@jsl4801 I developed arrhythmia about 3 weeks after my septal myectomy. Dizziness and giddiness when moving around, never when sitting or laying. Syncope, wore Holter for a month, pressed a button each time felt dizzy, another Syncope, report from Holter showed arrhythmia. I was given Buddy, my ICD. Your situation is unique to you, but my story may be useful. Our lucky hearts underwent quite a bit of trauma.