Amniotic fluid

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Related to Amniotic fluid: placenta, Amniotic fluid embolism


pertaining to the amnion.
amniotic band syndrome a condition characterized by isolated or multiple constriction defects of the fingers, toes, limbs, and less frequently the skull, face, or viscera. It results from a tear of unknown etiology in the amnion, which allows amniotic fluid and fetal parts to escape from the amnion into the chorion. When the amnion and chorion are separated, strands from either the maternal amnion or the fetal chorion may entangle fetal parts. As the fetus grows the strands become more constrictive, causing defects.
amniotic fluid the albuminous fluid contained in the amniotic sac; called also liquor amnii and, informally, waters. The fetus floats in this fluid, which serves as a cushion against injury from sudden blows or movements and helps maintain a constant body temperature for the fetus. Normally the fluid is clear and slightly alkaline; discoloration or excessive cloudiness may indicate fetal distress or disease, as in erythroblastosis fetalis in which fluid is usually greenish yellow. The amount varies from 500 to 1500 ml.

An excessive amount of amniotic fluid (more than 2000 ml) is called hydramnios; the amount may be as much as several gallons. The cause of this condition is unknown but it frequently accompanies multiple pregnancy or some congenital defect of the fetus, especially hydrocephalus and meningocele.

An abnormally small amount of amniotic fluid is referred to as oligohydramnios; there may be less than 100 ml of fluid present. The cause is unknown. The condition may produce pressure deformities of the fetus, such as clubfoot or torticollis. Adhesions may result from direct contact of the fetus with the amnion.

Removal of a sample of amniotic fluid from the pregnant uterus is called amniocentesis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

amniotic fluid

The fluid that surrounds the foetus in the amniotic sac, which cushions it from injury and plays a central role in foetal development; osmolality, sodium, creatinine and urea content of AF and maternal serum are virtually identical.
± 800 mL at birth; specific gravity ±1.008; pH, 7.2.

Amniotic fluid analysis  
• Isoimmunisation of RBCs—Bilirubin levels; 
• Genetic defects—Karyotype foetal cells.
Determine foetal maturity—Creatinine, lecithin/sphingomyelin ratio, surfactant.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

amniotic fluid

liquor amnioticus Obstetrics The fluid that surrounds the fetus in the amniotic sac, which cushions it from injury and plays a central role in fetal development; osmolality, sodium, creatinine, and urea content of AF and maternal serum are virtually identical Volume ± 800 mL at birth; specific gravity, ±1.008; pH, 7.2
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

am·ni·on·ic flu·id

, amniotic fluid (am'nē-on'ik flū'id, am'nē-ot'ik)
A liquid within the amnionic sac that surrounds embryo, and later, the fetus and protects it from mechanical injury.
Synonym(s): liquor amnii.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

amniotic fluid

A liquid produced by one of the membranes which surround the fetus throughout pregnancy and by fetal urination, in which the fetus floats. The volume of amniotic fluid at full term is usually about 1 litre.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Amniotic fluid

The liquid that surrounds the baby within the amniotic sac. Because it is composed mostly of fetal urine, a low amount of fluid can indicate inadequate placental blood flow to the fetus.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

Patient discussion about Amniotic fluid

Q. Is wine or beer safer to drink than liquor? My new girl friend requests me to quit liquor. Is wine or beer safer to drink than liquor?

A. Wine or beer is not safer to drink than liquor. Liquor is liquor. A twelve - ounce beer has the same amount of alcohol as a five - ounce glass of wine, or 1.5 - ounce shot of liquor. It is the amount of ethanol consumed that affects a person most, not the type of alcoholic drink.

Q. Is holding liquor a sign of a drinking problem? How can I have a drinking problem if I can hold my liquor? Is holding liquor a sign of a drinking problem?

A. "being able to hold your liquor" is actually the liver gathering forces...let's imagine that our liver is a factory that disables alcohol as a poison. and i have a 100 workers over there. if i'll drink great amount of alcohol my workers will be busy and most of the alcohol will run along in my body. but after a few times i'll hire more workers. then less alcohol will run along my body and i'll disable it fast. same thing in your body.

Q. I drink liquor a lot maybe 4x a week and I love drinking but after a couple days my veins star to hurt...Y? It runs in the familly alcohol and bud but I wish I could go a whole year withought poppin bottles.. what will be perscibed to a alki?


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References in periodicals archive ?
During the study period the total number of deliveries was 1898 and 149 (7.85%) cases had meconium stained amniotic fluid. Out of 149 cases of MSAF, 18 (12%) neonates developed meconium aspiration syndrome.
The mean amniotic fluid volume was 4.47 [+ or -] 1.06 cm with gray-scale sonography versus 4.26 [+ or -] 1.32 cm with colour Doppler sonography, which the difference was significant (p<0.0001).
Amniotic fluid stem cells express a variety of markers, amniotic fluid stem cells Tsai De and Coppi groups isolate express Nanog, SH2, SH3, SH4, OCT4, CD29, CD44, CD73, CD90, SSEA4 and HLA-ABC, express CD90, CD105, Tra-1-60, HLA-ABC and HLA-DR lowly, 90 proportion of CAFSCs express Oct4 (Zhang et al., 2009).
Predictors of meconium stained amniotic fluid: a possible strategy to reduce neonatal morbidity and mortality.
Adjaye, "Generation of iPSC lines from primary human amniotic fluid cells," Stem Cell Research, vol.
Leighton, "Amniotic Fluid Embolism, March of Dimes," 2013, http://www.
Although neurotrophins may originate from several origins, like maternal, placental, or fetal compartments, there is evidence that BDNF in second trimester amniotic fluid is mainly of fetal origin [29].
The research group has also shown another potential use for MSCs purified from full-term amniotic fluid. By converting these cells to an embryonic-like stem cell state, they can potentially give rise to all different cell types of the body, including neural cells, blood cells and heart cells, among others.
The calculated sample size was found to be 61 premature infants randomly assigned to the amniotic fluid (n=30) and control (n=31) groups.
With an 18 gaugexU/2 inch hypodermic needle, a hole was drilled through the egg air sac from the broad end of the egg to locate the amniotic cavity after which the amniotic fluid was aspirated using a 21 gaugex1/2 inch needle into a 5 mL syringe from the amniotic cavity.
Flake envisions that a decade from now, hospitals will be equipped with chambers filled with artificial amniotic fluid, where premature infants can continue to gestate.
As the presence of amniotic fluid is vital to lung development, bilateral renal agenesis is deemed to be uniformly fatal due to associated pulmonary hypoplasia.