ABR
auditory brain stem response
AD
right ear (auris dextra), dangerous abbreviation
AS
left ear (auris sinestra), dangerous abbreviation
AU
both ears, each ear (auris uterque), dangerous abbreviation
EENT
eyes, ears, nose, and throat
ENG
electronystagmography
ENT
ears, nose, and throat
OAE
otoacoustic emission (testing