lab
Laboratory
lb
pound
liq
liquid
LMP
last menstrual period
meds
medications
MI
myocardial infarction
min
minute
neg
Negative
nil
none
NPO
nothing by mouth
OB
obstetrics
OOB
out of bed
OR
Operating room
ortho
orthopedics
OPD
outpatient department
O2
Oxygen
oz
Ounce
P/post
After
pc
After meals
Peds
Pediatrics
PM
Afternoon/evening
p.o.
by mouth
postop
postoperative
preop
preoperative