Hi @liz7186, and WELCOME to Mayo Connect!
You have come to a great place to learn from others with your same condition. Mayo Connect is a place where we can openly share our concerns and experiences, and hopefully learn from each other too. We can't dispense medical advice or guess as to what certain test results may mean, so I hope you have an appointment with your cardiologist in the near future? You mention the NSVT (Non-sustained Supra-ventricular Tachycardia) was picked up recently on an event monitor, so I am just assuming that means you will have follow up. From my own experience, I had a variety of arrhythmias, of which SVT was one. The difference between the two is elusive, but I think it just means the SVT occurs and goes away very quickly, thus the "non-sustained". I can also testify that there were times before I had my septal myectomy I was afraid I would suddenly die! It's a real fear. So I do hope your cardiologist is up to date with HCM and HOCM and that you have confidence in them to guide you in the right direction and treatment. Do you have a follow-up appointment scheduled to go over the heart monitor?