Does anyone know of a great cardiologist? My daughter has been to two of them now and still no results other than mitral valve prolapse. One put her on beta blockers that didn't work and found out yesterday she should have never been put on them and the other said her valve was really thick but nothing they could do. She is short of breath all the time without doing hardly any exercise, heart palpitations, severely fatigued and her pain is awful when she is having an episode. At this point, any information or direction from anyone would be greatly appreciated!