ā
Before
A, Acc
Accommodation
āā
Of each (used in writing prescriptions)
A1c
Glycated hemoglobin
Ab
Antibody
AB
Abortion
ABC
Aspiration biopsy cytology
ABGs
Arterial blood gases
ABR
Auditory brainstem response
ac
Before meals
AC
Air conduction
ACE
Angiotensin-converting enzyme
ACh
Acetylcholine
ACL
Anterior cruciate ligament
ACTH
Adrenocorticotropic hormone
ad lib
As desired
AD
Alzheimer’s disease
ADH
Antidiuretic hormone
ADHD
Attention deficit hyperactivity disorder
ADL
Activities of daily living
AE
Above elbow
AED
Automated external defibrillator
AF
Atrial fibrillation
AFB
Acid-fast bacillus