The primary qualifications for jobs in the cardiac rehab field are a license to work as a registered nurse and several years of experience with cardiac rehabilitation, surgery, or similar areas. Becoming a registered nurse involves graduating with a bachelor's degree in nursing, passing the National Council License Exam, and obtaining an RN license from your state. The fees and requirements for state licenses vary, so it's best to check the current requirements when you get your degree. Fulfilling the duties and responsibilities of a cardiac rehab specialist requires excellent nursing skills, the ability to spot and treat medical problems quickly, and familiarity with the best practices of the field.