+ Sortable table Abbreviation Meaning h hr / 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 HAART highly 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 HALE health-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) HBD has been drinking HbF fetal hemoglobin HBO hyperbaric oxygen HBP high blood pressure, that is, hypertension HbsAg Hepatitis B surface antigen HBV hepatitis B virus HC head circumference hemorrhagic colitis homocysteine HCA Healthcare Associated, as in HCA-CDI HCAP health care-associated (or acquired) pneumonia HCC hepatocellular carcinoma HCF Healthcare Facility HCFA Healthcare 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 HCRP Hospital 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 HDS hemodynamically 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 Hema hematest – 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 HFrEF heart failure with reduced ejection fraction HFM hand, foot and mouth disease HFMD HFNC high flow nasal cannula HFRS hemorrhagic fever with renal syndrome HGB hemoglobinHGHHuman 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 HHT hereditary hemorrhagic telangiectisia HHV human herpesvirus (including numerous subtypes such as HHV8) HI homicidal ideation Hib haemophilus influenzae B HIDA hepatobiliary iminodiacetic acid HIDS hyper-IgD (and periodic fever) syndrome HIE hypoxic 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 HMG human menopausal gonadotropin HMG-CoA 3-hydroxy-3-methyl-glutaryl-CoA HMGR 3-hydroxy-3-methyl-glutaryl-CoA reductase H-mole hydatidiform mole HMS hyperreactive malarial splenomegaly HMSN hereditary motor sensory neuropathy HN hemagglutinin-neuraminidase HND hemolytic disease of the newborn HNP spinal 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 HOB head 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 HPF high-power field (microscopy) HPI H/oPI history of the present illness HPOA hypertrophic pulmonary osteoarthropathy (clubbing) hPL human placental lactogen (same as human chorionic somatomammotropin) HPP hypokalemic periodic paralysis HPS hantavirus pulmonary syndrome HPV human papillomavirus HR heart rate hr hour or hours HRS Hepatorenal syndrome HRAS Harvey rat sarcoma viral oncogene homolog HRCT High-resolution computed tomography HRD homologous recombination deficiency HRT hormone replacement therapy h.s. at bedtime (from Latin hora somni) hs hours of sleep HS High Speed (+HS) (Collisions ≥35mph) H→S heel-to-shin test HSC human 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 hereditary spastic paraplegia HSV herpes simplex virus HT hypertension Ht height HTLV human T-lymphotropic virus HTN hypertension HTPA hypothalamic-pituitary-adrenal axis HTVD hypertensive vascular disease HUS hemolytic uremic syndrome HVA homovanillic acid HVLT high-velocity lead therapy (facetious term for gunshot wound) Hx history (of)

References