Dictionary of Medical Acronyms & Abbreviations

[ I ]

• IPOF  immediate postoperative fitting
• IPOP  immediate postoperative prosthesis
• IPP  independent practice plan; individual patient profile; inflatable penile prosthesis; inorganic pyrophosphate; inspiratory plateau pressure; intermittent positive pressure; intracisternal A particle-promoted polypeptide; intrahepatic partial pressure; intrapericardial pressure
• Ipp  interpulse potential
• IPPA  inspection, palpation, percussion, and auscultation; iodophenylpentadecanoic acid
• IPPB  intermittent positive-pressure breathing
• IPPB-I  intermittent positive-pressure breathing-inspiration
• IPPHS  International Primary Pulmonary Hypertension Study
• IPPI  interruption of pregnancy for psychiatric indication
• IPPO  intermittent positive-pressure inflation with oxygen
• IPPPSH  International Prospective Primary Prevention Study in Hypertension
• IPPR  integrated pancreatic polypeptide response; intermittent positive-pressure respiration
• IPPV  intermittent positive-pressure ventilation
• IPPYV  Ippy virus
• IPQ  intimacy potential quotient
• IPR  imidozaline preferring receptor; immediate phase reaction; independent professional review; Institute of Process Control and Robotics [Germany]; insulin production rate; interval patency rate; intraparenchymal resistance; ipratropium; iproniazid
• IP₃R  inositol 1,4,5-triphosphate receptor
• i-Pr  isopropyl
• IPRD  intellectual product [UMLS]
• IPRL  isolated perfused rat liver or lung
• iProClass  integrated protein classification
• IPRT  interpersonal reaction test
• IPS  idiopathic pain syndrome; idiopathic postprandial syndrome; immersive projection system; inches per second; infundibular pulmonary stenosis; initial prognostic score; intensive care unit point system; intermittent photic stimulation; interpractice system; intrapartum stillbirth; intraperitoneal shock; ischiopubic synchondrosis
• ips  inches per second
• IPSB  index of proximity to stability boundary
• IPSC  inhibitory postsynaptic current
• IPSC-E  Inventory of Psychic and Somatic Complaints in the Elderly
• IPsec  Internet protocol security
• IPSF  immediate postsurgical fitting
• IPSID  immunoproliferative small intestine disease
• IPSP  inhibitory postsynaptic potential
• IPT  immunoperoxidase technique; immunoprecipitation; information processing theory; interpersonal psychotherapy; isoniazid preventive therapy; isoproterenol
• IPTG  isopropyl-β-thiogalactopyranoside; isopropyl thiogalactose
• iPTH  immunoassay for parathyroid hormone; immunoreactive parathyroid hormone
• IPTT  Initiative for Pharmaceutical Technology Transfer
• IPTX  intermittent pelvic traction
• IpTX  imperatoxin
• IpTxa  imperatoxin A
• IpTxi  imperatoxin I
• IPU  inpatient unit
• IPV  inactivated poliomyelitis vaccine or virus; infectious pustular vaginitis; infectious pustular vulvovaginitis; interpersonal violence, intimate partner violence; intrapulmonary vein
• IPW  interphalangeal width
• IPZ  insulin protamine zinc
• IQ  inhibitory quotient; institute of quality; intelligence quotient
• IQAS  internal quality assurance system
• IQB  individual quick blanch
• IQCODE  information questionnaire on cognitive decline in the elderly
• IQOLA  International Quality of Life Assessment [project]
• IQR  interquartile range
• IQ&S  iron, quinine, and strychnine
• IQW  interactive query workstation
• IR  drop of voltage across a resistor produced by a current; ileal resection; immune response; immunization rate; immunoreactive; immunoreagent; in room; index of response; impedance rheography; individual reaction; inferior rectus [muscle]; inflow resistance; information retrieval; infrared; infrarenal; inside radius; insoluble residue; inspiratory reserve; inspiratory resistance; insulin resistance; intermediate representation; internal resistance; internal rotation; interventional radiology; intrarectal; intrarenal; inversion recovery; inverted repeat; irritant reaction; ischemia-reperfusion; isovolumic relaxation
• I-R  Ito-Reenstierna [reaction]
• I/R  ischemia/reperfusion
• Ir  immune response [gene]; iridium
• ir  immunoreactive; intrarectal; intrarenal
• IRA  ileorectal anastomosis; immunoradioassay; immunoregulatory alpha-globulin; inactive renin activity; individual regression analysis; infarct-related artery; inwardly rectifying [current]
• IR-ACTH  immunoreactive adrenocorticotropic hormone
• IRAD  International Registry of Aortic Dissection
• IrANP, ir-ANP  immunoreactive atrial natriuretic peptide
• IR-APAP  immediate-release acetaminophen
• IRAR  Immunization Registry Annual Report
• IRAS  Insulin Resistance Atherosclerosis Study
• IR-AVP  immunoreactive arginine-vasopressin
• IRB  immunoreactive bead; institutional review board
• IRBBB  incomplete right bundle branch block
• IRBC  immature or infected red blood cell
• ir-BNP  immunoreactive brain natriuretic peptide
• IRBP  intestinal retinol-binding protein
• IRC  inspiratory reserve capacity; instantaneous resonance curve; International Red Cross; International Research Communications System
• IRCA  intravascular red cell aggregation
• IRCC  International Red Cross Committee
• IRCU  intensive respiratory care unit
• IRD  infantile Refsum disease; isorhythmic dissociation
• IrDA  infrared data association
• IRDP  insulin-related DNA polymorphism
• IRDS  idiopathic respiratory distress syndrome; infant respiratory distress syndrome
• IRE  intelligent rules element; internal rotation in extension; iron regulatory element; iron-responsive element; isolated rabbit eye
• IREBP  iron-responsive element binding protein
• IRED  infrared emission detection; infrared light-emitting diode
• IRES  internal ribosome entry site; ischemia residua
• IRF  idiopathic retroperitoneal fibrosis; impulse response function; installation response force; interferon regulatory factor; internal rotation in flexion
• IRFL  integral red fluorescence
• IRFPA  infrared focal plan array
• IRG  immunoreactive gastrin; immunoreactive glucagon
• IRGH  immunoreactive growth hormone
• IRGl  immunoreactive glucagon
• IRH  Institute for Research in Hypnosis; Institute of Religion and Health; intrarenal hemorrhage
• IRHCS  immunoradioassayable human chorionic somatomammotropin
• IRhGH  immunoreactive human growth hormone
• IRhPL  immunoreactive human placental lactogen
• IRI  immunoreactive insulin; [near]-infrared interreactance; insulin resistance index
• IRIA  indirect radioimmunoassay
• IRIg  insulin-reactive immunoglobulin
• IRIS  Integrated Risk Information System [NLM database]; interleukin regulation of immune system; International Research Information Service; Isostents for Reperfusion Intervention Study
• IRIV  immuno-potentiating reconstituted influenza virosome; Irituia virus
• IRK  inwardly rectifying potassium [channel]
• IRLED, IR-LED  infrared light emitting diode
• IRM  information resource management; innate releasing mechanism; insect resistance management; Institute of Rehabilitation Medicine
• IRMA  immunoradiometric assay; intraretinal microvascular abnormalities
• iRNA  immune ribonucleic acid; informational ribonucleic acid
• ir-NP  immunoreactive natriuretic peptide
• IROS  intelligent robots and systems; ipsilateral routing of signal
• IROX  iridium oxide
• IRP  immunoreactive plasma; immunoreactive proinsulin; incus replacement prosthesis; insulin-releasing polypeptide; interstitial radiation pneumonitis; intraocular retinal prosthesis
• IRPA  International Radiation Protection Association
• IRPA/INIRC  International Radiation Protection Association's International Non-Ionizing Radiation Committee
• IRPTC  International Registry of Potentially Toxic Chemicals
• IRR  insulin receptor-related receptor; intrarenal reflux
• Irr  irradiation; irritation
• IRRD  Institute for Research in Rheumatic Diseases
• irreg  irregularity, irregular
• irrig  irrigation, irrigate
• IRS  immunoreactive secretion; incident reporting scheme; infrared sensor; infrared spectrophotometry; insulin receptor species; insulin receptor substrate; insulin-related substrate; Intergroup Rhabdomyosarcoma Study; internal resolution site; International Rhinologic Society; Invasive Reperfusion Study; ionizing radiation sensitivity
• IRS-1  insulin receptor substrate 1
• IRS-2  insulin receptor substrate 2
• IRSA  idiopathic refractory sideroblastic anemia; iodinated rat serum albumin
• IRSE  inversion recovery spin-echo
• IRT  immunoreactive trypsin; interresponse time; interstitial radiotherapy; item response theory
• IRTIS  Integrated Radiation Therapy Information System
• IRTO  immunoreactive trypsin output
• IRTU  integrating regulatory transcription unit
• IRU  industrial rehabilitation unit; interferon reference unit
• IRV  inferior radicular vein; inspiratory reserve volume; intelligent radiology workstation; inverse ratio ventilation; Italian ringspot virus
• IrVd  Iresine viroid
• IRW  intelligent radiology workstation
• IRX  Information Retrieval Experimental Workbench
• IS  ileal segment; iliosacral; immediate sensitivity; immune serum; immunostaining; immunosuppression; impingement syndrome; incentive spirometer; index of sexuality; infant size; infantile spasms; information services; information system; infundibular septum; insertion sequence; in situ; insulin secretion; interaction site; intercellular space; intercostal space; interictal spike; international standards; interstitial space; interventricular system; intracardial shunt; intraspinal; intrasplenic; intrastriatal; intraventricular septum; invalided from service; inversion sequence; ischemic score; isoproterenol
• I-S  incudostapedial
• Is  incision superius
• is  in situ; island; islet; isolated
• ISA  ileosigmoid anastomosis; industry standard architecture [computer interconnection]; Information Science Abstracts; Instrument Society of America; intracarotid sodium amytal; intraoperative suture adjustment; intrinsic simulating activity; intrinsic stimulation activity; intrinsic sympathomimetic activity; iodinated serum albumin; irregular spiking activity
• I_sa  spatial average intensity [pulse]
• ISAAA  International Service for the Acquisition of Agri-Biotech Applications
• ISAAC  International Study of Asthma and Allergies in Childhood
• ISADH  inappropriate secretion of antidiuretic hormone
• ISAGA  immunosorbent agglutination assay
• ISAKEMP  Internet Security Association and Key Management Protocol
• ISAM  indexed sequential access manager; Intravenous Streptokinase in Acute Myocardial Infarction [trial]
• I_sapa  spatial average pulse average
• ISAPI  Internet server application program interface
• ISAPS  International Society of Aesthetic Plastic Surgery
• ISAR  Intracoronary Stenting and Antithrombotic Regimen [trial]
• I_sata  spatial average, temporal average intensity [pulse]
• ISB  incentive spirometry breathing
• ISBI  International Society for Burn Injuries
• ISBN  international standard book number
• ISBP  International Society for Biochemical Pharmacology
• ISBT  International Society for Blood Transfusion
• ISC  immunoglobulin-secreting cells; innerstrand crosslink; information system center; insoluble collagen; International Society of Cardiology; International Society of Chemotherapy; intensive supportive care; intershift coordination; interstitial cell; irreversibly sickled cell
• IS&C  image save and carry
• Isc  short circuit current
• ISCAB  Israeli Coronary Artery Bypass [study]
• ISCAS  International Society for Computer-Aided Surgery
• ISCB  International Society of Computational Biology
• ISCD  International Society of Clinical Densitometry
• ISCF  interstitial cell fluid
• ISCL  integrated secure communication layer
• ISCLT  International Society for Clinical Laboratory Technology
• ISCM  International Society of Cybernetic Medicine
• ISCN  International System for Human Cytogenetic Nomenclature
• ISCO  immunostimulating complex [vaccine]; Information System for Clinical Oncology [UK]
• ISCOAT  Italian Study on Complications of Oral Anticoagulant Therapy
• ISCOM  immune stimulatory complexes in matrix
• ISCP  infection surveillance and control program; International Society of Comparative Pathology
• ISCVS  International Society for Cardiovascular Surgery
• ISCW  immunosuppression of streptococcal wall [antigen]
• ISD  immunosuppressive drug; implant support device; Information Services Division; inhibited sexual desire; intermediate sulfate domain; interset distance; interstimulus distance; interventricular septal defect; isosorbide dinitrate
• ISDB  information source database
• ISDN  integrated services digital network; isosorbide dinitrate
• iSDR  inducible stable DNA replication
• ISE  inhibited sexual excitement; intelligent synthesis environment; International Society of Endocrinology; International Society of Endoscopy; inversion spin-echo pulse sequence; ion-selective electrode
• ISEFT  ion-sensitive field effect transistor
• ISEK  International Society of Electromyographic Kinesiology
• ISEM  immunosorbent electron microscopy
• ISF  interstitial fluid
• ISFC  International Society and Federation of Cardiology
• ISFV  interstitial fluid volume; Isfahan virus
• ISG  Ibopamine Study Group [trial]; immune serum globulin
• ISGE  International Society of Gastroenterology
• ISH  icteric serum hepatitis; in situ hybridization; internal self helper; International Society of Hematology; International Society of Hypertension; isolated septal hypertrophy; isolated systolic hypertension
• ISHAM  International Society for Human and Animal Mycology
• ISHT  International Society for Heart Transplantation [registry]
• ISHTAR  Implementing Secure Healthcare Telematics Application
• ISI  infarct size index; information science innovations; initial slope index; injection scan interval; injury severity index; Institute for Scientific Information; insulin sensitivity index; International Sensitivity Index; International Standardized Index; interstimulus interval
• ISIH  interspike interval histogram
• ISIS  image selected in vivo spectroscopy; imaging science and information system; Information Society Initiative for Standardization; information system-imaging system; integrated survey information system; intelligent selection and imaging studies; interactive system for image selection; International Infarct Survival [Trial]; International Study of Infarct Survival
• ISIS-2  Second International Infarct Survival [Trial]
• ISIT  interactive simulation and identification tool
• ISKDC  International Study of Kidney Diseases in Childhood
• ISKV  Issyl-Kul virus
• ISL  inner scapular line; instrumental spatial linkage; interspinous ligament; isoleucine
• ISLAND  Infant Size Limitation: Acute N-Acetylcysteine Defense [trial]
• ISLAV  Isla Vista virus
• ISM  industrial-scientific-medical [telemedicine, wireless transmission]; Information Source Map [UMLS]; International Society of Microbiologists; intersegmental muscle
• ISMB  Intelligent System for Molecular Biology
• ISMED  International Society on Metabolic Eye Disorders
• ISMH  International Society of Medical Hydrology
• ISMHC  International Society of Medical Hydrology and Climatology
• ISMHO  International Society of Mental Health Online