616 APPENDIX E• Abbreviations and SymbolsIRDS infant respiratory distress syndrome
IT intensive therapy
IUD intrauterine device
IUGR intrauterine growth rate;
intrauterine growth retardation
IV intravenous
IVC intravenous cholangiogram;
intravenous cholangiography
IVF in vitro fertilization
IVF-ET in vitro fertilization and embryo
transfer
IVP intravenous pyelography
K
K potassium (an electrolyte)
KD knee disarticulation
KUB kidney, ureter, bladder
L
L liter
L1, L2, and so on first lumbar vertebra, second
lumbar vertebra, and so on
LA left atrium
LASIK laser-assisted in situ keratomileusis
LAT, lat lateral
LBBB left bundle branch block
LD lactate dehydrogenase; lactic acid
dehydrogenase (cardiac enzyme)
LDL low-density lipoprotein
LES lower esophageal sphincter
LFT liver function test
LH luteinizing hormone
LLQ left lower quadrant
LMP last menstrual period
LOC loss of consciousness
LP lumbar puncture
LPR laryngopharyngeal reflux
LS lumbosacral spine
LSO left salpingo-oophorectomy
lt left
LUQ left upper quadrant
LV left ventricle
lymphos lymphocytes
M
MCH mean cell hemoglobin (average
amount of hemoglobin per red
cell)HD hemodialysis; hip disarticulation;
hearing distance
HDL high-density lipoprotein
HDN hemolytic disease of the newborn
HDV hepatitis D virus
HEV hepatitis E virus
HF heart failure
HIV human immunodeficiency virus
HMD hyaline membrane disease
HNP herniated nucleus pulposus
(herniated disk)
H 2 O water
HP hemipelvectomy
HPV human papillomavirus
HRT hormone replacement therapy
h.s.* at bedtime
hs* half strength
HSG hysterosalpingography
HSV herpes simplex virus
HTN hypertension
Hx history
I, J
IAS interatrial septum
I&D incision and drainage; irrigation
and débridement
IBD irritable bowel disease
IBS irritable bowel syndrome
ICD implantable cardioverter-
defibrillator
ICP intracranial pressure
ICU intensive care unit
ID intradermal
IDDM insulin-dependent diabetes
mellitus
Ig immunoglobulin
IM intramuscular; infectious
mononucleosis
IMP impression (synonymous with
diagnosis)
IOL intraocular lens
IT intensive therapy
IVP intravenous pyelogram;
intravenous pyelography
IOP intraocular pressure
IPPB intermittent positive-pressure
breathingAbbreviation Meaning Abbreviation Meaning3971_App E_613-621 13/02/14 11:26 AM Page 616