aa
of each
ac
Before meals
ad
Up to
a.d.
Right ear
ad. lib
freely; use a much as one desires
a.m.
Morning; before noon
amp
Ampule
a.s.
Left ear
a.u.
both ears
ASA
Aspirin
ATC
Around the clock
AMA
Against medical advice
APAP
Acetaminophen
ASAP
As soon as possible
b.i.d
twice daily
BM
Bowel movement
BP
Blood pressure
BPM
Beats per minute
BS
Blood sugar
BSA
Body surface areas