A member asked:

Rhr 80-100. standing up 110-140. 140-190 doing exercise. echo, blood, holter, stress test all fine. dizziness/headaches/faint. i don't understand?!

3 doctors weighed in across 2 answers

? Hormonal or other: Your heart rates are borderline or abnormal. You need to have more exams. Perhaps your problem is glandular, e.g. An over active thyroid can cause all your symptoms.

Answered 9/9/2013

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Dr. William Nall answered

Specializes in Sports Medicine

Endocrine?: I'd probably check some endocrine markers like your thyroid and adrenal function. Possibly a heart rate variability test (hrv or ansar) test could be helpful to see if your autonomic nervous system is fine. Sounds like your heart is solid.

Answered 12/17/2014

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