et
with
ex aq.
in water
fl
fluid
ft.
make
gr.
grain
h
hour
H
Hydrogen
h.s
at bedtime
HDP
High blood pressure
HCT
hematocrit
HCTZ
hydrochlorothiazide
HEPA
High-Efficiency Particular Air
HERZ
One cycle per second
I&O
Intake & Output
ICU
Intensive care unit
ID
Intradermal
IM
Intramuscular
Inj.
Injection
IPPB
Intermittent Positive Pressure Breathing
IU or iu
International unit