ā
Before
A&D
Admission and discharge
A&P
Anterior and Posterior
Anatomy and Physiology
āā
Of each
Ab
Abortion
abd
Abdomen, abdominal
ABG
Arterial blood gas
ac
Before meals
ACLS
Advanced cardiac life support
ad lib
As desired
ADL
Activities of daily living
adm
Admission
AED
Automatic external defibrillation
AHA
American Hospital Association
AIDS
Acquired immune deficiency syndrome
am, AM
Morning, before noon
AMA
American Medical Association
against medical advice
amb
Ambulate, walk
amt
Amount
ANA
American Nurses’ Association
ANS
Autonomic nervous system
ant
Anterior
AP
Atypical Pulse
approx
Approximately