It's more than a career, it's a calling MO St. Mary's Hospital - St. Louis Worker Type: PRN1 Job Highlights: PRN RN Opportunity in the Cath Lab at St Mary's Hospital. Job Summary: Plans coordinates and implements care to the adult patient in the Cardiac Cath Lab. Ensures that quality care is provided in an efficient and safe manner consistent with the unit's standards of care and demonstrates competency skills appropriate to the clinical area.