[ I ]

• 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

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