Medical Abbreviations

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Abbreviation


Interpretation



AAA

abdominal aortic aneurysm



A-a gradient

alveolar to arterial gradient



AAD

antibiotic-associated diarrhea



AAO

alert, awake, and oriented



A&O

alert & oriented



AAS

acute abdominal series



ABD

abdomen



ABG

arterial blood gas



AC

before eating



ACLS

advanced cardiac life support



ACTH

adrenocorticotropic hormone



ADH

anti-diuretic hormone



ADR

adverse drug reaction. | acute dystonic reaction



ad lib

as much as needed



AED

antiepileptic drug



AF

atrial fibrillation or afebrile



AFB

acid-fast bacilli



AFP

alpha-fetoprotein



A /G

albumin/globulin ratio



AI

aortic insufficiency



AKA

above the knee amputation



ALD

alcoholic liver disease



ALL

acute lymphocytic leukemia



amb

ambulate



AML

acute myelogenous leukemia



ANA

antinuclear antibody



ANS

autonomic nervous system



AOB

alcohol on breath



AODM

adult onset diabetes mellitus



AP

anteroposterior or abdominal - perineal



ARDS

acute respiratory distress syndrome



ARF

acute renal failure



AS

aortic stenosis



ASAP

as soon as possible



ASCVD

atherosclerotic cardiovascular disease



ASD

atrial septal defect



ASHD

atherosclerotic heart disease



AV

atrioventricular



A-V

arteriovenous



A-VO2

arteriovenous oxygen