Nursing Medical Math Abbreviations
TKO
To keep open
unit
Unit do not use U
pc
after meals
prn
as needed
ac
before meals
po
by mouth
cap, caps
capsule
CR
controlled release
cc
cubic centimeter use mL instead
In the right eye
do not use OD, oculus dextra
In the left eye
do not use OS, oculus siniser
in both eyes
do not use OU
every other day
do not use qod
subcutaneously
do not use sc, sq, s.c., or s.q.
three times a week
do not use tiw
DS
double strength
dr
dram
gtt
drop
el, elix
elixir
EC
enteric coated
q12h
every 12 hours
q2h
every 2 hours
q4h
every 4 hours
q6h
every 6 hours
q8h
every 8 hours
daily
every day
daily
every day, do not use qd
qh
every hour
qn
every night
V, v
five
qid
four times a day
gr
grain
g
gram
at bedtime
hour of sleep do not use hs
stat
immediately
pr
in the rectum
IM
intramuscularly
IVP
intravenous push
IV
intravenously
KVO
keep vein open
kg
kilogram
L
liter
mcg
microgram
mg
miligram
mL
mililiter
mEq or meq
milliequivalent
m
minim
NEB
nebulizer
NKDA
no known drug allergies
ung, oint.
ointment
I, i
one
oz
ounce
pt
pint
qt
quart
sol
solution
sp
spirit
SL
sublingual, under the tongue
sup, supp
suppository
susp
suspension
SA
sustained action
S & S
swish and swallow
syr
syrup
tbsp
tablespoon
tab
tablet
tsp
teaspoon
X,x
ten
tid
three times a day
tr, tinct.
tincture
bid
twice a day
biw
twice per week
IVPB
Intravenous piggyback
LA
Long Acting
MDI
Metered-dose inhaler
NGT or ng
Nasogastric tube
NKA
No known allergies
SR
Slow release or sustained release
