+ Sortable table Abbreviation Meaning 131I or I131 iodine-131 (aka radioactive iodine or radioiodine) IA intra-arterialintra-articular IAA insulin autoantibody IABP intra-aortic balloon pump IADL instrumental activity of daily livinghttps://my.clevelandclinic.org/health/articles/activities-of-daily-living-adls IADLs instrumental activities of daily livinghttps://my.clevelandclinic.org/health/articles/activities-of-daily-living-adls IAI intra-amniotic infection IBC inflammatory breast cancer IBD inflammatory bowel disease IBS irritable bowel syndrome IC ileocecalimmunocompromised informed consent intensive care interstitial cystitis immune complex intracardiac ICC immunocytochemistry ICD implantable cardioverter-defibrillator intercostal drain ICDS Integrated Child Development Services Program ICD-10 International Classification of Diseases, 10th Revision ICF intracellular fluid ICG impedance cardiography ICH intracerebral hemorrhage ICI intracervical insemination ICM ischemic cardiomyopathy ICP intracranial pressure ICS intercostal space inhaled corticosteroids internal carotid stenosis ICSI intracytoplasmic sperm injection ICCU intensive cardiac care unit ICU intensive care unitIDidentifying data infectious disease infectious doseintellectual disability I&D incision and drainage (how to treat an abscess) IDA iron deficiency anemia IDC idiopathic dilated cardiomyopathy indwelling catheterinfiltrating ductal carcinoma IDDM insulin-dependent diabetes mellitus (now called diabetes mellitus type 1) IDL intermediate-density lipoprotein IDP infectious disease precautions IE infective endocarditis IF immunofluorescence IFG impaired fasting glycaemia Ig immunoglobulin IgA immunoglobulin A IgAV IgA vasculitis (formerly known as Henoch–Schönlein purpura) IgD immunoglobulin D IgE immunoglobulin E IGF insulin-like growth factor IgG immunoglobulin G IgG4-RD IgG4-related disease IgG4-RKD IgG4-related kidney disease IgG4-ROD IgG4-related ophthalmic disease IgG4-TIN IgG4-related tubulointerstitial nephritis IgM immunoglobulin M IGT impaired glucose tolerance IHC immunohistochemistry IHD ischaemic heart disease IHPS infantile hypertrophic pyloric stenosis IHSS idiopathic hypertrophic subaortic stenosis (hypertrophic cardiomyopathy) II intellectual impairment IIEF International Index of Erectile Function ILD interstitial lung disease ILI Influenza-like illness IM intramuscular IMA inferior mesenteric artery IMB intermenstrual bleed (bleeding between periods) IMI intramuscular injection IMM intramyometrial IMN infectious mononucleosis intramedullary nail IMRT intensity-modulated radiotherapy IMT inflammatory myofibroblastic tumor intima-media thickness IMV intermittent mandatory ventilation (see mechanical ventilation) Inc incomplete INF(-α/-β/-γ) interferons -α/-β/-γ INFX infection INH inhaledIsoniazid Inj injection INR international normalized ratio Int internal INT intermittent needle therapy IO intraosseous infusion I&O input/intake and output IODM infant of diabetic mother IOL induction of labor intraocular lens IOP intra-occular pressure IP interphalangeal joint iPSCs induced pluripotent stem cells IPF idiopathic pulmonary fibrosis IPG Implantable Pulse Generator IPH intraparenchymal hemorrhage or intraperitoneal hemorrhage or idiopathic pulmonary hemosiderosis IPMN Intraductal papillary mucinous neoplasm IPPB intermittent positive pressure breathing (see mechanical ventilation) IPPV intermittent positive pressure ventilation (see mechanical ventilation) IPS intraperitoneal sounds IQ intelligence quotient IR insulin resistanceinterventional radiology IRDS infant respiratory distress syndrome IRIDA inherited iron-refractory iron deficiency anemia IRIS Immune reconstitution inflammatory syndrome IS Incentive Spirometry ISA intrinsic sympathomimetic activity ISDN isosorbide dinitrate ISH isolated systolic hypertension ISMN isosorbide mononitrate ISQ no change (from Latin, in status quo) IT immature teratoma intrathecal ITP idiopathic thrombocytopenic purpura immune-mediated thrombocytopenic purpura ITU intensive treatment unit (or intensive therapy unit) IUCD intrauterine contraceptive device IU international units IUD intrauterine death intrauterine device IUFD intrauterine foetal demise IUGR intrauterine growth restriction IUI intrauterine insemination IUP intrauterine pregnancy IUPC intrauterine pressure catheter IUS intrauterine system IUT intrauterine transfusion IV intravenous IVC inferior vena cava IVD Intervertebral disc IV-DSA intravenous digital subtraction angiography IVDU intravenous drug user IVF in vitro fertilization intravenous fluids IVH intraventricular hemorrhageIVIG intravenous immunoglobulin IVP intravenous pyelogram IVPB intravenous piggyback (i.v. short-term infusion) IVPG Intravenous pyogenic granulomaIVSSIntravenous Soluset IVU intravenous urogram IVUS intravascular ultrasound Ix Investigation(s)

References