| Abbreviation
|
Meaning
|
| 131I or I131 |
iodine-131 (aka radioactive iodine or radioiodine)
|
| IA |
intra-arterial
intra-articular
|
| IAA |
insulin autoantibody
|
| IABP |
intra-aortic balloon pump
|
| IAI |
intra-amniotic infection
|
| IBC |
inflammatory breast cancer
|
| IBD |
inflammatory bowel disease
|
| IBS |
irritable bowel syndrome
|
| IC |
ileocecal
immunocompromised
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 unit
|
| ID |
infectious dose
infectious disease
identifying data
intellectual disability
|
| I&D |
incision and drainage (how to treat an abscess)
|
| IDA |
iron deficiency anemia
|
| IDC |
idiopathic dilated cardiomyopathy
indwelling catheter
infiltrating 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 |
inhaled
Isoniazid
|
| Inj |
injection
|
| INR |
international normalized ratio
|
| Int |
internal
|
| INT |
intermittent needle therapy
|
| IO |
intraosseous infusion
|
| I&O |
inputs and outputs
intake and outputs
|
| 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 resistance
Interventional 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—sometimes confused with intrauterine contraceptive device—use FDIU or IUFD instead.
intrauterine device—sometimes confused with intrauterine death—use IUCD instead (intrauterine contraceptive 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 hemorrhage
|
| IVIG |
intravenous immunoglobulin
|
| IVP |
intravenous pyelogram
|
| IVPB |
intravenous piggyback (i.v. short-term infusion)
|
| IVPG |
Intravenous pyogenic granuloma
|
| IVSS
|
Intravenous Soluset[1]
|
| IVU |
intravenous urogram
|
| IVUS |
intravascular ultrasound
|
| Ix |
Investigation(s)
|