What do you want to do? That's the most important question. From my perspective, nursing offers a broader field of endeavor, more options, and more opportunities to work independently, and do solo practice.
Look at both fields. I don't know what your background is, but if you have no health care experience, find out if you can follow as nurse and an RT around -- perhaps a day for each. This may give you some ideas as to what each field does, and which you might like to do. Obviously, there's some overlap in what each does, but both have discreet practice areas, so some time spent observing might help you decide.
But ultimately, the answer comes down to you. Ask yourself what you want to do, where you want to work, how you would like to work -- those sort of questions. And trust your gut instinct. Your mind will put together answers even when you haven't consciously decided. Trust those answers. And good luck!
Jim Huffman, RN