I just found out that I have Sinus Arrhythmia. They are not related.
Hyperthyroidism can predispose to arrhythmia such as atrial fibrillation.
I hope this has been useful. I wish you the best of luck. Information contained within this forum is intended solely for general educational purposes and is not intended nor implied to be a substitute for professional medical advice relative to your specific medical condition or question. Only your physician can provide specific diagnoses and therapies. All rights reserved.