Dictionary > Oligohydramnios

Oligohydramnios

Definition
noun
A condition characterized by a deficiency of amniotic fluid
Supplement
The amniotic fluid is the fluid that surrounds the developing fetus within the amniotic sac. This environment cushions the baby from injury and plays an important role in fetal development. The volume of the amniotic fluid increases as the fetus develops and grows. It increases from approximately 25 mL to 400 mL from the 10th week to the 20th week of gestational age. And by the 28th week, it plateaus to 800 mL. At birth, there is about 1L of amniotic fluid.1 There are instances, however, when there is a deficiency of amniotic fluid in the amniotic sac. This condition is referred to as oligohydramnios. The amount of amniotic fluid below the typical normal level may implicate a gestational problem. The occurrence of oligohydramnios is found to cause clubbing of the feet and hands, contractures of the limbs, and hypoplastic lungs. A hypoplastic lung is an underdeveloped lung and life-threatening. The underdeveloped lung due to oligohyramnios may lead to inefficient lung function, particularly oxygenation, and to perinatal death.
Oligohydramnios is associated with prerenal, placental insufficiency, low-output cardiac failure, foetal demise, renal, renal agenesis, polycystic disease, multicystic dysplastic, postrenal, uPJ obstruction, megaureter, posterior urethral valves, urethral agenesis , etc. The aetiology is often unclear but it may lead to pulmonary hypoplasia and demise, renal, IUGR, prematureure of membranes .
Word origin: oligo- (few)
Also called:

  • oligamnios

Compare:

  • polyhydramnios
  • See also:

    • amnion
    • fluid
    • twin-to-twin transfusion syndrome
    • Potter syndrome

    Reference(s):

    1 Larsen, W. J. (2001). Human embryology (3. ed.). Philadelphia, Pa.: Churchill Livingstone. p. 490.


    You will also like...

    Geological Periods
    Geological Periods

    Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

    Lotic community of algal species
    Lotic Communities & Algae

    Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

    Schematic diagram of DNA replication
    DNA Structure & DNA Replication

    DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

    Chemical composition of the body
    Chemical Composition of the Body

    The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..

    temperature - abiotic factor
    Abiotic and Biotic Factors

    This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

    Growth and Plant Hormones
    Growth and Plant Hormones

    Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..