Dictionary of Medical Acronyms & Abbreviations

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[ I ]

I₁ | I₂ | I₃ | I₄ | I₅ | I₆ | I₇ |

ISMN isosorbide mononitrate
ISMO International Society of Mental Health Online [telemedicine]
ISN integrated service network; International Society of Nephrology; International Society of Neurochemistry
ISO incident safety officer; International Organization for Standardization; isoprenaline
iso isoproterenol; isotropic
ISOBM International Society of Oncodevelopmental Biology and Medicine
isol isolation, isolated
isom isometric
ISO-OSI International Organization for Standardization-Open Systems Interconnect
ISP distance between iliac spines; international standardized profile; Internet service provider; interspace; interstitial pressure; intraspinal; isoproterenol
I_sp spatial peak intensity [pulse]
ISPCR in situ polymerase chain reaction
ISPI integrated services protocol instrument
ISPO International Society for Prosthetics and Orthotics
ISPOCD International Study of Postoperative Cognitive Dysfunction
ISPOT International Study of Perioperative Transfusion
I_sppa spatial peak, pulse average intensity
I_spta spatial peak, temporal average intensity [pulse]
ISPS International Society of Pediatric Surgery
ISPT interspecies ovum penetration test
isq unchanged [Lat. in status quo]
ISR image service representative; information storage and retrieval; Institute for Sex Research; Institute of Surgical Research; insulin secretion rate; intelligent stroke registry
ISRE interferon-stimulated response element
ISRI Information Science Research Institute
ISRM International Society of Reproductive Medicine
ISS idiopathic short stature; infantile sialic acid storage [disease]; inferior sagittal sinus; injury severity scale; injury severity score; instructional support services; International Society of Surgery; invasive surgical staging; ion-scattering spectroscopy; ion surface scattering; isotonic saline solution
ISSCBW Inter-Service Sub-Committee on Biological Warfare [UK]
ISSD infantile sialic acid storage disease
ISSHP International Society for the Study of Hypertension in Pregnancy
ISSI interspinous surgical staging; interview schedule for social interaction; Israeli Study of Surgical Infections
ISSIR International Society of Sexual and Impotence Research
ISSN international standard serial number
ISSX International Society for the Study of Xenobiotics
IST inappropriate sinus tachycardia; insulin sensitivity test; insulin shock therapy; International Society on Toxicology; International Stroke Trial; Internet Security Team; isometric systolic tension
IS&T Society for Imaging Science and Technology
ISTAHC International Society of Technology Assessment in Healthcare
ISTC [Department of] Industry, Science and Technology of Canada
ISTD International Society of Tropical Dermatology
ISTU isometric strength testing unit
ISU International Society of Urology
I-sub inhibitor substance
ISUP International Society of Urological Pathology
ISV integrated simulation and verification
ISVP infectious subviral particle; intermediate subviral particle
ISW interstitial water
ISWI incisional surgical wound infection
ISY intrasynovial
IT iliotibial; immunological test; immunotherapy; immunotoxin; implantation test; individual therapy; inferior turbinate; information technology; inhalation test; inhalation therapy; injection time; insulin therapy; intensive therapy; intentional tremor; intermittent traction; internal telomere; interstitial tissue; intradermal test; intratesticular; intrathecal; intrathoracic; intratracheal; intratracheal tube; intratuberous; intratumoral; ischial tuberosity; isolation transformer; isomeric transition
I/T information technology; intensity/time
I&T intolerance and toxicity
IT² Internet technology for the twenty-first century
I-T interrupter technique
ITA inferior temporal artery; information transmission analysis; internal thoracic artery; International Tuberculosis Association
I_ta temporal average intensity [pulse]
ITAM immunoreceptor tyrosine activation motif
ITAV Itaituba virus
ITB iliotibial band
ITC imidazolyl-thioguanine chemotherapy; inferior temporal cortex; Interagency Testing Committee; information and communication technology; in the canal [hearing aid]; intrathecal chemotherapy; isothermal titration calorimetry; isothiocyanate
ITc International Table calorie
ITCM information technology for crises management teams
ITCP idiopathic thrombocytopenic purpura
ITCVD ischemic thrombotic cerebrovascular disease
ITD idiopathic torsion dystonia; intensely transfused dialysis; iodothyronine deiodinase
ITE information technology equipment; insufficient therapeutic effect; in the ear [hearing aid]; in-training examination; intrapulmonary interstitial emphysema
ITEA intermittent thoracic epidural anesthesia
ITEM information and communication technology for medicine
ITET isotonic endurance test
ITF Interagency Tack Force [Department of Health and Human Services]; interferon
ITFS iliotibial tract friction syndrome; incomplete testicular feminization syndrome
ITG integrin
ITGA integrin alpha
ITGB integrin beta
ITH interstitial hyperthermia
ITh, ith intrathecal
IThP intrathyroidal parathyroid
ITI inter-alpha-trypsin inhibitor; International Trachoma Initiative; intertrial interval
ITIH2 inter-alpha-trypsin inhibitor, heavy chain 2
ITIL inter-alpha-trypsin inhibitor, light chain
ITIM immunoreceptor tyrosine-based inhibition motif
ITIV Itimirim virus
ITL information technology laboratory
ITLC instant thin-layer chromatography
ITM improved Thayer-Martin [medium]; intermediate transient memory; intrathecal methotrexate; Israel turkey meningoencephalitis
ITMTX intrathecal methotrexate
ITO indium tin oxide
I_(to) transient outward current [heart electrical activity]
ITOU intensive therapy observation unit
ITP idiopathic thrombocytopenic purpura; immune thrombocytopenia; immunogenic thrombocytopenic purpura; increased torque production; individualized treatment plan; inosine triphosphate; inositol 1,4,5-triphosphate; islet-cell tumor of the pancreas; isotachophoresis
I_tp temporal peak intensity [pulse]
ITPA Illinois Test of Psycholinguistic Abilities; inosine triphosphatase
ITPASMT International Tissue Plasminogen Activator/Streptokinase Mortality Trial
ITPK inositol 1,4,5-triphosphate-3-kinase
ITPKA inositol 1,4,5-triphosphate-3-kinase A
ITPKB inositol 1,4,5-triphosphate-3-kinase B
ITPR inositol 1,4,5-triphosphate receptor
ITPV intratracheal pulmonary ventilation; Itaporanga virus
ITQ inferior temporal quadrant
ITQV Itaqui virus
ITR intraocular tension recorder; intratracheal; inverted terminal repeat; isotretinoin
ITRI Inhalation Toxicology Research Institute
ITS infective toxic shock; insulin-transferrin-selenium; intelligent [computer-assisted] tutoring system; International Twin Study; Israeli Thrombolytic Survey
ITSHD isolated thyroid-stimulating hormone deficiency
ITT insulin tolerance test; intent to treat; internal tibial torsion
IT&T information technology and telematics
ITU intensive therapy unit; International Telecommunication Union; international toxic unit
ITUV Itupiranga virus
ITV inferior temporal vein
IU immunizing unit; infection unit; integral uniformity; international unit [JCAHO unapproved abbreviation]; intrauterine; in utero; 5-iodouracil
iu infectious unit
IUA intrauterine adhesions
IUAT International Union Against Tuberculosis
IUB International Union of Biochemistry
IUBS International Union of Biological Sciences
IUC idiopathic ulcerative colitis; intrauterine catheter; inward unidirectional current
IUCD intrauterine contraceptive device
IUD intrauterine death; intrauterine device
IUDR, IUdR iodeoxyuridine
IUF isolated ultrafiltration
IUFB intrauterine foreign body
IUG infusion urogram; intrauterine gas; intrauterine growth
IUGR intrauterine growth rate; intrauterine growth retardation
IUI intrauterine insemination
IUIS International Union of Immunological Societies
IU/L international units per liter
IUM internal urethral meatus; intrauterine [fetus] malnourished; intrauterine membrane
IU/min international units per minute
IUP intrauterine pregnancy; intrauterine pressure
IUPAC International Union of Pure and Applied Chemistry
IUPAP International Union of Pure and Applied Physics
IUPAT intrauterine pregnancy at term
IUPD intrauterine pregnancy delivered
IUPESM International Union for Physical and Engineering Sciences in Medicine
IUPHAR International Union of Pharmacology
IUPS International Union of Physiological Sciences
IUPTB intrauterine pregnancy, term birth
IURES International Union of Reticuloendothelial Societies
IUT intrauterine transfusion
IUVDT International Union against Venereal Diseases and the Treponematoses
IV endometrial carcinoma extending outside the true pelvis or involving the bladder and rectum [International Federation of Gynecologists and Obstetricians (FIGO) classification]; ichnovirus; ichthyosis vulgaris; immunodeficiency virus; initial visit; interventricular; intervertebral; intravaginal; intravascular; intravenous; intraventricular; intravertebral; invasive; in vivo; in vitro; involvement of one or more extralymphatic organs [Ann Arbor staging system for Hodgkin disease]; iodine value; iridescent virus; iridovirus; isometric virus; symbol for class 4 controlled substances
iv intravascular; intravenous
IVA interpretative value analysis; intraoperative vascular angiography; isovaleric acid
IVa endometrial carcinoma spreading to adjacent organs [International Federation of Gynecologists and Obstetricians (FIGO) classification]; vaginal carcinoma with metastases to adjacent organs [International Federations of Gynecologists and Obstetricians (FIGO) classification]
IVACG International Vitamin A Consultative Group
IVAP in-vivo adhesive platelet
IVAS intracorporeal ventricular assist system
IVB intraventricular block
IVb endometrial carcinoma spreading to distant organs [International Federation of Gynecologists and Obstetricians (FIGO) classification]; vaginal carcinoma with metastases to distant organs [International Federation of Gynecologists and Obstetricians (FIGO) classification]
IVBAT intravascular bronchioalveolar tumor
IVBC intravascular blood coagulation
IVC inferior vena cava; inspiratory vital capacity; integrated vector control; intravascular coagulation; intravenous cholangiogram, intravenous cholangiography; intraventricular catheter
IVCC intravascular consumption coagulopathy
IVCD intraventricular conduction defect
IVCH intravenous cholangiography
IVC-LA inferior vena cava and left atrium
IVCP inferior vena cava pressure
IVCR inferior vena cava reconstruction
IVCT inferior vena cava thrombosis; intravenously enhanced computed tomography
IVCV inferior venacavography; Ivy vein clearing virus
IVD interactive videodisk; intervertebral disc; in vitro diagnostic device
IVDA/IVDU intravenous drug abuse/ abuser---intravenous drug use/user
IVDSA intravenous digital subtraction angiography
IVET in vivo expression technology
IVF interventricular foramen; intervertebral foramen; intravascular fluid; intravenous fluid; in vitro fertilization
IVFA intravenous fluorescein angiography
IVF-ET in vitro fertilization-embryo transfer
IVGG intravenous gammaglobulin
IVGTT intravenous glucose tolerance test
IVH intravenous hyperalimentation; intraventricular hemorrhage; in vitro hyperploidy
IVI intravenous infusion
IVIG, IVIg, ivIG intravenous immunoglobulin
IVISTAT Intravenous Immunoglobulin or Sulfamethaxazole/Trimethoprim as Additional Therapy for Systemic Vasculitis [study]
IVJC intervertebral joint complex
IVL intravascular lymphomatosis; involucrin
I-VLBW intubated very low birthweight
IVM intravascular mass; in vitro maturation
IVMG intravenous magnesium sulfate
IVMP intravenous methylprednisolone
IVN intravenous nutrition
IVNA in vivo neutron activation [analysis]
IVNAA in vivo neutron activation analysis
IVNR interventional neuroradiology
IVOTTS Irvine viable organ-tissue transport system
IVOX intravascular oxygenator
IVP intravenous push; intravenous pyelogram, intravenous pyelography; intraventricular pressure
IVPB intravenous piggyback
IVPF isovolume pressure flow curve
IVPSB International Veterinary Pathology Slide Bank
IVR idioventricular rhythm; interactive voice response; intravaginal ring; isolated volume responder
IVRA intravenous regional anesthesia
IVRT isovolumic relaxation time
IVS inappropriate vasopressin secretion; intervening sequence; interventricular septum; intervillous space
IVSA International Veterinary Students Association
IVSCT in vitro skin corrosivity test
IVSD interventricular septal defect; intraventricular septum in diastole
IVST intraventricular septal thickness
IVT index of vertical transmission; interventional video tomography; interventricular trigone; intrasound vibration test; intravenous transfusion; intraventricular; in vitro tetraploidy; isovolumetric time
IVTT in vitro transcription and translation
IVTTT intravenous tolbutamide tolerance test
IVU intravenous urography
IVUS intravascular ultrasound
IVUS/QCA Intravascular Ultrasound Quantitative Coronary Angiography [study]
IVV influenza virus vaccine; intravenous vasopressin
IVW image-viewing workstation
IW inner wall; inpatient ward; input word
IWB indeterminate Western blot [test]; index of well being
IWGMT International Working Group on Mycobacterial Taxonomy
IWHS Iowa Women's Health Study
IWI inferior wall infarction; interwave interval
IWL insensible water loss; inter-wave latency
IWMI inferior wall myocardial infarct
IWPS info-window presentation system
IWRP Individualized Written Rehabilitation Program
IWS Index of Work Satisfaction
IXDB X Chromosome Integrated Database
IZ infarction zone