amniotic band syndrome


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to amniotic band syndrome: amniotic fluid

amniotic

 [am″ne-ot´ik]
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.

amniotic band sequence

activity comprising early rupture of the amnion with formation of bands that adhere to or compress parts of the fetus, resulting in a wide variety of anomalies: craniofacial defects, amputation of a limb, and abdominal evisceration.

amniotic band syndrome

A triad of amnion-denuded placenta; foetal attachments to, or entanglement by, amniotic remnants; and foetal deformation, malformation or limb disruption.

amniotic band 'syndrome'

Obstetrics A triad of amnion-denuded placenta, fetal attachments to, or entanglement by, amniotic remnants, and fetal deformation, malformation, or limb disruption. See ADAM complex, Sequence.
References in periodicals archive ?
Konar, "Median facial cleft in amniotic band syndrome," Middle East African Journal of Ophthalmology, vol.
(27.) Das SK, Maharana SS, Subudhi M, Rao PV The limbabdominal wall complex defects, a form of amniotic band syndrome: a rare case report.
Many other associations have been found with pentalogy of Cantrell, which include the following: Amniotic band syndrome with limb anomalies, structural cardiac defects with pericardial effusion, exencephaly, cystic hygroma, infraumbilical defects with cloacal and bladder exstrophy, and bilateral inguinal hernias.
She was born with a rare condition called amniotic band syndrome, which left her with deformities to her right hand and both feet.
It was the only way he could think of to cope with the searing pain in his hand, the result of Amniotic Band Syndrome his mother suffered while pregnant, causing an amniotic membrane to wrap around his hand.
William's hand was lost as a result of amniotic band syndrome, where fibrous bands in the womb restrict the blood flow to limbs.
The other complications of SSDM include pseudo-monoamniotic pregnancy, amniotic band syndrome and preterm labor.