ā
before
aa
Of each
AA
Aortic Aneurism
AAA
Abdominal aortic aneurysm
abd
abdomen
ac
Before meals
ad lib
At will, as desired
adm
Admission, admitted, administer
AIDS
Acquired immunodeficiency syndrome
am
Before noon
AMA
against medical advice
ant
Anterior
amb
Ambulate (walk)
approx
Approximately
ARDS
Acute respiratory distress syndrome
ASA
Aspirin
ASAP
As soon as possible
AV
Atrioventricular
BCAA
Branched chain amino acids
bid
Twice a day
BIPAP
Bi-level positive airway pressure
BM
Bowel movement
BMR
Basal metabolic rate
BP
Blood pressure