AD
Right ear
Abd, abd
Abdomen
ac
Before meals
AS
Left ear
ASA
Acetylsalicylic acid (Aspirin)
bid, BID, b.i.d
Twice a day
BP
Blood pressure
c, c̄
With
CNS
Central nervous system
DC, D/C
Discontinue
qd
Everyday
qh, qhr
Every hour
q.i.d
Four times a day
SOB
Short of breath
tid, t.i.d, TID
Three times a day
TPR
Temperature, pulse, respiration
Po, PO
By mouth