Dictionary of Medical Acronyms & Abbreviations

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[ H ]

H₁ | H₂ | H₃ | H₄ | H₅ | H₆ | H₇ |

H bacterial antigen in serologic classification of bacteria [Ger. Hauch, breath]; deflection in the His bundle in electrogram [spike]; dose equivalent; draft [Lat. haustus]; electrically induced spinal reflex; enthalpy; fucosal transferase-producing gene; heart; heavy [strand]; height; hemagglutination; hemisphere; hemolysis; Hemophilus; henry; heparin; heroin; high; hippocampus; histidine; Histoplasma; histoplasmosis; Holzknecht unit; homosexual; horizontal; hormone; horse; hospital; Hounsfield unit; hour; human; hydrogen; hydrolysis; hygiene; hyoscine; hypermetropia; hyperopia; hypodermic; hypothalamus; magnetic field strength; magnetization; mustard gas; oersted; the region of a sarcomere containing only myosin filaments [band; Ger. heller, lighter]
H₀ null hypothesis
H1/2 half-value layer
H1 first [heart] sound; halistatin; protium
¹H, H¹ protium
H₁ alternate hypothesis [statistics]
H2 deuterium; second [heart] sound
²H, H² deuterium
H3, ³H, H³ tritium
4H hypothalamic hamartoblastoma-hyperphalangeal hypoendocrine-hypoplastic anus [syndrome]
H⁺ hydrogen ion
[H⁺] hydrogen ion concentration
h hand-rearing [of experimental animals]; heat transfer coefficient; hecto; height; henry; hour [Lat. hora]; human; hundred; hypodermic; negatively staining region of a chromosome; Planck constant; secondary constriction; specific enthalpy
h- hecto- [10²]
HA H antigen; Hakim-Adams [syndrome]; halothane anesthesia; Hartley [guinea pig]; headache; health affairs; health alliance; hearing aid; height age; hemadsorption; hemagglutinating antibody; hemagglutination; hemagglutinin; hemolytic anemia; hemophiliac with adenopathy; hepatic adenoma; hepatic artery; hepatitis A; hepatitis-associated; heteroduplex analysis; heterophil antibody; Heyden antibiotic; high anxiety; hippocampal asymmetry; hippuric acid; histamine; histocompatibility antigen; Horton arteritis; hospital administration; hospital admission; hospital apprentice; Hounsfield unit; human albumin; hyaluronic acid; hydroxyapatite; hydroxylamine; hyperalimentation; hyperandrogenism; hypersensitivity alveolitis; hypo-thalamic amenorrhea
H/A head to abdomen; headache
1HA hydroxyapatite; hydroxylamine
HA2 hemadsorption virus 2
Ha absolution hypermetropia; hafnium; hamster; Hartmann number
ha hectare
HAA hearing aid amplifier; hemolytic anemia antigen; hepatitis-associated antigen; hepatitis-associated aplastic anemia; hospital activity analysis
HA Ag hepatitis A antigen
HAART highly active antiretroviral therapy
HAAS Honolulu-Asia Aging Study
hAAT human α₁-antitrypsin
HAB harmful algal bloom; histoacryl blue
HABA 2(4´-hydroxyazobenzene) benzoic acid
HABF hepatic artery blood flow
HA-BP high affinity binding protein
HACCP hazard analysis and critical control point system [food safety]
HACE high-altitude cerebral edema
HACEK Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, Kingella
HACER hypothalamic area controlling emotional response
HAChT high affinity choline transport
HACR hereditary adenomatosis of the colon and rectum
HACS Hazard-Assessment Computer System; hyperactive child syndrome
hACSP human adenylate cyclase-stimulating protein
HACT health care activity [UMLS]
HAD health care alternatives development; hemadsorption; HIV-associated dementia; hospital administration, hospital administrator; hospital anxiety and depression [scale]; human immunodeficiency virus-associated dementia
HAd hemadsorption; hospital administrator
HADD hydroxyapatite deposition disease
HADH hydroxyacyl CoA dehydrogenase
HAd-I hemadsorption-inhibition
HADS hospital anxiety and depression scale
HAdV 1-51 human adenoviruses 1 to 51
HAdV-A, B, C, D, E, F human adenoviruses A, B, C, D, E, and F
HAE health appraisal examination; hearing aid evaluation; hepatic artery embolism; hereditary angioneurotic edema
Hae Haemophilus influenzae aegyptius
HAEC Hirschsprung-associated enterocolitis; human aortic endothelial cell
HAF hepatocellular altered focus; hyperalimentation fluid
HaF Hageman factor
HAFP human alpha-fetoprotein
HAG heat-aggregated globulin
HAGG hyperimmune antivariola gammaglobulin
HAGH hydroxyacyl-glutathione hydrolase
HAGL humeral avulsion of glenohumeral ligament
HAH halogenated aromatic compound
HAHS Harvard Alumni Health Study
HAHTG horse antihuman thymus globulin
HAI hemagglutination inhibition; hepatic arterial infusion; hospital-acquired infection
H&A Ins health and accident insurance
HAIR-AN hyperandrogenism, insulin resistance, and acanthosis nigricans [syndrome]
HaK hamster kidney
HAL hand-assisted laparoscopy; Heart Attacks in London [study]; hepatic artery ligation; hybrid artificial liver; hypoplastic acute leukemia
hal halogen; halothane
HALC high affinity-low capacity
HALF high amplitude low frequency; Homocysteine, Atherosclerosis, Lipid and Familial Hypercholesterolemia [study]
HALFD hypertonic albumin-containing fluid demand
halluc hallucinations
HALO Halotestin
HALP hyperalphalipoproteinemia
HALT Hypertension and Lipid Trial
HALT MI Hu23F2G Anti-Adhesion to Limit Cytotoxic Injury Following Acute Myocardial Infarction [study]
HALV human acquired immunodeficiency syndrome lymphotropic virus
HaLV hamster leukemia virus
HAM hearing aid microphone; helical axis in motion; hemolymph anticoagulation medium; human albumin microsphere; human alveolar macrophage; human T-cell lymphotropic virus associated myelopathy; hypoparathyroidism, Addison disease, and mucocutaneous candidiasis [syndrome]
HAM-1, 2 histocompatibility antigen modifier types 1 and 2
HAm human amnion
HAMA Hamilton anxiety [scale]; human anti-murine antibody
HA-MA methacrylated hyaluronic acid
HAMD Hamilton depression [scale]
HAMDCT Hospital Authority Master Disease Code Table [Hong Kong]
HAMIT Heparin in Acute Myocardial Infarction Trial
HaMSV, Ha-MSV Harvey murine sarcoma virus
HAN heroin-associated nephropathy; hyperplastic alveolar nodule
HANA hemagglutinin neuraminidase
H and E hematoxylin and eosin [stain]
HANDI Hemophilia and AIDS/HIV Network for the Dissemination of Information
Handicp handicapped
HANE hereditary angioneurotic edema; Hydrochlorothiazide, Atenolol, Nitrendipine, Enalapril [study]
HANES Health and Nutrition Examination Survey
hANF human atrial natriuretic factor
h ANP human atrial natriuretic peptide
HANSA Healthcare Advanced Networked System Architecture
HAODM hypoplasia anguli oris depressor muscle
HAP Handicapped Aid Program; Hazardous Air Pollutants [List]; hazardous air pollution; health alliance plan; hepatic arterial phase; heredopathia atactica polyneuritiformis; high-altitude peristalsis; histamine acid phosphate; hospital-acquired pneumonia; hospital admissions program; humoral antibody production; hydrolyzed animal protein; hydroxyapatite
HAp hydroxyapatite
HAPA hemagglutinating anti-penicillin antibody
HAPC high-amplitude peristaltic contraction; hospital-acquired penetration contact
HAPE high-altitude pulmonary edema
HAPI Heparin as an Alternative to Promote Patency in Acute Myocardial Infarction [study]
HAPORT Heart Attack Patient Outcome Research Team [study]
HAPPHY Heart Attack Primary Prevention in Hypertension
HAPS hepatic arterial perfusion scintigraphy
HAPSA Home Assessment Program for Successful Aging
HaPV hamster polyomavirus
HAPVC hemi-anomalous pulmonary venous connection
HAPVD hemi-anomalous pulmonary venous drainage
HAPVR hemi-anomalous pulmonary venous return
HaPyV hamster polyomavirus
HAQ health assessment questionnaire
HAR head airway region; high-altitude retinopathy
HARD hydrocephalus-agyria-retinal dysplasia [syndrome]
HARD +/- E hydrocephalus-agyria-retinal dysplasia plus or minus encephalocele [syndrome]
HAREM heparin assay rapid easy method
HARH high-altitude retinal hemorrhage
HARM harmonics from the injected signal; heparin assay rapid method
HAROLD Hypertension and Ambulatory Recording in the Old
HARP Harvard Atherosclerosis Reversibility Project; homeless and at-risk population; hospital admission risk profile
HARS histidyl-ribonucleic acid [RNA] synthetase; human AIDS [acquired immunodeficiency syndrome] reporting system
HART Heparin-Aspirin Reperfusion Trial; hyperfractionated accelerated radiation therapy; Hypertension Audit of Risk Factor Therapy [study]
HART II Heparin and Reperfusion Therapies [study]
HARTS Hoechst Adverse Reaction Terminology System
HAS Hamilton Anxiety Scale; health advisory service; health-assessment system; Helsinki Ageing Study; Hemostatic System Activation Substudy; highest asymptomatic [dose]; Hirulog Angioplasty Study; hospital administrative service; hospital advisory service; human albumin solution; hydrocephalus due to stenosis of the aqueduct of Sylvius; hyperalimentation solution; hypertensive arteriosclerotic
HASCVD hypertensive arteriosclerotic cardiovascular disease
HASHD hypertensive arteriosclerotic heart disease
HASI Hirulog Angioplasty Study Investigators
HASM human airway smooth muscle
HASMC human aortic smooth muscle cell
HASP Hospital Admissions and Surveillance Program
HASS highest anxiety subscale score
HASTE half-Fourier acquisition single shot turbospin echo
HAstV 1-8 human astroviruses 1 to 8
HAT Halsted Aphasia Test; head, arm, trunk; heparin-associated thrombocytopenia; heterophil antibody titer; histone acetyltransferase; home asthma telemonitoring; hospital arrival time; human African trypanosomiasis; hypoxanthine, aminopterin, and thymidine; hypoxanthine, azaserine, and thymidine
3-HAT 3-hydroxyanthranilic acid
HATG horse antihuman thymocyte globulin
HATH Heterosexual Attitudes Toward Homosexuality [scale]
HATT heparin-associated thrombocytopenia and thrombosis
HATTS hemagglutination treponemal test for syphilis
HaTx hanatoxin
HAU hemagglutinating unit
HAV hemadsorption virus; hepatitis A virus
HAVOC Hematoma and Vascular Outcome Complications [study]
HAVS hand-arm vibration syndrome
HAWIC Hamburg-Wechsler Intelligence Test for Children
HAZ height-for-age Z-score
HAZMAT hazardous material
HAZOP hazard and operability
HAZR hazardous substance [UMLS]
HAZUS Hazard US [loss estimation methodology]
HAZWOPER hazardous waste operations and emergency response
HB health board; heart block; heel to buttock; held back; hemoglobin; hepatitis B; His bundle; hold breakfast; housebound; hybridoma bank; hyoid body
Hb hemoglobin
HBA bundle of His electrogram; heated blood agar [test]
HbA hemoglobin A, adult hemoglobin
HBA₁ glycosylated hemoglobin
HBAb hepatitis B antibody
HBABA hydroxybenzeneazobenzoic acid
HbA1c, HbA_1c glycosylated hemoglobin
HBAg hepatitis B antigen
HB_sAG hepatitis B surface virus
HBB hemoglobin beta-chain; hospital blood bank; hydroxybenzyl benzimidazole
HbBC hemoglobin binding capacity
HBBW hold breakfast blood work
HBC hereditary breast cancer
HBC, HBc, HB_c hepatitis B core [antigen]
HbC hemoglobin C
HBCAB, HBcAb hepatitis B core antibody
HBCAG, HBcAg, HB_cAg hepatitis B core antigen
HBCG heat-aggregated Calmette-Guerin bacillus
HbCO carboxyhemoglobin
Hb CS hemoglobin Constant Spring
HBCT helical biphasic contrast-enhanced computed tomography
HbCV Haemophilus influenzae conjugate vaccine
HBD has been drinking; homozygous-by-descent; hydroxybutyric dehydrogenase; hypophosphatemic bone disease
HbD hemoglobin D
HBDH hydroxybutyrate dehydrogenase
hBDNF human brain derived neurotrophic factor
HBDT human basophil degranulation test
HBE His bundle electrogram
HbE hemoglobin E
HB_e hepatitis B early antigen
HBeAb/Ag hepatitis B e antibody/antigen
HBEAG, HB_eAg, HBeAg hepatitis B early antigen
HBEC human brain endothelial cell
HB-EGF heparin-binding epidermal growth factor
HBF hand blood flow; hemispheric blood flow; hemoglobinuric bilious fever; hepatic blood flow; hypothalamic blood flow
HbF fetal hemoglobin, hemoglobin F
Hbg hemoglobin
HBGF heparin-binding growth factor
HBGM home blood glucose monitoring
HBGR hemoglobin-gamma regulator
HbH hemoglobin H
HBHC hospital-based home care
HBHCT hospital-based home care team
Hb-Hp hemoglobin-haptoglobin [complex]
HBI hemibody irradiation; high serum-bound iron
HBIG, HBIg hepatitis B immunoglobulin
HBL hepatoblastoma