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N negative
MA cot applicable
NaCI sodium chloride
NAD no appreciable disease
neg negative
NKA no known allergies
NKDA no known drug allergies
NPN nonprotein nitrogen
NPO nothing by mouth
N&A nausea and vomiting
NYD not yet diagnosed
O2 oxygen
OB obstetrical, obstetrics
OC office call
occ occasional
OD overdose, right eye
OM otitis media
OP, op operation, operative, outpatient
OR operating room
orig original
OS, o.s. office surgery, left eye
OT occupational therapy
OTC over the counter (drugs)
OU both eyes
OV office visit
oz ounce
Created by: RYRRHUS