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Medical Abbreviations – I

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I impression
IA intra arterial
immune adherence
infantile autism
intermittent auscultation
I & A irrigation and aspiration
IAA ileoanal anastomosis
insulin autoantibodies
interrupted aortic arch
IAAA inflammatory abdominal aortic aneurysms
IAAT intrabdominal adipose tissue
IAB incomplete abortion
induced abortion
IAC internal auditory canal
IAD intra-aortic counterpulsation
implantable atrial defibrillator
IAF intra-abdominal fat
IAG International Association of Gerontologists
IAHA immune adherence hemagglutination
IAI intra-abdominal infection
intra-abdominal injury
IALD instrumental activities of daily living
IAM internal auditory meatus
IAN inferior alveolar nerve
IAO immediately after onset
intermittent aortic occlusion
IAP intra-abdominal pressure
IAQ indoor air quality
IAS idiopathic ankylosing spondylitis
IAT immunoaugmentive therapy
indirect antiglobulin test
IAV intrinsic atrioventricular conduction
IB ileal bypass
insulin-receptor binding test
isolation bed
IBIA Interntional Brain Injury Association
interferon beta-Ia
IBAM idiopathic bile acid malabsorption
IBBB intra-blood-brain barrier
IBC invasive bladder cancer
iron binding capacity
IBD Inflammatory Bowel Disease
infectious bursal disease
IBE individual bioequivalence
intrahepatic biliary epithelial
IBG iliac bone graft
IBI intermittent bladder irrigation
IBILI indirect bilirubin
IBM inclusion body myositis
ideal body mass (index of body mass)
IBNR incurred but not reported
IBP ibuprofen
IBR immediate breast reconstruction
IBS irritable bowel syndrome
IBT ink blot test
immune-based therapy
IBU ibuprofen
inflammatory back pain
invasive blood pressure
iron binding protein
IBW ideal body weight
IC inspiratory capacity
immune complex
inorganic carbon
iliac crest
intensive care
intermediate care
interstitial changes
irritable colon
between meals
ICA internal carotid artery
intermediate care area
ileocolic anastomosis
intracranial abscess
ICa calcium, ionized
ICAD internal carotid artery dissection
intracranial atherosclerotic disease
ICAM intracellular adhesion molecule
ICAO internal carotid artery occlusion
ICAS intermediate coronary artery syndrome
ICAT isotope-coded affinity tagging
infant cardiac arrest tray
ICB intracranial bleeding
ICC intensive coronary care
invasive cervical cancer
idiopathic chronic cough
ICD implantable cardioverter defibrillator
informed consent document
instantaneous cardiac death
irritant contact dermatitis
ICE ice, compression, and elevation
+ice add ice
ICF intermediate care facility
intracellular fluid
ICG Initiative for Chemical Genetics
idiopathic collapsing glomerulopathy
impedance cardiogram
impedance cardiography
ICH immunocompromised host
intracerebral hemorrhage
intracranial hemorrhage
ICI intracranial injury
ICL intracorneal lens
ICM intercostal margin
intercostal muscle
ischemic cardiomyopathy
ICN infection control nurse
intensive care nursery
ICP inductively coupled plasma
intercostal position
intracranial pressure
ICR Individual Case Review
Institute for Cancer Research
iliac crests
intercaudate nucleus ratio
ICS ileocecal sphincter
ICT icterus
intensive conventional therapy
intracranial tumor
ICU intensive care unit
intermediate care unit
ICV internal cerebral vein
ileocecal valve
ileocolic vein
ICW in connection with
intact canal wall
intercellular water
ID identification
induction delivery
initial diagnosis
initial dose
iron deficiency
I & D incision and debridement
incision and drainage
IDA iron deficiency anemia
idamycin; idarubicin
IDAM infant of drug abusing mother
IDB inferior dental block
incomplete database
IDC idiopathic dilated cardiomyopathy
IDD insulin-dependent diabetes
intervertebral disk disease
I/DD intellectual and developmental disabilities
IDDM insulin-dependent diabetes mellitus
IDE Investigational Device Exemption
insulin-degrading enzyme
inner dental epithelial
IDH Infectious Diseases Hospital
intervertebral disc herniation
intradialytic hypotension
isocitrate dehydrogenase
IDI Interpersonal Dependency Inventory
intrathecal drug infusion
IDK internal derangement of knee
IDL intermediate-density lipoprotein
IDM infant of a diabetic mother
IDNA iron-deficient, not anemic
IDO idiopathic detrusor overactivity
IDP initiate discharge planning
IDR Idarubicin
immunodeficiency Resource
indermal reaction
idiosyncratic drug reaction
IDS infectious disease service
IDT intensive diabetes treatment
IDU idoxuridine
injection drug user
intravenous drug user
illicit drug use
IDV Indinavir
initial distribution volume
IE immunoelectrophoresis
induced emesis
infectious enteritis
inner ear
I & E ingress and egress
internal and external
IEC independent ethics committee
inpatient exercise center
IED immune-enchancing diet
IEED involuntary emotional expression disorder
IEF International Eye Foundation
incontinence episode frequency
isoelectric focusing
IEH involuntary emergency hospitalization
IEI idiopathic environmental intolerance
IEL internal elastic lamina
IEM immune electron microscopy
IEN intraepithelial neoplasia
IEP idiopathic eosinophilic pneumonia
I:E ratio inspiratory to expiratory time ratio
IES Impact of Events Scale
infected erythrocytes
inferior esophageal sphincter
inspiratory effort sensation
IF I factor
impact factor
internal fixation
interstitial fluid
idiopathic flushing
intrinsic factor
IFA immunofluorescent assay
iron and folic acid
IFAT immunofluorescence antibody test
IFC inferior frontal cortex
interferential current
intracellular free calcium
IFE immunofixation electrophoresis
IFG impaired fasting glucose
IFI invasive fungal infection
IFL indolent follicular lymphoma
IFN interferon
IFO ifosfamide
in front of
IFOP infrared fiber-optic probe
IFOS ifosfamide
IFP inflammatory fibroid polyps
IFRT involved-field radiotherapy
IFSAC Inventory of Functional Status After Childbirth
IFSE internal fetal scalp electrode
IFSP individualized family service plan
IgA immunoglobulin A
infantile genetic agranulocytosis
IGCS inpatient geriatric consultation services
IgD immunoglobulin D
IGDE idiopathic gait disorders of the elderly
IGDM infant of gestational diabetic mother
IGE idiopathic generalized epilepsy
impaired gas exchange
infantile gastroenteritis
IgE immunoglobulin E
IGFA indocyanine-green fundus angiography
IgG immunoglobulin G
IGHL inferior glenohumeral ligament
IGI image guided implantology
IgM immunoglobulin M
IGP interstitial glycoprotein
IGR intrauterine growth retardation
IGT impaired glucose tolerance
IH inguinal hernia
infectious hepatitis
indirect hemagglutination
idiopathic hypercalciuria
idiopathic hypersomnia
immediate hypersensitivity
in hospital
IHA immune hemolytic anemia
intrahepatic arterial
IHC idiopathic hypercalciuria
immobilization hypercalcemia
IHD ischemic heart disease
intrahepatic duct
intermittent hemodialysis
IHES idiopathic hypereosinophilic syndrome
IHGK immortalized human gingival keratinocytes
IHH idiopathic hypogonadotrophic hypogonadism
intermittent hypercapnic hypoxia
IHI Institute for Healthcare Improvement
IHO idiopathic hypertrophic osteoarthropathy
IHP idiopathic hypoparathyroidism
inverted hand position
isolated hepatic perfusion
idiopathic hypertrophic pachymeningitis
IHR inguinal hernia repair
intrinsic heart rate
IHS integrated healthcare system
Idiopathic Headache Score
IHT insulin hypoglycemia test
IHU inpatient hospice unit
IHW inner-heel wedge
II Image Intensification
insulin index
internal iliac
ILA internal iliac artery
ILCP increased intracranial pressure
IICU infant intensive care unit
IID Insulin dependent diabetes
infectious intestinal disease
IJ ileojejunal
internal jugular
I & J insight and judgment
IJC internal jugular catheter
IJD inflammatory joint disease
IJO idiopathic juvenile osteoporosis
IJP internal jugular pressure
IJR idiojunctional rhythm
IJT idiojunctional tachycardia
IJV internal jugular vein
IK immobilized knee
interstitial keratitis
IL immature lungs
ILA insulin-like activity
indirect latex agglutination
inferior lateral angle
ILB incidental Lewy body
ILC interstitial laser coagulation
invasive lobular cancer
ILD immature lung disease
interstitial lung disease
ILE intravenous lipid emulsion
infantile lobar emphysema
ILF indicated low forceps
ILI influenza-like illness
ILM internal limiting membrane
intubating laryngeal mask
ILP independent living program
isolated limb perfusion
ILR implantable loop recorder
ILS intermittent light stimulation
idiopathic leucine sensitivity
idiopathic lymphadenopathy syndrome
increased life span
ILT interstitial laser therapy
ILVEN inflammatory linear verrucal epidermal nevus
IM ice massage
infectious mononucleosis
internal medicine
IMA inferior mesenteric artery
IMB intermenstrual bleeding
IMC intermittent catheterization
intramedullary catheter
IMDs inherited metabolic disorders
IME important medical event
independent medical examination
IMF idiopathic myelofibrosis
IMG internal medicine group
IMH idiopathic myocardial hypertrophy
IMI imipramine
inferior myocardial infarction
impending myocardial infarction
intramuscular injection
IMIG intramuscular immunoglobulin
IMLC incomplete mitral leaflet closure
IMM inner mitochondrial membrane
IMN idiopathic membranous nephropathy
IMP Impression
idiopathic myeloid proliferation
IMR infant mortality rate
IMS immunosuppressants
inflammatory myopathies
involuntary movements
IMT inspiratory muscle training
intimal medial thickness
IMU intermediate medicine unit
IMV inferior mesenteric vein
IN index
interstitial nephritis
INAD infantile neuroaxonal dystrophy
in no apparent distress
INB intercostal nerve blockade
INC incisal
IND Investigational New Drug
incision and drainage
INE infantile necrotizing encephalomyelopathy
INF infant
ING inhibitor of growth
INH inhalation
inj injection
INK injury not known
INO inhaled nitrous oxide
inpt inpatient
INQ Index of Nutritional Quality
inquiry mode questionnaire
inferior nasal quadrant
INR international normalized ratio
INS Infusion Nurses Society
idiopathic nephrotic syndrome
in situ in the natural or normal place
INT intermittent
intermittent needle therapy
INTERP interpretation
INV Inini virus
inferior nasal vein
IO inferior oblique
initial opening
intestinal obstruction
intraocular pressure
I & O intake and output
IOA indicators of abuse
intact on admission
inner optic anlage
institute on Aging
IOC intern on call
IOD implant-supported overdenture
integrated optical density
interorbital distance
IOF intraocular fluid
IOH idiopathic orthostatic hypotension
IOI idiopathic orbital inflammation
IOL induction of labor
intraocular lens
intraocular lymphoma
IOM Institute of Medicine
intraoperative monitoring
ION ischemic optic neuropathy
IOOA inferior oblique overaction
IOP intensive outpatient program
intraocular pressure
intraosseous puncture
IOR immature oocyte retrieval
IOS infant observation scale
inspiratory off-switching
intraoperative sonography
IOT intraocular tension
IOUS intraocular ultrasound
IOV inside-out vesicle
initial office visit
IP interphalangeal
imaging plate
induction period
ice pack
invasive procedure
individualized plan
incubation period
I/P iris/pupil
IPA Invasive pulmonary aspergillosis
independent practice association
idiopathic pulmonary arteriosclerosis
IPB initial pulmonary burden
injury-prone behavior
interpleural block
infrapopliteal bypass
IPC Intermittent pneumatic compression
IFN-alpha producing cells
impression cytology
inferior parietal cortex
indirect pulp cavity
IPD idiopathic Parkinson disease
inflammatory pelvic disease
intermittent peritoneal dialysis
IPF idiopathic pulmonary fibrosis
inpatient psychiatric facility
IPG immobilized pH gradient
IPH idiopathic pulmonary hemosiderosis
IPI International Prognostic Index
IPJ interphalangeal joint
IPK intractable plantar keratosis
IPL intense pulsed light
inferior parietal lobe
IPM intranodal-palisaded myofibroblastoma
IPN infantile periarteritis nodosa
interstitial pneumonia
IPOF immediate postoperative fitting
IPOP immediate postoperative prosthesis
IPP inflatable penile prosthesis
intrapleual pressure
IPPA inspection, palpation, percussion, and
IPPB intermittent positive-pressure breathing
IPPE initial preventive physical examination
IPPF immediate postoperative prosthetic fitting
IPPI interruption of pregnancy for psychiatric
Immediate postplacental insertion
Intensified Pulse Polio Immunization
IPPV intermittent positive pressure ventilation
IPS idiopathic pneumonia syndrome
IPT Isoniazid preventive therapy
immediate patch test
immunoperoxidase technique
intended primary treatment
IPV Infectious pustular vulvovaginitis
inactivated poliovirus vaccine
IPW interphalangeal width
IQ intelligence quotient
IQR interquartile range
IR immediate-release
inferior rectus
insulin resistance
internal reduction
I & R insertion and removal
IRA infarct-related artery
IRB Institutional Review Board
IRC Indirect radionuclide cystography
inactive renin concentration
IRD immune renal disease
IRE internal rotation in extension
IRF impaired renal function
inpatient rehabilitation facilities
internal rotation in flexion
IRH idiopathic reactive hypoglycemia
Institute for Reproductive Health
intraretinal hemorrhage
IRI immunoreactive insulin
IRM insect resistance management
idiopathic recurrent miscarriage
immediate-release morphine
immunoreactive material
IRN iterated rippled noise
IRNS intercostal repetitive nerve stimulation
IROS intracellular reactive oxygen species
ipsilateral routing of signals
IRP intellectual property rights
IRR infrared radiation
incidence rate ratio
intrarenal reflux
irreg irregular
IRS insulin receptor substrate
insulin-resistance syndrome
IRT immunoreactive trypsin
IRV inspiratory reserve volume
inverse ratio ventilation
IS intercostal space
international standards
ileal segment
immune serum
in situ
incentive spirometer
induced sputum
I & S intact and symmetrical
ISA intrinsic sympathomimetic activity
immunosuppressive activity
impaired self-awareness
ileosigmoid anastomosis
ISADH inappropriate secretion of antidiuretic hormone
ISAM infant of substance abusing mother
ISB incentive spirometry breathing
ISC carcinoma in situ
infant servo-control
infant skin control
intermittent self-catheterization
ISD inhibited sexual desire
initial sleep disturbance
ISE internal scalp electrode

inhibited sexual excitement
ISF interstitial fluid
ISG immune serum globulin
ISH isolated systolic hypertension
ISI Insulin Sensitivity Index
ISK ileosigmoid knot
  irritated seborrheic keratosis
ISMA infantile spinal muscular atrophy
ISNA iron-sufficient, not anemic
ISO Inside-out
International Organization for Standardization
ISP isoproterenol
ice structuring protein
idiopathic spontaneous pneumothorax
inferior spermatic plexus
ISQ implant stability quotient
ISR injection site reaction
ISS idiopathic short stature
Injury Severity Score
irritable stomach syndrome
IST immunosuppressive therapy
inappropriate sinus tachycardia
insulin shock therapy
ISU intermediate surgical unit
ISW interstitial water
IT Intrathecal
individual therapy
inhalation therapy
intensive therapy
interdisciplinary Team
intradermal test
idiopathic thrombocythemia
immature teratoma
immobility time
immune Tolerance
ITA individual treatment assessment
ITB iliotibial band
ITC Incontinence Treatment Center
isothermal titration calorimetry
inferior temporal cortex
ITD impedance threshold device
ITE insufficient therapeutic effect
ITF inpatient treatment facility
IITN idiopathic trigeminal neuralgia
Immune Tolerance Network
insecticide-treated bed net
ITOC intratracheal oxygen catheter
ITP idiopathic thrombocytopenic purpura
ITQ inferior temporal quadrant
ITR intertrigeminal region
intraocular tension recorder
inverted terminal repetition
isolated testicular relapse
ITS intelligent testing strategies
ITT identical twins together
insulin tolerance test
ITU infant-toddler unit
intensive therapy unit
intensive treatment unit
ITVAD indwelling transcutaneous vascular access device
ITZ itraconazole
IUBT intrauterine blood transfusion
IUC idiopathic ulcerative colitis
intrauterine catheter
IUD intrauterine death
intrauterine device
IUFB intrauterine foreign body
IUGR intrauterine growth retardation
IUI intrauterine insemination
IULN institutional upper limit of normal
IUP intrauterine pregnancy
IUR intrauterine retardation
IUS Intermediate Units
intraoperative ultrasonography
intrauterine drug delivery system
intrauterine system
IUT intersection-union test
intrauterine transfusion
IUTD immunizations up to date
IV intravenous
in vitro
influenza virus
Interstitial volume
intravenous bolus
intravenous catheter
IVA initial visual acuity
interpretative value analysis
intervertebral angle
IVBAT intravascular bronchoalveolar tumor
IVC inferior vena cava
intravenous chemotherapy
intravenous catheter
IVD instrumental vaginal delivery
intevertebral disk
intravenous drip
or drug
IVET in vivo expression technology
IVF intervertebral foramina
intravenous fluid
in vitro fertilization
IVGG intravenous gamma globulin
IVH intravenous hyperalimentation
intraventricular hemorrhage
IVIG intravenous immunoglobulin
IVJC intervertebral joint complex
IVL intravascular large B-cell lymphoma
intravascular lymphoma
intravascular lymphomatosis
intravenous lock
IVMP intravenous methylprednisolone
IVNC isolated ventricular noncompaction
IVO intraoral vertical osteotomy
IVP intravenous push
IVPB intravenous piggyback
IVR idioventricular rhythm
iliac vascular resistance
interventional radiology
interventional vascular radiology
intrarenal vascular resistance
intravaginal ring
IVRA intravenous regional anesthesia
IVRO intraoral vertical ramus osteotomy
IVS inappropriate vasopressin secretion
intact ventricular septum
intraventricular septum
irritable voiding syndrome
IVT idiopathic ventricular tachycardia
idioventricular tachycardia
intravenous transfusion
IVU intravenous urogram
intravenous drug user
IW inspiratory wheeze
IWL insensible water loss
involuntary weight loss
Medical Abbreviations – I