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J Korean Soc Matern Child Health > Volume 23(1); 2019 > Article
Journal of The Korean Society of Maternal and Child Health 2019;23(1):1-6.
DOI: https://doi.org/10.21896/jksmch.2019.23.1.1    Published online January 31, 2019.
The Isolated Oligohydramnios
Yun Sook Kim
Department of Obstetrics and Gynecology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
원인미상의 양수과소
Correspondence:  Yun Sook Kim,
Email: drsook@schmc.ac.kr
Amniotic fluid is an indicator of normal placental function and is essential for normal fetal lung maturation. Amniotic fluid index (AFI) is the most preferred method of amniotic fluid measurement in pregnancy although single deepest pocket (SDP) is also used. To measure AFI, the examiner divides the uterus into four equal quadrants. AFI is the sum of deepest pocket from each quadrant. The normal AFI ranges between 5~24 cm while any value above 24 cm is considered as hydramnios and that below 5 cm is indicated as oligohydramnios. An adequate volume of amniotic fluid is critical to allow normal fetal movement and growth, while also cushioning the fetus and umbilical cord. Regardless of the etiology, oligohydramnios may inhibit these processes and may lead to fetal deformation, umbilical cord compression, and death in some instances. Oligohydramnios can be due to underproduction, loss, or sometimes, isolated. Isolated oligohydramnios has been found to be responsive maternal hydration and is neither a malformation of the urinary system in the fetus, nor a rupture of amnion and due to genetic cause. The author would like to introduce a way to increase amniotic fluid volume in isolated oligohydramnios which is expect to improve the perinatal outcomes.
Key Words: amniotic fluid volume, isolated, oligohydramnios, maternal hydration
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