H. pyloriHelicobacter pylori
H&Hhemoglobin and hematocrit
HA-WBRThippocampal avoidance whole-brain radiotherapy
HAARThighly active antiretroviral therapy
HAEhuman airway epithelia
HAGMAHigh Anion Gap Metabolic Acidosis
HAMHTLV-1 associated myelopathy
HAM-DHamilton Depression Rating Scale
HAPhospital-acquired pneumonia
HAPEhigh altitude pulmonary edema
HAS-BLEDhypertension, abnormal renal and liver function, stroke, bleeding, labile INR, elderly, drugs or alcohol
HASTIHeaviness, Achiness, Swelling, Throbbing, Itching
HAThypoxanthine, aminopterin, thymidine
HAVBhigh-grade atrioventricular block
HBeAghepatitis B e-antigen
HBOThyperbaric oxygen therapy
HBsAgHepatitis B surface antigen
HCAPhealthcare-associated pneumonia
HCCHepatocellular Carcinoma
HCGHuman Chorionic Gonadotropin
HCMhypertrophic cardiomyopathy
HCMVhuman cytomegalovirus
HCoV-229Ehuman coronavirus 229E
HCPCSHealthcare Common Procedure Coding System
HCVDhypertensive cardiovascular disease
HD-MTXhigh-dose methotrexate
hDBShypothalamic deep brain stimulation
HDChistidine decarboxylase
HDFNhemolytic disease of the fetus and newborn
HDLhigh density lipoprotein
HDLPHDL particle concentration
HDNhemolytic disease of the newborn
HEhemagglutinin–acetylesterase
HEARTHistory, EKG, Age, Risk factors, initial Troponin
HEENThead, eyes, ears, nose, throat
HeFHheterozygous familial hypercholesterolaemia
HER2human epidermal growth factor receptor 2
HESX1homeobox expressed in embryonic stem cells 1
HFAhydrofluoroalkane-134a
HFCChigh-frequency chest clearance
HFCWOhigh-frequency chest wall oscillation
HFNCHigh-Flow Nasal Cannula
HFpEFheart failure with preserved ejection fraction
HFrEFheart failure with reduced ejection fraction
HGFhepatocyte growth factor
HHSHyperglycemic Hyperosmolar Syndrome
HIDAhepatobiliary iminodiacetic acid scan
HIEhypoxic-ischemic encephalopathy
HIF-1hypoxic inducible factor-1
HIFUHigh Intensity Focused Ultrasound
HIPAAHealth Insurance Portability and Accountability Act
HIPECHyperthermic Intraperitoneal Chemotherapy
HIT-6Headache Impact Test
HIVhuman immunodeficiency virus
HL/Shigh ligation and stripping
HLAhuman leukocyte antibody
HLA-B27human leukocyte antigen B27
HLDHandicapping Labio-Lingual Deviation
HLShigh ligation and stripping
HMEhome medical equipment
HMG-CoAhydroxymethyl glutaryl coenzyme A
HMGB1high mobility group box 1
HMNhypoglossal motor nucleus
HNMThistamine N-methyltransferase
HNPHerniated Nucleus Pulposus
HNShypoglossal nerve stimulation
HNSCChead and neck squamous cell carcinoma
HOCMHypertrophic Obstructive Cardiomyopathy
HoLEPholmium laser enucleation of the prostate
HOMAHomeostatic Model Assessment
HOMA-IRhomeostatic model assessment of insulin resistance
HPAhypothalamic-pituitary-adrenal
HPIhistory of present illness
HPLhuman placental lactogen
HPSHantavirus pulmonary syndrome
HRMhigh-resolution manometry
HRQLhealth-related quality of life
HRRhomologous recombination repair
HRThormone replacement therapy
HS-CRPhigh sensitivity C-reactive protein
HSAThome sleep apnea test
HSChematopoietic stem cells
HSCThematopoietic stem cell transplant
HSDSheight standard deviation score
HSKherpetic stromal keratitis
HSPHenoch-Schönlein purpura
HSPGHeparan Sulfate Proteoglycan
HSROChierarchical summary receiver operating characteristic
HTChumidified trach collar
HTLVhuman T-cell lymphotropic virus
HUDHumanitarian Use Device
HUShemolytic-uremic syndrome
HUVEChuman umbilical vein endothelial cell
HVhypertensive vasculopathy
HZOherpes zoster ophthalmicus