cardiac-orthopedic?

I am currently practicing as a cardiac nurse on a med surg floor. I have experience as a nurse extern on an orthopedic floor, but I went with recommendations to work with the heart right out of college. I have done that for 1 1/2 years now and find myself wanting to go back to the orthopedic side of things. I never particularly liked to work solely with the heart. The critical drips, and arrythmias! I just wanted to know if anyone has an advice about the comparison of the two fields. I feel as if I am stuck between a rock and a hard place, the rock being comfortable with where I am, and hard place being afraid of it so much.