| plx | plexus |
|---|---|
| SVP | selective vagotomy and pyloroplasty; small volume parenteral [infusion]; standing venous pressure; s... |
| DRE | digital rectal examination |
| DRS | descending rectal septum; diagnostic review station; Division of Research Services [NIH]; drowsiness... |
| P&R | pelvic and rectal [examination]; pulse and respiration |