| RNA | radionuclide angiography; Registered Nurse Anesthetist; ribonucleic acid; rough, noncapsulated, avir... |
|---|---|
| RN-C | registered nurse-certification |
| RNFP | Registered Nurse Fellowship Program |
| RRN | returning [for advanced studies] registered nurse |
| RSCN | Registered Sick Children's Nurse |