Dotty,
In answer to your question #1 of BNP: It is difficult to tell how much the right heart congestion is elevating your levels and clinically it probably really doesnt make much of a difference in how you are treated. As physicians, we are still trying to figure out exactly what the role of BNP will be in the field of cardiology. It held some promise in its inital use and may still help in the diagnosis of heart failure in the emergency setting, but overall it really hasn't proven to be that useful overall.
The answer to your second question is the same as when you asked it before. I couldn't really tell you the best treatment of your right heart symptoms without seeing you. I would recommend you seek a second opinion if you arent satisfied with the answers youv'e had so far.
Good luck