You may be interested to find out, that there is often other issues that go along with having MVP.
I have had questions from several individuals with MVP. I have learned a few things. I'm sure it is no fun to have, but it is an interesting disorder, and you can actually learn to control some aspects of it.
Although, I certainly recommend you continue to follow up with your doctor, and if you have a blockage of a vessel in your heart, I hope you are doing things to help with that (decreasing certain "bad" fats in your diet; exercising gradually to toleration - walking is great)
Apparently MVP is a sign in nearly 90% of the people with it of an underlying condition of the autonomic nervous system.
In an individual with MVP syndrome anything that makes you a little nervous or anxious can cause your autonomic system to treat as a much bigger "attack" than it actually is, and that is why you gets so extremely nervous.
So because of this overly reactive autonomic nervous system you get into an anxiety state, or panic state much easier.
Beta Blocker medication can help with this, and you are on one, atenolol.
I also have an article that explains the MVP syndrome in an indepth way, and it also talds about various treatment recommendations. So I hope you read it. It is also an interesting article that should be an "eye opener" for you to read.
The article above recommends using relaxation techniques when you start to feel panicy about your heart. This can really help. I have a great website here that gives a good explanation of several techniques and will make it easier for you to learn to do these. See: http://www.concernedcounseling.com/communities/anxiety/christine/articles_relaxation_techniques.asp
I hope you try some of these suggestions. Please feel free to get back to me and let me know how it is working for you.
Also, if you have further quesions don't hesitate to reply.