views
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question