I work in the cardiac cath lab at Mount Sinai Hospital in New York Ciy. There are 8 diagnostic NP's who perform diagnostic procedures with an attending physician and one who performs diagnostic and PCI's with an attending physician. We also rotate consenting, and performing all pre and post cath/PCI care as well as the cardiology clinic. So absolutely, there is career for you in the cathlab as an NP. I am sure other hospitals will be hiring more nP's in the cathlab by the time you graduate. Good luck!