Browse Medical Abbreviations

A accommodation; before; assessment; artery; anterior; anode; ampere
a not; before; anterior; anode
A&E accident and emergency
A&O alert and oriented
A&Ox3 awake and oriented to person, place, and time
A&Ox4 awake and oriented to person, place, time, and situation
A&P auscultation and percussion; assessment and plan; anterior and posterior; anatomy and physiology
A&W alive and well
A-A atlanto-axial joint
A-G ratio albumin/globulin ratio
A-R apical radial (pulse)
A-T baby teeth
A-VO2 arteriovenous oxygen
a.c. before meal (ante cibum)
a.p. antepartum; anterior-posterior
A.T. anterior tibial
A/C assist/control
A/G albumin/globulin ratio
A/O alert and oriented
A/V atrioventricular; arteriovenous; aortic valve
A1c glycosylated hemoglobin
A2 aortic second sound
aa of each
AA arteries; aortic aneurism; amino acid; alopecia areata; Alcoholics Anonymous; affected area; acute appendicitis; acetic acid
AA&O awake, alert and oriented
AAA abdominal aortic aneurysm
AAL anterior axillary line
AAMI age-associated memory impairment
AAO awake, alert, and oriented
AAR after action review/report
AAU acute anterior uveitis
AB antibody; active bilaterally; abdominal; abortion
Ab antibody; abortion
ab abortion; abdominal
Abb abbreviated
ABC automated blood count; absolute basophil count
ABCD2 age, blood pressure, clinical findings, duration of symptoms, diabetes mellitus (stroke risk score)
ABCDE airway, breathing, circulation, disability, expose, and examine
abd abdominal; abduction; abdomen
ABG arterial blood gas
ABI ankle/brachial index
ABLA acute blood loss anemia
abn abnormal(ity)
ABP acute bacterial prostatitis
ABR auditory brain response
abs antibodies; absent, absence
Abs antibodies
ABW actual body weight
abx antibiotics
AC adriamycin and cytoxan; acromioclavicular; adrenal cortex; axiocervical
ac before meal (ante cibum)
ACA Affordable Care Act; anticentromere antibodies
ACC adenoid cystic carcinoma; aplasia cutis congenita
acc according; accident
acc. accommodation
ACDA adult children of alcoholics
ACE angiotensin-converting enzyme; adverse clinical event; all cotton elastic bandage
ACEI angiotensin-converting enzyme inhibitor
ACh acetylcholine
AChE acetylcholinesterase
ACHES abdominal pain, chest pain, headache, eye problems, and severe leg pains
AChR acetylcholine receptor
ACL anterior cruciate ligament
aCL anticardiolipin antibodies
ACLS advanced cardiac life support
ACO accountable care organization
ACP advanced clinical practice; advanced care plan; accountable care partnerships
ACS American Cancer Society; ambulatory care-sensitive; accountable care systems; acute coronary syndrome
ACT activated clotting time
act activity
ACTH adrenocorticotropic hormone
ACU ambulatory care unit
ACV assist control ventilation
ACVD atherosclerotic cardiovascular disease; acute cardiovascular disease
ad up to; to
AD advance directive; Alzheimer's disease; right ear (auris dextra); autosomal dominant
ad lib. freely, as desired, at liberty (ad libitum)
ad sat. to saturation
ADA American Diabetes Association; adenosine deaminase
ADC aids dementia complex; apparent diffusion coefficient
Add adduction
ADD attention deficit disorder
ADDH attention-deficit disorder with hyperactivity
addl additional
ADE adverse drug event/experience
adeq adequate
ADH antidiuretic hormone
ADHD attention deficit hyperactivity disorder
ADHF acute diastolic heart failure
ADI acceptable daily intake
ADL activities of daily living
adm admission; administer(ed)
ADME absorption, distribution, metabolism, and excretion
admin administration, administer
ADR adverse drug reaction
ADT anticipated discharge tomorrow; admission, discharge, transfer
adv advise(d)
AE acute exacerbation; above elbow; adverse events; arm ergometer; adverse event
AEA above elbow amputation
AEB as evidenced by
AEC ambulatory emergency care
AED automated external defibrillator (less commonly: antiepileptic drug)
AER adverse event report; auditory evoked response
AF atrial fibrillation; afebrile; anteflexed
AFB acid fast bacilli
Afeb afebrile
Afib atrial fibrillation
AFO ankle foot orthosis
AFP alpha-fetoprotein
AFV amniotic fluid volume
AFX atypical fi broxanthoma
Ag Silver (element); antigen
ag antigen
AGA appropriate/average for gestational age
AGC atypical glandular cells (of undetermined significance)
AGE acute gastroenteritis
AGEP acute generalized exanthematous pustulosis
AgNO3 silver nitrate
Ags antigens
ags antigens
AH auditory hallucination
AHA American Heart Association; American Hospital Association
AHF antihemophilic factor
AHG aggregated human IgG; antihuman globulin
AI aortic insufficiency/incompetence; adequate intake
AICD automatic implantable cardiac defibrillator
AIDS acquired immunodeficiency syndrome
AIMS abnormal involuntary movement scale; arthritis impact measurement scales
AK actinic keratosis; above the knee
AKA above the knee amputation
aka also known as
AKI acute kidney injury
AKN acne keloidalis nuchae
Al Aluminum (element)
ALA aminolevulinic acid
Alb albumin
ALC acute lethal catatonia
alc alcohol
ALD alcoholic liver disease
ALFT abnormal liver function test
ALL acute lymphocytic/lymphoblastic leukemia
ALP alkaline phosphatase
ALS amyotrophic lateral sclerosis; advanced life support
ALT alanine aminotransferase (formerly SGPT); alanine transaminase
alt alternate
alt. dieb. every other day (alternis diebus)
alt. hor. alternate hours (alternis horis)
alt. noct. alternate nights (alternis noctes)
AM morning, before noon (ante meridiem)
am morning, before noon (ante meridiem)
AMA American Medical Association; against medical advice; antimitochondrial antibodies
amb ambulate/ambulatory
AME absorption, metabolism, excretion
AMI acute myocardial infarction
AML acute myelogenous (myeloblastic) leukemia
AMLS advanced medical life support
AMML acute myelomonocytic leukemia
amnio amniocentesis; amniotic
amp amputation; ampule
AMR antimicrobial resistance
AMS altered mental status; aseptic meningitis syndrome
AMSIT appearance, mood, sensorium, intelligence, thought process
amt amount
AMU acute medical unit
AN acanthosis nigricans
ANA antinuclear antibody; antinuclear antigen
anast. anastomosis
anat anatomy or anatomic
ANC absolute neutrophil count
ANCA antineutrophilic cytoplasmic antibody
ANCOVA analysis of covariance
AND allow natural death
ANF atrial natriuretic factor
ANLL acute nonlymphocytic leukemia
ANP advanced nurse practitioner; alkaline phosphatase; atrial natriuretic peptide; adult nurse practitioner
ANS autonomic nervous system
ant. anterior
anti-CCP anticyclic citrullinated peptide
anti-GBM anti-glomerular basement membrane
Anti-HAV Hepatitis A antibody
Anti-HBc Hepatitis B antibodies to the core antigen
Anti-HBe Hepatitis B antibody (antibody to HBeAg)
Anti-HBs Hepatitis B antibodies to the surface antigen
Anti-HCV Hepatitis C Virus Antibodies
AO aorta
Ao. aorta
AOB alcohol on breath
AODM adult onset diabetes mellitus
AOM acute otitis media
ap before dinner
AP appendectomy; apical pulse; anteroposterior; antepartum; alkaline phosphatase
Ap apex/apical
AP D anteroposterior diameter
APACHE Acute Physiology and Chronic Health Evaluation
APAP N-acetyl-para-aminophenol (paracetamol, acetaminophen)
APC aspirin/caffeine; atrial premature contraction; admitted patient care
APD automated peritoneal dialysis
APE acute psychotic episode
API active pharmaceutical ingredient
APL IgA phospholipid unit; abductor pollicis longus
aPL antiphospholipid antibodies
APMS alternative provider medical services
APN Advanced Practice Nurse
appar apparent
APPG aqueous procaine penicillin-g
approx approximately
appt appointment
aPPT activated partial thromboplastin time
APRN Advanced Practice Registered Nurse
APRV airway pressure release ventilation
APS antiphospholipid syndrome
APSGN acute poststreptococcal glomerulonephritis
APT anatomical pathology technologist
aPTT activated partial thromboplastin time
aq water (aqua)
AR autosomal recessive; allergic rhinitis; aortic regurgitation
Ar Argon (element)
ARB angiotensin-ii receptor blocker
ARBD alcohol-related birth defects
ARC Acid-resistant cells; American Red Cross; AIDS-related complex
ARD acute respiratory disease
ARDD alcohol-related developmental disability
ARDS acute respiratory distress syndrome
ARF acute renal failure
ARG argininemia
ARMD age-related macular degeneration
ARND alcohol-related neurodevelopmental disorder
ARNP Advanced Registered Nurse Practitioner
AROM artificial rupture of membranes; active range of motion
ARRP anatomic retropubic radical prostatectomy
ARRT adult rapid response team
ARS acute radiation syndrome; anti-rabies serum
ART antiretroviral therapy; artery; assisted reproductive therapy; accredited record technician
art. arterial; artery
ARV antiretroviral
AS ankylosing spondylitis; aortic stenosis; arteriosclerosis; left ear (auris sinistra)
As Arsenic (element)
as tol as tolerated
As. astigmatism
ASA acetylsalicylic acid (aspirin)
ASAP as soon as possible
ASC atypical squamous cells
ASC-US atypical squamous cells of undetermined significance
asc. ascending
ASCA anti-saccharomyces cerevisiae antibody
ASCVD atherosclerotic cardiovascular disease
ASD autism spectrum disorders; atrial septal defect
AsH hypermetropic astigmatism
ASHD arteriosclerotic heart disease
ASHF acute systolic heart failure
AsM myopic astigmatism
ASO antistreptolysin-o titer
AST aspartate aminotransferase (formerly SGOT)
Ast astigmatism
ASU ambulatory surgery unit
at. wt. atomic weight
ATF alcohol, tobacco, and firearms
ATG antithymocyte globulin
ATLS advanced trauma life support
ATN acute tubular necrosis
ATOD alcohol, tobacco, and other drugs
ATP adenosine triphosphate
atr atrophy
AU angstron (angstrom) unit; arbitrary unit; each ear (auris uterque), both ears
Au Gold (element)
AUC area under the curve
aud auditory
AUG oxytocin challenge test
ausc auscultation
aux auxiliary
AV arteriovenous; atrioventricular; aortic valve
AV (node) atrioventricular (node)
AV Block atrioventricular block
AV valves atrioventricular valves
av. avoirdupois
AVB atrioventricular block
AVD atrioventricular dissociation
AVI automatic volume infusion pump
AVM arteriovenous malformation
AVN avascular necrosis
AVP arginine vasopressin
AVPU alert, verbal, pain response, unresponsive
AVR aortic valve repair; aortic valve replacement
AVSS afebrile, vital signs stable
AWC adequate and well-controlled
AWMI anterior wall myocardial infarction
AWOL absent without (official) leave
ax axillary
AXT alternating exotropia
AZA azathioprine