Dictionary of Medical Acronyms & Abbreviations

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[ I ]

I₁ | I₂ | I₃ | I₄ | I₅ | I₆ | I₇ |

I carcinoma of the vaginal wall [International Federation of Gynecologists and Obstetricians (FIGO) classification]; electric current; endometrial carcinoma in situ confined to the corpus uteri [International Federation of Gynecologists and Obstetricians (FIGO) classification]; immediate; implantation; impression; inactive; incisor [permanent]; increase; independent; index; indicated; indirect; induction; inertia; inhalation; inhibited [pacemaker]; inhibition, inhibitor; inosine; insoluble; inspiration, inspired; insulin; intake; intensity; intermediate; intermittent; internal; internal medicine; intervention; intestine; involvement of a single lymph node [Ann Arbor staging system for Hodgkin disease]; iodine; ionic current; ionic strength; iris; ischemia; isochromosome; isoleucine; isotope; isotropic; nuclear spin quantum number; region of a sarcomere that contains only actin filaments
I2 intervention implementation [AIDS prevention]
I-131 iodine-131
i electric current; incisor [deciduous]; insoluble; isochromosome; optically inactive
ι see iota
IA ibotenic acid; image analysis; immediately available; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolaminergic accumulation; indole acetic acid; indolic acid; indulin agar; infantile autism; infected area; inferior angle; information assurance; inhibitory antigen; inpatient admission; intelligent agent [decision support model]; internal auditory; intra-alveolar; intra-amniotic; intra-aortic; intra-arterial; intra-articular; intra-atrial; intra-auricular; intracellular anchor [segment]; intrinsic activity; irradiation area; isopropyl alcohol
I&A identification and authentication; irrigation and aspiration
Ia endometrial carcinoma in situ, length of uterine cavity less than 8 cm [International Federation of Gynecologists and Obstetricians (FIGO) classification]; immune response gene-associated antigen
IAA imidazoleacetic acid; indoleacetic acid; infectious agent, arthritis; insulin autoantibody; International Antituberculosis Association; interruption of the aortic arch; iodoacetic acid
IAAA inflammatory abdominal aortic aneurysm
IAAR imidazoleacetic acid ribonucleotide
IAB Industrial Accident Board; intra-abdominal; intra-aortic balloon
IABA intra-aortic balloon assistance
IABC, IABCP intra-aortic balloon counter-pulsation
IABM idiopathic aplastic bone marrow
IABP intra-aortic balloon pump
IABS International Association for Biological Standards
IAC image analysis cytometry; immuno-affinity chromatography; ineffective airway clearance; internal auditory canal; interposed abdominal compression; intra-arterial catheter; intra-arterial chemotherapy
IAC CPR interposed abdominal compression cardiopulmonary resuscitation
IACD implantable automatic cardioverter-defibrillator; intra-arterial conduction defect
IACI idiopathic arterial calcification of infancy
IACOV Iaco virus
IACP intra-aortic counterpulsation
IACS International Academy of Cosmetic Surgery
IACUC institutional animal care and utilization committee
IACV International Association of Cancer Victims and Friends
IAD inactivating dose; instructional advance directive; internal absorbed dose; internal age distribution; intraset distance
IADH inappropriate antidiuretic hormone
IADHS inappropriate antidiuretic hormone syndrome
IADL instrumental or intermediate activities of daily living
IADR International Association for Dental Research
IAds immunoadsorption
IADSA, IA-DSA intra-arterial digital subtraction angiography
IAEA International Atomic Energy Agency
IAET International Association for Enterostomal Therapy
IAF idiopathic alveolar fibrosis; 5-iodoacetamidofluorescein
IAFC International Association of Fire Chiefs
IAFF International Association of Fire Fighters
IAFI infantile amaurotic familial idiocy
IAG International Association of Gerontology; International Academy of Gnathology
IAGP International Association of Geographic Pathology
IAGUS International Association of Genito-Urinary Surgeons
IAH idiopathic adrenal hyperplasia; implantable artificial heart
IAHA idiopathic autoimmune hemolytic anemia; immune adherence hemagglutination
IAHD idiopathic acquired hemolytic disorder
IAHS infection-associated hemophagocytic syndrome; International Association of Hospital Security
IAI integral access interface [telemedicine]; intra-abdominal infection; intra-abdominal injury
IAIMS Integrated Academic Information Management System; Integrated Advanced Information Management System
IAIS insulin autoimmune syndrome
IAM immune adhesion molecule; Institute of Aviation Medicine; internal auditory meatus
i am intra-amniotic
IAMA Infection in Atherosclerosis and Use of Macrolide Antibiotics [study]
IAMM International Association of Medical Museums
IAMS International Association of Microbiological Societies
IAN idiopathic aseptic necrosis; indole acetonitrile
iANP immunoreactive atrial natriuretic peptide
IAO immediately after onset; intermittent aortic occlusion; International Association of Orthodontists
IA OCA oculocutaneous albinism type IA
IAOM International Association of Oral Myology
IAP idiopathic acute pancreatitis; immunosuppressive acidic protein; incident action plan; inosinic acid pyrophosphorylase; Institute of Animal Physiology; integrin-associated protein; intermittent acute porphyria; International Academy of Pathology; International Academy of Proctology; International Atherosclerosis Project; intra-abdominal pressure; intra-arterial pressure; intracellular action potential; intracisternal A-type particle; islet-activating protein
IAPB International Association for Prevention of Blindness
IAPG interatrial pressure gradient
IAPM International Academy of Preventive Medicine
IAPP International Association for Preventive Pediatrics; islet amyloid polypeptide
IAPSRS International Association of Psychosocial Rehabilitation Services
IAPV intermittent abdominal pressure ventilation
IAQ indoor air quality
IAR immediate asthma reaction; inhibitory anal reflex; iodine-azide reaction
IARC International Agency for Research on Cancer
IARF ischemic acute renal failure
IARG International Anticoagulant Review Group [study]
IARS image archival and retrieval system
IARSA idiopathic acquired refractory sideroblastic anemia
IAS immunosuppressive acidic substance; infant apnea syndrome; insulin autoimmune syndrome; interatrial septum; interatrial shunting; internal anal sphincter; International Acquired Immune Deficiency Syndrome Society; intra-amniotic saline
IASA interatrial septal aneurysm
IASD interatrial septal defect; inter-auricular septal defect
IASH isolated asymmetric septal hypertrophy
IASHS Institute for Advanced Study in Human Sexuality
IASL International Association for Study of the Liver
IASLC International Association for the Study of Lung Cancer
IASP International Association for Study of Pain
IASSH Italian Acute Stroke Study with Hemodilution
IAT instillation abortion time; intrinsic accuracy test; invasive activity test; iodine azide test
IATI, IaTI inter-alpha-trypsin inhibitor
IATIL inter-alpha-trypsin inhibitor, light chain
IAV intermittent assisted ventilation; intra-arterial vasopressin
IAVB incomplete atrioventricular block
IAVI International AIDS Vaccine Initiative
IAVM intramedullary arteriovenous malformation
IB idiopathic blepharospasm; immune body; inclusion body; index of body build; infectious bronchitis; instantaneous boundary; Institute of Biology; interface bus; ipratropium bromide
Ib endometrial carcinoma in situ, length of uterine cavity more than 8 cm [International Federation of Gynecologists and Obstetricians (FIGO) classification]
I_b background sodium current [heart electrical activity]
ib in the same place [Lat. ibidem]
IBAT intravascular bronchoalveolar tumor
IBAV Ibaraki virus
IBB intestinal brush border
IBBB intra-blood-brain barrier
IBBBB incomplete bilateral bundle branch block
IBC inflammatory breast cancer; inflammatory breast carcinoma; Institutional Biosafety Committee; iodine-binding capacity; iron-binding capacity; isobutyl cyanoacrylate
IBCA isobutyl-2-cyanoacrylate
IBC-R Injury Behavior Checklist-Revised
IBD identical-by-descent; inflammatory bowel disease; integrated balloon display; irritable bowel disease
IBDlist Inflammatory Bowel Disease List [database]
IBDQ Inflammatory Bowel Disease Questionnaire
IBDV infectious bursal disease virus
IBE immunoreactive beta-endomorphin; International Bureau for Epilepsy
IBED Inter-African Bureau for Epizootic Diseases
IBEN individual behavior [UMLS]
IBF immature brown fat; immunoglobulin-binding factor; Insall-Burstein-Freeman [total knee instrumentation]; intestinal blood flow
IBG insoluble bone gelatin
IBI intermittent bladder irrigation; ischemic brain infarction
ibid in the same place [Lat. ibidem]
IBIDS ichthyosis-brittle hair-impaired intelligence-decreased fertility-short stature [syndrome]; International Bibliographic Information on Dietary Supplements [NIH database]
IBIS Invasive Bacterial Infection Surveillance [study]
IBK infectious bovine keratoconjunctivitis
IBM inclusion body myositis; intact bridge mastoidectomy
IBMP International Board of Medicine and Psychology
IBMTR International Bone Marrow Transplantation Registry
IBMX 3-isobutyl-1-methylxanthine
IBNR incurred but not reported
IBO information-bearing object
IB OCA oculocutaneous albinism type IB
IBP insulin-like growth factor binding protein; International Biological Program; intra-aortic balloon pumping; iron-binding protein
IBPMS indirect blood pressure measuring system
IBQ Illness Behavior Questionnaire
IBR infectious bovine rhinotracheitis
IBRO International Brain Research Organization
IBRV infectious bovine rhinotracheitis virus
IBS identical-by-state; imidazole buffered saline; immunoblastic sarcoma; integrated backscatter; Iowa Breakfast Study; irritable bowel syndrome; isobaric solution
IBSA iodinated bovine serum albumin
IBSN infantile bilateral striated necrosis
IBSP integrin-binding sialoprotein
IBSS International Bibliography of the Social Sciences
IBT ink blot test
IBTR ipsilateral breast tumor recurrence
IbTX iberiotoxin
IBU ibuprofen; international benzoate unit
i-Bu isobutyl
IBV infectious bronchitis vaccine; infectious bronchitis virus; Ivorian bacilliform virus
IBW ideal body weight
IC icteric, icterus; immune complex; immunoconjugate; immunocytochemistry; immunocytotoxicity; impedance cardiogram; imprinting center; indirect calorimetry; individual counseling; infection control; inferior colliculus; information and communication; informed consent; inner canthal [distance]; inorganic carbon; inspiratory capacity; inspiratory center; institutional care; integrated circuit; integrated concentration; intensive care; intercostal; intermediate care; intermittent catheterization; intermittent claudication; internal capsule; internal carotid; internal conjugate; interstitial cell; intracapsular; intracardiac; intracarotid; intracavitary; intracellular; intracerebral; intracisternal; intracranial; intracutaneous; intraoperative cholangiography; irritable colon; islet cells; isovolumic contraction
IC 1/2/3 intermediate care 1/2/3
IC₅₀ inhibitory concentration of 50%
ICA immunocytochemical analysis; independent component analysis; internal carotid artery; intracranial aneurysm; islet cell antibody
ICAA International Council on Alcohol and Addictions; Invalid Children's Aid Association
ICAAC Interscience Conference on Antimicrobial Agents and Chemotherapy
ICAb islet cell antibody
IC-AFM intermittent-contact mode atomic force microscopy
ICAI intelligent computer-aided instruction
ICAM improved chemical agent monitor; induced endothelial cell adhesion molecule; integrated computer-aided manufacturing
ICAM-1, -2, -3 intracellular adhesion molecule 1, 2, 3
ICAMI International Committee Against Mental Illness
ICAO internal carotid artery occlusion
ICARIS Intervention Cardiology Risk Stratification [study]
ICARUS Islet Cell Antibody Register User Study
ICASO International Committee of Acquired Immunodeficiency Syndrome Service Organisations
ICAT International Comprehensive Anatomical Terminology
ICBDMS International Clearinghouse for Birth Defects Monitoring Systems
ICBF inner cortical blood flow
ICBG idiopathic calcification of basal ganglia
ICBM International Consortium for Brain Mapping
ICBP intracellular binding protein
ICBPG improved chemical and biological protective glove
ICBR increased chromosomal breakage rate
ICC immunocompetent cells; immunocytochemistry; Indian childhood cirrhosis; infection control committee; intensive coronary care; interchromosomal crossing over; interclass correlation coefficient; intercluster constraint; internal conversion coefficient; International Certification Commission; interventional cardiac center; intraclass correlation coefficient; intracranial cavity; invasive cervical cancer; Italian [Committee for TNM] Cancer Classification
ICCE intracapsular cataract extraction
iCCK immunoreactive cholecystokinin
ICCM idiopathic congestive cardiomyopathy
ICCR International Committee for Contraceptive Research
ICCS International Classification of Clinical Services
ICCU intensive coronary care unit; intermediate coronary care unit
ICD I-cell disease; immune complex disease; impedance cardiogram; implantable cardioverter-defibrillator; impulse-control disorder; induced circular dichroism; initial cardioverter-defibrillator; Institute for Crippled and Disabled; intercanthal distance; International Center for the Disabled; International Classification of Diseases, Injuries, and Causes of Death; International Statistical Classification of Diseases and Health-related Problems; intracardiac defibrillator; intracervical device; intrauterine contraceptive device; ischemic coronary disease; isocitrate dehydrogenase; isolated conduction defect
ICD-10 International Statistical Classification of Diseases and Health-related Problems, 10th Revision
ICDA International Classification of Diseases, Adapted
ICD/BPA International Classification of Diseases as adapted by the British Paediatric Association
ICDC implantable cardioverter-defibrillator catheter
ICD-9-CM International Classification of Diseases, 9th Revision-Clinical Modification
ICDH isocitrate dehydrogenase
ICD-O International Classification of Diseases-Oncology
ICDRC International Contact Dermatitis Research Center
ICDREC International Computer Database for Radiation Accident Case Histories
ICDS Integrated Child Development Scheme; International Cardiac Doppler Society
ICE ice, compression, elevation; ichthyosis-cheek-eyebrow [syndrome]; immunochemical evaluation; integrated clinical encounter; integration, codification and evaluation; interleukin converting enzyme; intracardiac echocardiography; iridocorneal endothelial [syndrome]
ICECA International Committee for Electronic Communication on Acquired Immunodeficiency Syndrome
ICECG intracardiac electrocardiography
ICED Index of Co-existent Diseases
ICEEG intracranial electroencephalography
ICER inducible cyclic adenosine monophosphate [cAMP] early repressor
ICES information collection and evaluation system
ICET induced current electrical impedance tomography
ICEUS intracaval endovascular ultrasound
ICF immunodeficiency-centromeric; instability-facial anomalies [syndrome]; indirect centrifugal flotation; intensive care facility; intercellular fluorescence; interciliary fluid; intermediate-care facility; International Cardiology Foundation; intracellular fluid; intravascular coagulation and fibrinolysis
ICFA incomplete Freund adjuvant; induced complement-fixing antigen
ICFF important clinical field finding
ICF(M)A International Cystic Fibrosis (Mucoviscidosis) Association
ICF-MR intermediate-care facility for the mentally retarded
ICF/MR intensive care facilities for mental retardation
ICG impedance cardiogram; impedance cardiography; indocyanine green; isotope cisternography
ICGC indocyanine-green clearance