Abbreviation
|
Meaning
|
L |
leukocytes lumbar vertebrae (L1 to L5)
|
L&D |
labor and delivery
|
LA |
left atrium lymphadenopathy local anesthetic
|
LAAM |
L-alpha-acetylmethadol
|
Lab |
laboratory (in health care, usually referring to clinical laboratory)
|
LABA |
long-acting beta agonist
|
LABBB |
left anterior bundle branch block
|
Lac |
laceration lactate
|
LAD |
left anterior descending (a coronary artery) leukocyte adhesion deficiency left axis deviation (see electrocardiogram) lymphadenopathy
|
LAE |
left atrial enlargement
|
LAH |
left anterior hemiblock
|
LAHB |
left anterior hemiblock
|
Lam |
laminectomy
|
LAN |
lymphadenopathy
|
LAP |
leukocyte alkaline phosphatase
|
Lap |
laparotomy
|
Lap appy |
laparoscopic appendectomy
|
LAR |
low anterior resection
|
LARP |
left → anterior, right → posterior (path of the vagi as they wander from thorax to abdomen)
|
LAS |
lymphadenopathy syndrome
|
Lat |
lateral
|
lb LB |
pound or pounds (mass)
|
LBBB |
left bundle branch block
|
LBO |
large bowel obstruction
|
LBP |
low back pain
|
LBW |
low birth weight
|
LCA |
left coronary artery
|
LCHAD |
long-chain 3-hydroxyacyl-coenzyme A dehydrogenase
|
LCIS |
lobular carcinoma in situ
|
LCM |
lymphocytic meningitis
|
LCMV |
lymphocytic choriomeningitis virus
|
LCP |
Liverpool Care Pathway for the Dying Patient
|
LCPD |
Legg–Calvé–Perthes disease
|
LCV |
leukocytoclastic vasculitis
|
LCX |
left circumflex artery
|
L&D |
labor and delivery
|
LDH |
lactate dehydrogenase
|
LDL |
low-density lipoprotein
|
LDL-C |
low-density lipoprotein cholesterol
|
L-DOPA |
levo-dihydroxyphenylalanine
|
LEC |
lupus erythematosus cell
|
LEEP |
loop electrical excision procedure
|
LES |
lower esophageal sphincter lupus erythematosus systemicus
|
LE |
lupus erythematosus lower extremity (human leg)
|
leu |
leukocytes
|
LFT |
liver function test
|
LGA |
large for gestational age
|
LGL |
Lown–Ganong–Levine syndrome
|
LGM |
lymphogranulomatosis maligna
|
LGSIL |
low-grade squamous intraepithelial lesion
|
LGV |
lymphogranuloma venereum
|
LH |
luteinizing hormone lightheadedness
|
LHC |
left heart catheterization
|
LHRH |
luteinizing hormone–releasing hormone
|
Lig |
ligament
|
LIH |
left inguinal hernia
|
LLD |
leg length discrepancy
|
LLE |
left lower extremity
|
LLETZ |
large loop excision of the transformation zone
|
LLL |
left lower lobe
|
LLQ |
left lower quadrant
|
LM |
left main
|
LMA |
left mentoanterior (fetal position) laryngeal mask airway
|
LMCA |
left main coronary artery
|
LMD |
local medical doctor
|
LMP |
last menstrual period—first day of the menstrual period low malignant potential
|
LMWH |
low-molecular-weight heparin
|
LN |
lymph node Logical Observation Identifiers Names and Codes (LOINC)
|
LND |
lymph node dissection
|
LNG |
levonorgestrel
|
LNI |
lymph node involvement
|
LOA |
left occipitoanterior (fetal position) level of activity lysis of adhesions
|
LOC |
loss of consciousness level of consciousness (e.g., "altered LOC from head trauma")
|
LOF |
leakage of fluid
|
LOH |
loss of heterozygosity
|
LOI |
loss of imprinting
|
LOL |
little old lady (often LOL in NAD—see House of God) lymph-obligatory load
|
LOM |
limitation of motion
|
LOP |
left occiput posterior (fetal position)
|
LORTA |
loss of resistance to air (in anesthesiology; when placing epidural, LORTA indicates entrance of needle to epidural space)
|
LOS |
length of stay
|
Lot |
lotion
|
LOT |
left occiput transverse (fetal position)
|
Lp |
lipoprotein
|
LP |
lumbar puncture
|
LPH |
left posterior hemiblock (see heart block)
|
LPL |
lipoprotein lipase
|
LPP |
lichen planopilaris
|
LQTS |
long QT syndrome
|
L/S |
lecithin-to-sphingomyelin ratio
|
LS |
lichen sclerosus Lynch syndrome
|
LSA |
lichen sclerosis et atrophicus
|
LSB |
left sternal border
|
LSCS |
Lower Segment Cesaerian Section
|
LSIL |
low-grade squamous intraepithelial lesion
|
LST |
laterally spreading tumor
|
LR |
lactated Ringer's solution
|
LRINEC |
Laboratory Risk Indicator for Necrotizing Soft Tissue Infections Score
|
LRTI |
lower respiratory tract infection
|
LSCTA |
lung sounds clear to auscultation
|
LT |
heat-labile enterotoxin
|
LTAC |
long-term acute care
|
LTCS |
low transverse cesarean section
|
LUL |
left upper lobe (of lung)
|
LUQ |
left upper quadrant (of abdomen)
|
LUS |
lower uterine segment
|
LUTS |
lower urinary tract symptoms
|
LV |
left ventricle
|
LVAD |
left ventricular assist device
|
LVEDP |
left ventricular end diastolic pressure
|
LVEF |
left ventricular ejection fraction
|
LVF |
left ventricular failure
|
LVH |
left ventricular hypertrophy
|
LVOT |
left ventricular outflow tract
|
LVP |
Large volume paracentesis
|
LWBS |
left without being seen
|
Lx of ch |
laxative of choice
|
Ly |
lymphocytes
|
lytes |
electrolytes
|