I have had increasing episodes of increased heart rate over the past year but it is episodic. Mine, I believe, is related to dysautonomia – a dysfunction of the autonomic nervous system due to my connective tissue disease, Ehlers-Danlos. I have a Reveal LINQ implanted which has caught all of these episodes. Last year, within less than a two week period, I had over 600 episodes of heart rate over 130 but the longest episode was under 3 minutes and most were around 1 minute in length. Most of the time, I was unaware of the increased rate. My cardiology provider gave me the option to increase my metoprolol if I felt I needed to, in January or February, I bumped it from 37.5 mg to 50 mg a day. I am apparently still getting the episodic tachycardias. But my provider is not particularly concerned — no really concerning arrhythmias.