A&O
alert and oriented
ABC
airway breathing circulation
ABG
arterial blood gas
ACLS
advanced cardiac life support
ADH
antidiuretic hormone
ADLs
activities of daily living
AED
automated external defibrillator
AICD
automated implantable cardioverter defibrillator
ALS
advanced life support
AM
morning
AMA
against medical advice
AMb
ambulate
AMI
acute MI
ANt
anterior
APAP
acetaminophen
APGAR
appearance, pulse, grimace, activity, respiration - for new borns
APN
advanced practical nurse
ARF
acute renal failure
ARDS
acute respiratory distress syndrome
ASA
aspiring
ASCVD
arteriosclerotic cardiovascular disease
BAC
blood alcohol content
BBB
bundle branch block
BC
blood culture