Aa
Of each
AAA
Abdominal aortic aneurysm
abd
Abdomen
ABG
Arterial blood has
a.c.
Before meals, before eating
ACLS
Advanced cardiac life support
AD
Advanced directive
ADA
American diabetic assoc. diet
ADH
Anti-diuretic hormone
ADL
Activities of daily living
Ad lib
Freely, as desired
Adm
Admission
ADR
Adverse drug reaction
AES
Anti emboli stockings
AF
Atrial fibrillation
AIDS
Acquired immunodeficiency syndrome
AK
Above the knee
AKA
Above the knee amputation
ALC
Alternate level of care
A.m.
Morning
ARDS
Acute respiratory distress syndrome
ARF
Acute renal failure
ASAP
As soon as possible
A&O
Alert and oriented