inf.
Infusion
irrig
irrigation
inh.
Inhalation
IN
Intranasal
I&O
intake and output
int. cib.
Between meals
incid
cut
in d.
in a day
IM
intramuscular
inj
an injection
ID
Intradermal
int.noct.
during the night
in.
inches
IV
intravenous
IR
Immediate Release
IU
International Unit
IBW
Ideal body weight
instill.
Instillation
IP
Intraperitoneal
IUD
Intrauterine device
IVP
Intravenous push
IVPB
Intravenous piggyback