I am a 43 year old male non-smoker, moderate drinker. For the past month I have had constant palpitations 3-4 maybe per minute. I did an ECG and 24n hour holder monitor, both came back more or less normal – the Holter showed I had isolated systolic beats. I also had a chest x ray to rule out aorta dissection as I have also had pain and numbness in left arm for 4 months. Unfortunately, the palpitations are still making my life miserable, it’s so difficult to work, sleep or function in general. I am on a mild dose of beta blocker (1.25mg bisoprolol) but it doesn’t seem to make much difference.