Answer by
patti (29325)
After earning a four-year RN, you can go on to become a nurse practitioner in a number of specialty areas (pediatrics, geriatrics, etc. ) Many RNs focus their work in a specific area like orthopedics, surgery, cardiology, ICU, NICU, etc. Other post-graduate fields include midwifery and anesthesia, both of which require additional, formal education.