H
Hydrogen
h,hr
hour
HAART
highly active antiretroviral therapy (for AIDS)
HB, hgb, Hgb
hemoglobin
HbAlc
glycosylated hemoglobin (measured to test for diabetes)
HBV
hepatitis B virus
HCC
Hepatocellular carcinoma
HCG, hCG
human chorionic gonadotropin (secreted during pregnancy)
Het, HCT
hematocrit
HCV
hepatitis C virus
HD
hemodialysis (performed by artificial kidney machine); heart disease high-density
HDL
high-density lipoprotein (associated with decreased incidence of coronary artery disease)
HEENT
head, eyes, ears, nose, throat
Hg
Mercury
Hgb, hgb, Hb
hemoglobin
HIPAA
Health Insurance Portability and Accountability Act of 1996
HIV
human immunodeficiency virus
h/o
history of
H2O
water
H&P
history and physical (examination
HPV
human papillomavirus
HRT
hormone replacement therapy
h.s.
at bedtime (hora somni)
HSG
hysterosalpingography
HSV-1, HSV-2
herpes simplex virus type 1, type 2
HTN
hypertension
Hx
history
I
Iodine
I-131
Iodine-131 (radioactive iodine)
I&D
incision and drainage
IBD
inflammatory bowel disease (Crohn disease and ulcerative colitis)
IBS
irritable bowel syndrome (of unknown etiology)
ICD
implantable cardioverter-defibrillator
ICU
intensive care unit
ID
infectious disease
IgA, IgD, IgE, IgG, IgM
immunoglobulins (antibodies)
IM
intramuscular; infectious mononucleosis
INH
isoniazid (drug to treat tuberculosis)
INR
international normalized ratio (system for reporting results of blood coagulation tests)
I&O
intake and output (measurement of patient's fluids)
IOL
intraocular lens (implant)
IUD
intrauterine device (contraceptive)
IV
intravenous
IVF
in vitro fertilization
IVP
intravenous pyelography; intravenous push
K
Potassium
kg
kilogram (1 kg=1000 grams)
KS
Kaposi sarcoma (malignant lesion associated with AIDS)
KUB
kidney, ureter, bladder (x-ray study without contrast)
L, l
left; liter; lower
L1, L2
first lumbar vertebra, second lumbar vertebra
LA
Left atrium
LAD
left anterior descending artery (of the heart); lymphadenopathy
lat
lateral
LBP
low back pain; low blood pressure
LDH
lactic dehydrogenase (elevation associated with heart attacks)
LDL
low-density lipoprotein (high levels associated with heart disease)
LE
lupus erythematosus
LEEP
loop electrocautery excision procedure
LES
lower esophageal sphincter
LFTs
liver function tests
LLQ
left lower quadrant (abdomen)
LMP
last menstrual period
LP
lumbar puncture
LPM
licensed practical nurse
LTB
laryngotracheal bronchitis (croup)
LUQ
left upper quadrant (abdomen)
LV
left ventricle
LVAD
left ventricular assist device (bridge to cardiac transplantation)
L&W
living and well
lymphs
lymphocytes
lytes
electrolytes
m
meter; milli (one thousandth)
MAC
monitored anesthesia care
MCH
mean corpuscular hemoglobin (amount in each red blood cell)
MCHC
mean corpuscular hemoglobin concentration (amount per unit of blood)
MCV
mean corpuscular volume (size of individual RBC)
MD, M.D.
doctor of medicine; muscular dystrophy
MDI
metered dose inhaler
MDS
myelodysplastic syndrome (a bone marrow disorder)
mets
metastases
mg
milligram (1mg=1/1000g)
Mg
Magnesium
MH
marital history; mental health
MI
myocardial infarction (heart attack)
mL
milliliter (1mL=1/1000 liter)
mm
millimeter (1mm=1/1000m)
mm Hg
millimeters of mercury (units for measurement of blood pressure)
mono
monocytes (type of white blood cell)
MRA
magnetic resonance angiography
MRI
magnetic resonance imaging
MRSA
methicillin-resistant staphylococcus aureus
MS
mental status; mitral stenosis; multiple sclerosis
MSW
medical social worker
MTD
maximum tolerated dose
MVP
mitral valve prolapse
myop
myopia (nearsightedness)
N
Nitrogen
Na
Sodium
NB
newborn