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Medical Abbreviation
| Term | Definition |
|---|---|
| A&O | Alert and oriented |
| a.c. | before meals (ante cibum) |
| ABA | American Burn Association |
| ABG | arterial blood gas |
| ACA | Affordable Care Act |
| Ach | acetylcholine |
| ACL | anterior cruciate ligament |
| ACS | American Cancer Society, acute coronary syndrome |
| ACTH | adrenocorticotropic hormone |
| AD | right ear |
| ADD | attention deficit disorder |
| ADH | antidiuretic hormone |
| ADHD | attention deficit hyperactivity disorder |
| ADL | activity of daily living |
| ad lib. | freely as needed, at pleasure (ad libitum) |
| AFib | atrial fibrillation |
| AHF | antihemophilic factor |
| AI | aortic insufficiency (and several others) |
| AIDS | acquired immunodeficiency syndrome |
| ALD | assistive listening device |
| ALL | acute lymphocytic leukemia |
| ALS | amyotrophic lateral sclerosis |
| ALT | alanine aminotransferase |
| AMA | American Medical Association |
| AML | acute myelogenous leukemia |
| ANA | antinuclear antibody |
| AP | anteroposterior (also others) |
| aq. | water (aqua) |
| ARDS | acute (or adult) respiratory distress syndrome |
| ARF | acute renal failure |
| AROM | active range of motion |
| AS | left ear |
| ASHD | arteriosclerotic heart disease |
| AST | aspartate aminotransferase |
| AU | each ear |
| AV, A-V | atrioventricular |
| AVB | atrioventricular block |
| baso | basophil |
| BBT | basal body temperature |
| b.i.d. | twice a day (bis in die) |
| BMI | body mass index |
| BMT | bone marrow transplant |
| BP | blood pressure |
| BPH | benign prostatic hyperplasia |
| BPH | benign prostatic hypertrophy |
| BUN | blood urea nitrogen |
| Bx, bx | biopsy |
| C | Celsius |
| C&S | culture and sensitivity |
| C1, C2, etc. | first, second,etc., cervical vertebrae |
| CABG | coronary artery bypass graft |
| CAD | coronary artery disease |
| CAL | chronic airflow limitation |
| CBC, cbc | complete blood cell |
| CC | chief complaint |
| CDC | Centers for Disease Control and Prevention |
| CHF | congestive heart failure |
| CK (CPK) | creatine kinase (formerly called creatine phosphokinase) |
| CLL | chronic lymphocytic leukemia |
| cm | centimeter |
| CML | chronic myelogenous leukemia |
| CMV | cytomegalovirus |
| CNS | central nervous system |
| CO2 | carbon dioxide |
| COLD | chronic obstructive lung disease |
| COPD | chronic obstructive pulmonary disease |
| CPAP | continuous positive airway pressure (for sleep apnea) |
| CPD | cephalopelvic disproportion |
| CPK | creatine phosphokinase |
| CPM | continuous passive motion |
| CPR | cardiopulmonary resuscitation |
| CPT | Current Procedural Terminology |
| CRF | chronic renal failure |
| CS, C-section | cesarean section |
| CSF | cerebrospinal fluid |
| CSR | Cheyne-Stokes respiration |
| CT, CAT | computed tomography, computed and tomography |
| CTS | carpal tunnel syndrome |
| CVA | cerebrovascular accident (also costovertebral angle) |
| Cx | cervix |
| D&C | dilation and curettage |
| dB | decibel |
| DCIS | ductal carcinoma in situ |
| DIC | disseminated intravascular coagulation |
| DJD | degenerative joint disease |
| dL | deciliter |
| DLE | discoid lupus erythematosus |
| DM | diabetes mellitus |
| DMARD | disease-modifying antirheumatic drug |
| DNA | deoxyribonucleic acid |
| DOB | date of birth |
| DRG | diagnosis-related group |
| DRI | dietary reference intake |
| DSA | digital subtraction angiography |
| DSM | Diagnostic and Statistical Manual of Mental Disorders |
| DTs | delirium tremens |
| DTR | deep tendon reflex |
| Dx | diagnosis |
| EBV | Epstein-Barr virus |