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 |
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 |
LND | lymph node dissection |
LNG | levonorgestrel |
LNI | lymph node involvement |
LOA | left occipitoanterior (fetal position) 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) |
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 |
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 |