| R | Respiration; 호흡 |
|---|---|
| R&C | resistance and capacitance |
| R&D | research and develpment |
| R&E | research and education |
| R&L | right and left |
| R&R | rate and rhythm; rest and recuperation |
| R' | in electrocardiography, the second positive deflection during the QRS complex |
| R+ | Rinne test positive |
| R-C sign(spot) | Red Cherry sign(spot) |
| R-EEG | resting electroencephalography |