(434 abbreviations)

I&D, incision and drainage

I&E, internal and external.

I&O, intake and output (as for fluids).

I, isoleucine.

I.M., intramuscular

I.Q., intelligence quotient

I.V., IV, intravenous

IA, incurred accidentally.

IA, intra-arterial.

IA, invasive aspergillosis.

IABP, intra-aortic balloon pump

IAC, infinite amplitude clipping.

IAC, internal acoustic canal.

IACR, International Agency on Cancer Research.

IADH, inappropriate secretion of antidiuretic hormone.

IADHS, inappropriate secretion of antidiuretic hormone syndrome.

IAHL, infection-associated hemophagocytic lymphohistiocytosis.

IAHS, infection-associated hemophagocytic syndrome.

IAP, inhibitor of apoptosis.

IAPM, International Association of Medical Prosthesis Manufacturers.

IARC, International Agency for Research on Cancer.

IAS, Indian Arthroscopy Society.

IASLC, International Association for the Study of Lung Cancer.

IASP, International Association for the Study of Pain.

IATMR, tetramethylrhodamine-iodoacetamide.

IBC, idiopathic bone cavity.

IBC, idiotype binding capacity.

IBC, immunoglobulin bearing cells.

IBC, incidence of bacteria-carrier.

IBC, indirect bilirubin concentrations.

IBC, inflammatory breast cancer.

IBC, Injury Behavior Checklist.

IBC, Inoue balloon catheter.

IBC, Institutional Biosafety Committee.

IBC, insulin binding capacity.

IBC, integrated backscatter coefficient.

IBC, Integrated Broadband Communication.

IBC, International BioClinical.

IBC, International Bioethics Committee (of UNESCO)

IBC, International Biophysics Corporation.

IBC, International Business Communications.

IBC, interval breast cancer (breast cancer diagnosed within 1 year of a negative annual screening examination)

IBC, intraductile breast cancer.

IBC, invasive bladder cancer.

IBC, invasive breast cancers.

IBC, iodine binding capacity.

IBC, ionophore of bivalent cations.

IBC, iron binding capacity.

IBC, isobutyl cyanoacrylate.

IBC, isobutylchloroformate.

IBD, inflammatory bowel disease.

IBE, individual bioequivalence.

IBG, iliac bone graft.

IBIDS syndrome, ichthyosis, brittle hair, impaired intelligence, decreased fertility, short stature.

IBMTR, International Bone Marrow Transplant Registry.

IBP, Ibuprofen.

IBS, irritable bowel syndrome.

IBSE, International Federated Body on Scoliosis Etiology.

IBW, ideal body weight.

IC, between meals.

IC, inspiratory capacity.

IC, intensive care.

IC, intracerebral.

ICA, immunohistochemical assay.

ICA, internal carotid artery.

ICAM, intercellular adhesion molecules.

ICAM-1, intercellular adhesion molecule 1 (endothelial cell adhesion molecule).

ICAO, International Civil Aviation Organization.

ICARE, International Cancer Alliance for Research and Education (ICARE).

ICASS, Internal Cooperative Agreement Support and Services.

ICBG, iliac crest bone graft.

ICC, inferior colliculus.

ICC, intensive coronary care.

ICCG, International Collaborative Cancer Group

ICCPO, Icelandic Childhood Cancer Parent Organisation.

ICCPO, International Confederation of Childhood Cancer Parent Organizations

ICCU, intensive coronary care unit.

ICD, implantable-cardioverter defibrillator.

ICD, International Statistical Classification of Disease, published by WHO.

ICD, isocitrate dehydrogenase.

ICD-10, International Classification of Diseases, 10th Revision, maintained by WHO.

ICD-9, International Classification of Diseases, 9th Revision, online sponsor: UCD Medical Informatics.

ICD-9-CM, International Classification of Diseases, 9th Revision, clinical modification.

ICDA, international classification of diseases, adapted.

ICD-O M, morphologic rubric of ICD-O.

ICD-O T, topographic rubric of ICD-O.

ICD-O, International Classification of Diseases for Oncology (coding system).

ICEID 2000, The International Conference on Emerging Infectious Diseases 2000.

ICER, incremental cost-effectiveness ratio.

ICF, informed consent form.

ICF, intensive care facility.

ICF, intermediate care facility.

ICF, intracellular fluid.

ICFX, intracapsular fracture.

ICH, human infantile cortical hyperostosis.

ICH, International Conference on Harmonization (GCP).

ICM, intercostal margin.

ICN, intensive care nursery.

ICOE, International Center for Orthopaedic Education (US).

ICP, intracranial pressure.

ICPA, International Chiropractic Pediatric Association.

ICRF, Imperial Cancer Research Fund (UK).

ICRS , International Cartilage Repair Society.

ICS, intercostal space.

ICS, International Continence Society.

ICSF, International College of Surgery of the Foot.

ICSI, Intracytoplasmic sperm injection.

ICSI, intracytoplasmic sperm injection.

ICT, intermittent cervical traction.

ICU, intensive care unit.

ID, during the day.

ID, identification.

ID, ill defined.

ID, ineffective dose.

ID, infectious disease.

ID, internal diameter.

ID, intradermal.

IDA, iron deficiency anemia.

IDC, infiltrating ductal carcinoma.

IDC, interdigitating cells.

IDD, insulin dependent diabetes.

IDD, internal disc disruption.

IDDM, insulin-dependent diabetes mellitus, type I.

IDET, intradiscal electrothermal therapy.

IDK, internal derangement of the knee.

IDU, injection drug users.

IDW, ideal body weight.

IE, inner ear.

IEC, independant ethics committee.

IEC, Information, Education, and Communication.

IEEE, Institute of Electrical and Electronics Engineers.

IESS, Intergroup Ewing's Sarcoma Study (USA).

IFA, indirect immunofluorescent IgG antibody.

IFC, International Finance Corporation.

IFE, immunofixation electrophoresis.

IFEB, International Federation of Eye Banks.

IFG, impaired fasting glucose.

IFMBE, International Federation for Medical and Biological Engineering.

IFN, interferon.

IFOSA, International Federation of Spine Associations.

IFPOS, International Federation of Pediatric Orthopaedic Societies.

IFR, inspiratory flow rate.

IFSC, International Federation of Surgical Colleges (WHO non-governmental organizations).

IFSSH, International Federation of Societies for Surgery of the Hand.

IG, immature granulocyte.

IgA, immunoglobulin A.

IgD, immunoglobulin D.

IgE, immunoglobulin E.

IGF, insulin-like growth factor (somatomedin).

IGF, insulin-like growth factor.

IGFBP, insulin-like growth factor binding protein.

IGFBP-5, insulin-like growth factor-binding protein-5.

IgG, immunoglobulin G.

IGHD IB, isolated growth hormone deficiency type IB.

IgM, immunoglobulin M.

IgSF, Ig superfamily.

IGT, impaired glucose tolerance.

IGV, immunoglobulin variable region gene.

IH, infectious hepatitis

IH, interval history.

IHA, inhibition of hemagglutination.

IHC, immunohistochemistry.

IHC, Internet Healthcare Coalition.

IHD, ischemic heart disease.

IHR, intrinsic heart rate.

IHS, International Hip Society.

IHSS, idiopathic hypertrophic subaortic stenosis.

IHT, internittent hypoxic training.

IID, insulin dependent diabetes.

IIF, indirect immunofluorescence.

IIS, Intergalactic Institute of Shoulderology.

IITS, International Intradiscal Therapy Society.

IL, ilio-lumbar.

IL, interleukine.

IL2, Interleukin2.

ILC, interstitial laser coagulation.

Ile, isoleucine.

ILL, intermediate lymphocytic lymphoma.

ILO, International Labor Office.

ILP, isolated limb perfusion.

ILSG, International Lymphoma Study Group.

IM, infectious mononucleosis.

IM, internal medicine.

IM, intramedullary.

IM, intramuscular.

IMBC, indirect maximum breathing capacity.

Im-DCH-beta-Gal, O-[4-(1-imidazolyl)butyl]-2,3-dicyano-1,4-hydroquinonyl beta-D-galactopyranoside.

IME, independent medical examiner.

IMF, International Monetary Fund.

IMF, International Myeloma Foundation.

IMHO, in my humble opinion.

IMI, Imipramine (Tofranil).

IMI, intramuscular injection.

IML, intracranial mass lesion.

IMLAS, International Musculoskeletal Laser Society.

IM-like, infectious mononucleosis-like.

IMM, immediate.

IMM, immobilize.

IMM, immunize.

IMMC, interdigestive migratory motor complex.

IMO, in my opinion.

IMP, immuno magnetic particles.

Imp, impression.

IMP, improved.

IMP, inosine 5'-monophosphate.

IMPOX, immunoperoxidase.

IMRI, Interventional Magnetic Resonance Imaging.

IM-ROD, intramedullary rod.

IMRT, intensity-modulated radiotherapy.

IMS, immunomagnetic separation.

INC, incomplete.

INC, inconclusive.

INC, increase.

INCB, International Narcotics Control Board of United Nations.

IND, independent.

IND, Indomethacin.

IND, investigational new drug (see FDA).

INF, infant.

INF, infarction.

INF, infected.

INF, inferior.

Inf., infusion.

INFA, International Neurofibromatosis Association.

INH, isoniazid.

INJ, inject; injection.

INJ, injury.

INK, injury not known.

INL, International Narcotics and Law Enforcement Affairs Bureau (DOS).

iNO, inhaled nitric oxide.

INR, intermittent.

INR, International Normalized Ratio (standard of care for the management of anticoagulation).

INR, interval.

INS, Immigration and Naturalization Service.

INS, insulin.

INS, insurance.

InsP(3), inositol 1,4,5-trisphosphate.

INSS, International Neuroblastoma Staging System.

int, internal.

Int., internal.

Intra, inside (e.g. intracavitary); during (e.g. intraoperative = during surgery).

IO, inferior oblique.

IO, intestinal obstruction.

IOA, Indian Orthopaedic Association.

IOFB, intraocular foreign body.

IOL, intraocular lens.

IOM, interosseous membrane.

IOP, intraocular pressure.

IORT, intraoperative radiotherapy.

IOU, intensive therapy observation unit.

IP, interphalangeal.

IP, intra-peritoneal.

IP₃, inositol-1,4,5,-triphsophate.

IPA, 5-(N-methyl-N-isopropyl) amiloride.

IPA, idiopathic premature adrenarche.

IPA, iInvasive pulmonary aspergillosis.

IPA, immunoprecipitation assay.

IPA, Independent Practice Associations.

IPA, indices of platelet activation.

IPA, Indol-3-pyruvic acid.

IPA, Indole-3-propionic acid.

IPA, inferior phrenic artery.

IPA, infiltrating pancreatic ductal adenocarcinoma.

IPA, Information Processing Ability.

IPA, inherited paternal HLA antigens.

IPA, integrated pulse amperometry.

IPA, interference pattern analysis.

IPA, International Paediatric Association.

IPA, International Pharmaceutical Abstracts.

IPA, intimate partner abuse.

IPA, intralobar pulmonary arteries.

IPA, intraperitoneal.

IPA, intrapulmonary arteries.

Ipa, invasion plasmid antigens proteins.

IPA, iodo-l-phenylalanine.

IPA, ipamorelin.

IPA, irrigation pipe-associated.

IPA, isopropyl alcohol.

IPA, isopropylamine.

IPA, Isopropylantipyrine.

Ipa, pasiniazid.

IPA-EST, indophenyl acetate esterase.

IPC(foot), intermittent pneumatic foot compression.

IPC, in-process control.

IPE, iris pigment epithelium.

IPHC, International Prostate Health Council.

IPHC, intraperitoneal hyperthermic perfusion chemotherapy.

IPHC, isoproterenol hydrochloride.

IPI, international prognostic index.

IPK, isolated perfused rat kidney.

IPOP, immediate postsurgical prosthetics.

IPPA, inspection, palpation, percussion, auscultation.

IPPB, intermittent positive pressure breathing.

IPPO, intermittent positive-pressure inflation with oxygen.

IPPR, intermittent positive pressure respiration.

IPPS, Independent Power Producers.

IPPV, intermittent positive pressure ventilation.

IPRAF, International Plastic, Reconstructive and Aesthetic Foundation.

IPRAS, International Confederation for Plastic, Reconstructive and Aesthetic Surgery.

IPSID, immunoproliferative small intestinal disease.

IPSM, Institute for Preventative Sports Medicine.

IPSP, inhibitory postsynaptic potential.

IPSP, The Italian Prognostic System Project.

IPSS, International Prostate Symptom Score.

IPTG, isoproylthiogalactoside.

IPV, inactivated poliovirus vaccine.

IPX, immunoperoxidase.

IPx, impaired glucose tolerance.

IPx, phosphoinositide.

IQ, intelligence quotient.

IQC, instrument quality control.

IR, immunoreactive.

IR, infrared.

IR, internal rotation.

IR, intracellular receptor.

Ir, iridium.

IRB, institutional review board.

IRBBB, incomplete right bundle-branch block.

IRE, internal rotation in extension.

IRF, internal rotation in flexion.

IRI, immunoreactive insulin.

IRMA, intraretinal microvascular abnormalities.

IRrs, Inspiratory Rrs.

IRS, Internal Revenue Service.

IRSSD, International Research Society for Spinal Deformities.

IS, in situ.

IS, intercostal space.

ISA, intrinsic sympathomimetic activity.

ISAC, International Society for Analytical Cytology.

ISAG, International Society for Animal Genetics.

ISAK, International Society for the Advancement of Kinathropometry.

ISAKOS, International Society of Arthroscopy, Knee Surgery, and Orthopaedic Sports Medicine (also: AAOS Specialty Societies).

ISAZ, International Society for Anthrozoology.

ISB, International Society of Biomechanics.

ISBS, International Society of Biomechanics in Sports.

ISC, instrument standardization and calibration.

ISCAS, International Society for Computer Aided Surgery.

ISDRF, International Spinal Development & Research Foundation.

ISEP, International Society of Educators in Physiotherapy.

ISG, immune serum globulin.

ISG, International Shoulder Group.

ISH, in situ hybridization.

ISH, isolated systolic hypertension.

ISHLT, the International Society for Heart and Lung Transplantation.

ISI, international sensitivity index.

ISIS, International Spinal Injection Society.

ISL, interscapular line.

ISM, indolent systemic mastocytosis.

ISMISS, International Society for Minimal Intervention in Spinal Surgery.

ISO, isoflurane.

ISOST, Internet Society of Orthopaedic Surgery and Traumatology.

ISP, intraocular silicone prosthesis.

ISPO, International Society for Prosthetics and Orthotics.

ISR, induced systemic resistance.

ISS, Integrated Summary of Safety.

ISS, International Society of Surgery.

ISSC, investigative site support center.

ISSI, Interview Schedule of Social Integration.

IST, insulin shock therapy.

IT, idiopathic thrombocythemia.

IT, individual therapy.

IT, inhalation therapy.

IT, intensive therapy.

IT, intermediate trophoblast.

IT15,-interesting transcript 15 in Hungtington disease

ITB, iliotibial band.

ITC, interagency testing committee.

ITP, idiopathic thrombocytopenic purpura.

ITP, ion transport peptide.

ITs, immunotoxins.

ITT, internal tibial torsion.

ITT, interstitial tumor therapy.

ITU, Intensive Therapy Unit.

I-type, intestinal type.

IU, immunizing unit, international units.

IU, intrauterine.

IUCD, intra-uterine contraceptive device.

IUD, intrauterine device.

IUGR, intrauterine growth retardation.

IUP, intrauterine pregnancy.

IUT, intrauterine transfusion.

IV, in vitro.

IV, in vivo.

IV, intervertebral.

IV, intravascular.

Iv, intravenous, intravenous line.

IV, intravenous.

IVC, inferior vena cava.

IVC, intravenous cholangiography.

IVC, isovolumic contraction.

IVCD, intraventricular conduction defect.

IVD, intervertebral disc.

IVDA, intravenous drug addict.

IVDU, intravenous drug use/user.

IVEC, in vitro expression cloning.

IVF, in vitro fertilization.

IVH, intrafascial vaginal hysterectomy.

IVH, intravenous hyperalimentation.

IVH, intraventricular hemorrhage.

IVI, intravenous injection.

IVIG, intravenous immunoglobulin.

IVJC, intervertebral joint complex.

IVP, intravenous pyelogram.

ivpb, intravenous piggyback infusion.

IV-QAR, in vitro quantitative autoradiography.

IVR, idioventricular rhythm.

IVR, iliac vascular resistance.

IVR, immersive virtual reality.

IVR, in vitro released.

IVR, in vivo recovery.

IVR, inhibitor of virus replication.

IVR, interactive voice response.

IVR, intermediate view reprojection.

IVR, intervascular ridging.

IVR, interventional radiology.

IVR, interventional vascular radiology.

IVR, intestinal vascular resistance.

IVR, intramolecular vibrational energy redistribution.

IVR, intrarenal vascular resistance.

IVR, intravaginal ring.

IVR, intravenous regimen.

IVR, intraventricular reentry.

IVR, inverted repeats.

IVR, in-vitro-retinae.

IVR, isovolumetric regulation.

IVR, isovolumic relaxation.

IVR, ivermectin.

IVRA, intravenous regional anesthesia.

IVR-OD, inverted repeat outer domain.

IVSD, interventricular septal defect.

IVU, intravenous urography.

IVUS, intravascular ultrasonography.

IvVD, intravenous administration of high and intermittent doses of calcitriol.

IW, infarction weight.

IWMF, International Waldenstrom's Macroglubulinemia Foundation.