List of medical abbreviations: H

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AbbreviationMeaning
hhr / hours
H histamine or its receptors (if with subscripts)
hemagglutinin
Hx history
HA ;

H/A

hypertonia arterialis
headache
calcium hydroxyapatite
HAA hepatitis-associated antigen or #History As Above
HAARThighly active antiretroviral therapy
HACA human anti-chimeric antibody
HACE High-altitude cerebral edema
HACEK acronym for a group of bacteria that are a frequent cause of endocarditis in children
HAD HIV-associated dementia
HADS Hospital Anxiety and Depression Scale
HAE hereditary angioedema
H/A headache
HAI healthcare-associated infection or hospital-acquired infection
HALEhealth-adjusted life expectancy
HAPE high-altitude pulmonary edema
HAV hepatitis A virus
Hb hemoglobin
HB heart block
Hb% hemoglobin concentration in gram per deciliter
HbA hemoglobin A (commonest type of hemoglobin)
HbA1c glycated hemoglobin (used as a measure of diabetes control)
HBDhas been drinking
HbF fetal hemoglobin
HBO hyperbaric oxygen
HBPhigh blood pressure, that is, hypertension
HbsAg Hepatitis B surface antigen
HBV hepatitis B virus
HChead circumference
hemorrhagic colitis
homocysteine
HCAHealthcare Associated, as in HCA-CDI
HCAP health care-associated (or acquired) pneumonia
HCC hepatocellular carcinoma
HCFHealthcare Facility
HCFAHealthcare Facility Associated, as in HCFA-CDI
hCG human chorionic gonadotropin
HCL hairy cell leukemia
HCM hypertrophic cardiomyopathy
healthcare maintenance
HCO3 bicarbonate
Hct hematocrit
HCT hematocrit
hematopoietic cell transplantation
HCRPHospital Cornea Retrieval Programme
HCTZ hydrochlorothiazide
HCV hepatitis C virus
HD Hodgkin disease
Hemodialysis
Huntington's disease
HDL high-density lipoprotein
HDL-C high-density lipoprotein-cholesterol
HDN hemolytic disease of the newborn
HDShemodynamically stable (i.e., not bleeding)
HDU high dependency unit
HDV hepatitis D virus
HDW Hemoglobin Distribution Width
H&E hematoxylin and eosin, a standard tissue stain
HE hepatic encephalopathy
HEC High emetogenic chemotherapy
HEENT head, eyes, ears, nose, throat
HELP
HELLP
HELLP syndrome (Hemolysis, elevated liver enzymes, low platelets in pregnancy)
HEMA hydroxy ethyl methacrylate, a material in soft contact lenses
Hemahematest – e.g. hema (-) – fecal occult blood
HES hydroxyethyl starch
HETE hydroxyeicosatetraenoic acid
HEV hepatitis E virus
HF heart failure
HFpEF heart failure with preserved ejection fraction
HFrEFheart failure with reduced ejection fraction
HFM hand, foot and mouth disease
HFMD hand, foot and mouth disease
HFNChigh flow Nasal cannula
HFRShemorrhagic fever with renal syndrome
HGB hemoglobin
HGH Human Growth Hormone
HGSIL high-grade squamous intraepithelial lesion
HGV hepatitis G virus
HGPRTase hypoxanthine-guanine phosphoribosyl transferase
HH hemihypertrophy
hiatus hernia
hitting head
H/H or H&H hemoglobin and hematocrit
HHS Hyperosmolar hyperglycemic state
HHThereditary hemorrhagic telangiectisia
HHVhuman herpesvirus
(including numerous subtypes such as HHV8)
HIhomicidal ideation
Hib haemophilus influenzae B
HIDA hepatobiliary iminodiacetic acid
HIDShyper-IgD (and periodic fever) syndrome
HIEhypoxic ischemic encephalopathy (cerebral hypoxia)
HIT heparin-induced thrombocytopenia
HIV human immunodeficiency virus
HL hepatic lipase
Hodgkin's lymphoma
hearing level
HLA human leukocyte antigen
HLD Hyperlipidemia
HLHS hypoplastic left heart syndrome
H&M hematemesis and melena
HMD hyaline membrane disease
HMGhuman menopausal gonadotropin
HMG-CoA 3-hydroxy-3-methyl-glutaryl-CoA
HMGR 3-hydroxy-3-methyl-glutaryl-CoA reductase
H-molehydatidiform mole
HMShyperreactive malarial splenomegaly
HMSNhereditary motor sensory neuropathy
HNhemagglutinin-neuraminidase
HND hemolytic disease of the newborn
HNPspinal disk herniation or herniated disk, that is, herniated nucleus pulposus
HNPCC hereditary nonpolyposis colorectal cancer
HNPP hereditary neuropathy with liability to pressure palsy
H/O history of ...
HOBhead of bed (usually followed by number of degrees of elevation, e.g., HOB 10°)
HOCM hypertrophic obstructive cardiomyopathy
HONK hyperosmolar nonketotic state
HOPI History of present illness
H&P history and physical examination (which very often are considered as a pair)
HPA hypothalamic-pituitary-adrenal axis
HPETE hydroxyeicosatetraenoic acid
HPFhigh-power field (microscopy)
HPI
H/oPI
history of the present illness
HPOAhypertrophic pulmonary osteoarthropathy (clubbing)
hPL human placental lactogen (same as human chorionic somatomammotropin)
HPP hypokalemic periodic paralysis
HPShantavirus pulmonary syndrome
HPV human papillomavirus
HR heart rate
hr hour or hours
HRS Hepatorenal syndrome
HRASHarvey rat sarcoma viral oncogene homolog
HRCT High-resolution computed tomography
HRT hormone replacement therapy
h.s.at bedtime (from Latin hora somni)
hshours of sleep
H→Sheel-to-shin test
HSChuman chorionic somatomammotropin (same as human placental lactogen)
HSCT Hematopoietic stem cell transplantation
HSG hysterosalpingogram
HSIL high-grade squamous intraepithelial lesion
HSM hepatosplenomegaly
HSP Henoch–Schönlein purpura
HSV herpes simplex virus
HT hypertension
Ht height
HTLV human T-lymphotropic virus
HTN hypertension
HTPA hypothalamic-pituitary-adrenal axis
HTVDhypertensive vascular disease
HUS hemolytic uremic syndrome
HVA homovanillic acid
HVLThigh-velocity lead therapy (facetious term for gunshot wound)
Hx history (of)