| NERD | no evidence of recurrent disease |
|---|---|
| RAP | recurrent abdominal pain; regression-associated protein; renal artery pressure; resident assessment ... |
| RAS | rapid atrial stimulation; recurrent aphthous stomatitis; reflex activating stimulus; reliability, av... |
| RBD | recurrent brief depression; relative biological dose; right border of dullness |
| RCDA | recurrent chronic dissecting aneurysm |