meds
Medications
mid noc
Midnight
min
Minute
NA
Nursing assistant
neg
Negative
noc
Night
NPO
Nothing by mouth
O2
Oxygen
OB
Obstetrics
OOB
Out of bed
OR
Operating room
os
Mouth
OT
Occupational therapy
oz
Ounce
pc
After meals
PCA
Patient controlled analgesia
peds
Pediatrics
per
By, through
PM
Afternoon
PO
By mouth, orally
Postop
Postoperative
Preop
Preoperative
prep
Preparation
prn
When necessary