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Medical Abbreviations A thru Z

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G – H – I


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GC gonorrhea
GETT general by endotracheal tube
GFR glomerular filtration rate
GI gastrointestinal
gr grain;  1 grain = 65mg. Therefore Vgr = 325mg
GSW gun shot wound
gt or gtt drops
GTT glucose tolerance test
GU genitourinary
GXT graded exercise tolerance (Stress test)


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HA headache
HAA hepatitis  B surface antigen
HAV hepatitis A virus
HBP high blood pressure
HCG human chorionic gonadotropin
HCT hematocrit
HDL high density lipoprotein
HEENT head, eyes, ears, nose, throat
Hgb hemoglobin
H/H henderson- hasselbach equation or hemoglobin/ hematocrit
HIV human immunodeficiency virus
HLA histocompatibility locus antigen
HJR hepatojugular reflex
HO history of
HOB head of bed
HPF high power field
HPI history of present illness
HR heart rate
HS at bedtime
HSM hepatosplenomegaly
HTLV-III human lymphotropic virus, type III (AIDS agent, HIV)
HSV herpes simplex virus
HTN hypertension
Hx history

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I&D incision and drainage
I&O intake and output
ICS intercostal space
ICU intensive care unit
ID infectious disease or identification
IDDM insulin dependent diabetes mellitus
IG immunoglobulin
IHSS idiopathic hypertropic subaortic stenosis
IM intramuscular
IMV intermittent mandatory ventilation
INF intravenous nutritional fluid
IPPB intermittent positive pressure breathing
IRBBB incomplete right bundle branch block
IRDM insulin resistant diabetes mellitus
IT interthecal
ITP idiopathic thrombocytopenic purpura
IV intravenous
IVC intravenous cholangiogram  | inferior vena cava
IVP intravenous pyelogram
G – H – I