Why don't you have your cardiologist and your hematologist get together to discuss what is best for you?!
When I was diagnosed with Graves Disease I had my endocrinologist get with my hematologist & they decided the one treatment for Graves would most likely lower my platelet count so we went with a different treatment. I'm now with an HMO and that makes it very easy for my many specialists to get together to discuss me. It is ok to ask one specialist/doctor to talk with another specialist/doctor - in fact it is a good idea!
Good luck!!
"Instead of wasting your time worrying about symptoms, just get it checked out" -Nieca Goldberg, MD