| REST | Raynaud's phenomenon, esophageal motor dysfunction, sclerodactyly, and telangiectasia [syndrome]; re... |
|---|---|
| RICE | rest, ice, compression, and elevation |
| ROW | Rendu-Osler-Weber [syndrome]; rest of the world |
| RP | radial pulse; radiopharmaceutical; rapid processing [of film]; Raynaud phenomenon; reactive protein;... |
| R&R | rate and rhythm; rest and recuperation |