low birth weight

weight

 [wāt]

1. heaviness; the degree to which a body is drawn toward the earth by gravity. (See also Tables of Weights and Measures in the Appendix.) Abbreviated wt.

2. in statistics, the process of assigning greater importance to some observations than to others, or a mathematical factor used to apply such a process.

apothecaries' weight see apothecaries' system.

atomic weight the sum of the masses of the constituents of an atom, expressed in atomic mass units (or daltons), in SI units (i.e., kilograms), or as a dimensionless ratio derived by comparing the mass to the mass of an atom of carbon-12, which is taken as 12.000. Abbreviated At wt.

avoirdupois weight see avoirdupois system.

equivalent weight the amount of substance that combines with or displaces 8.0 g of oxygen (or 1.008 g of hydrogen), usually expressed in grams; for acid/base reactions, one equivalent donates or receives a mole of protons and the equivalent weight is the ratio of the molecular weight to the number of protons involved in the reaction. For oxidation-reduction reactions, one equivalent donates or receives a mole of electrons and the equivalent weight is the ratio of the molecular weight to the number of electrons involved in the reaction.

gram molecular weight the molecular weight of a substance expressed in grams; one gram molecular weight of a molecular substance contains one mole of molecules. See also mole¹.

low birth weight (LBW) see under infant.

molecular weight the weight of a molecule of a chemical compound as compared with the weight of an atom of carbon-12; it is equal to the sum of the weights of its constituent atoms and is dimensionless. Abbreviated Mol wt or MW. Although widely used, the term is not technically correct; relative molecular mass is preferable.

very low birth weight (VLBW) see under infant.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

low birth weight

Neonatology Referring to an infant weight from 1500 g to 2500 g at birth; LBW is a risk factor a sui generis for M&M in early infancy, defined as < 2500 g at birth; moderate LBW–1500-2500 g; very low birth weight infants < 1500 g account for 50% of neonatal deaths Survival 85-95% > 1250 g; 65-75% > 800 g, 2% if < 600 g. See Appropriate for gestational age, Extremely low birth weight, Intrauterine growth retardation, Prematurity, Small for gestational age.

Very low birthweight Children–outcomes

Birthweight  ≤ 750 g  > X <  ≥ 1.5 kg

Sample number  68 65 61

MPC score*  87 93 100

Mental retardation–IQ < 70 21% 8% 2%

Poor cognitive function 22% 9% 2%

Poor academic skills 27% 9% 2%

Poor gross motor function  27% 9% 0%

Poor adaptive function  25% 14% 2%

Cerebral palsy 9% 6% 0%

Severe visual disability 25% 5% 2%

Hearing disability  24% 13% 3%

< Normal Wt/Ht/HS 22/25/35% 11/5/14% 0/0/2%%

*Mental Processing Composite score

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

low birth weight

(LBW) (lō bǐrth wāt)

Birth weight less than 2500 g. Can be due to a range of factors, including interference with intrauterine growth or premature birth.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Patient discussion about low birth weight

Q. How to loss weight like a diet with tea,pills or other kind of healthy thing.

A. drink 8 oz of warm water with 1 tablespoon of lemon... first thing in the morning

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