Polyhydramnios is a medical condition describing an excess of amniotic fluid in the amniotic sac. It is seen in about 1% of pregnancies.[1][2][3] It is typically diagnosed when the amniotic fluid index (AFI) is greater than 24 cm.[4][5]
There are two clinical varieties of polyhydramnios: chronic polyhydramnios where excess amniotic fluid accumulates gradually, and acute polyhydramnios where excess amniotic fluid collects rapidly.
The opposite to polyhydramnios is oligohydramnios, not enough amniotic fluid.
^Alexander ES, Spitz HB, Clark RA (1982). "Sonography of polyhydramnios". AJR Am J Roentgenol. 138 (2): 343–6. doi:10.2214/ajr.138.2.343. PMID 7034509.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Hill LM, Breckle R, Thomas ML, Fries JK (January 1987). "Polyhydramnios: ultrasonically detected prevalence and neonatal outcome". Obstet Gynecol. 69 (1): 21–5. PMID 3540761.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Hobbins JC, Grannum PA, Berkowitz RL, Silverman R, Mahoney MJ (June 1979). "Ultrasound in the diagnosis of congenital anomalies". Am. J. Obstet. Gynecol. 134 (3): 331–45. doi:10.1016/s0002-9378(16)33043-5. PMID 453266.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Barnhard Y, Bar-Hava I, Divon MY (Nov 1995). "Is polyhydramnios in an ultrasonographically normal fetus an indication for genetic evaluation?". Obstet Gynecol. 173 (5): 1523–7. doi:10.1016/0002-9378(95)90643-6. PMID 7503195.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Brady K, Polzin WJ, Kopelman JN, Read JA (1992). "Risk of chromosomal abnormalities in patients with idiopathic polyhydramnios". Obstet Gynecol. 79 (2): 234–8. PMID 1731291.{{cite journal}}: CS1 maint: multiple names: authors list (link)
clinical varieties of polyhydramnios: chronic polyhydramnios where excess amniotic fluid accumulates gradually, and acute polyhydramnios where excess amniotic...
management of polyhydramnios as early as the late 1800s. Reductive amniocentesis is currently indicated for severe cases of polyhydramnios only. Twin...
amnioinfusion.[citation needed] The opposite of oligohydramnios is polyhydramnios, an excess volume of amniotic fluid in the amniotic sac. Amniotic fluid...
used as a cutoff value. An AFI larger than 24–25 cm is considered as polyhydramnios. There are many things that can cause low AFI, these include: Leaking...
duodenum. It causes increased levels of amniotic fluid during pregnancy (polyhydramnios) and intestinal obstruction in newborn babies. Newborns present with...
severity of the oligohydramnios. The opposite of oligohydramnios is polyhydramnios, or an excess of amniotic fluid. The amount of amniotic fluid available...
crosses the placenta and can reduce fetal urine production to treat polyhydramnios. It does so by reducing renal blood flow and increasing renal vascular...
healthy but physically large Gestational diabetes causing a larger baby Polyhydramnios Large for gestational age Hydatidiform Mole Breech birth As a pregnancy...
may be a marker for trisomy 18. Sometimes, excess amniotic fluid or polyhydramnios is exhibited. Although uncommon in the syndrome, trisomy 18 causes a...
related to the fetus and amniotic cavity amniotic fluid Oligohydramnios Polyhydramnios Braxton Hicks contractions chorion / amnion Chorioamnionitis Chorionic...
Cardiac, Tracheal, Esophageal, Renal, and Limbs. It is associated with polyhydramnios in the third trimester. This condition may be visible, after about 26...
to related problems including the rapid growth of the acardiac twin, polyhydramnios, umbilical cord entanglement and congestive heart failure due to high...
baby in the maternal pelvis, which can then be occupied by the cord. polyhydramnios, or an abnormally high amount of amniotic fluid prematurity: likely...
seen between 24 and 30 weeks of gestation with excess amniotic fluid (polyhydramnios). After birth, the infant is seen to urinate and drink excessively (polyuria...
rate. Women with abnormal amounts of amniotic fluid, whether too much (polyhydramnios) or too little (oligohydramnios), are also at risk. Anxiety and depression...
anencephaly and other malformations, cephalopelvic disproportion, and polyhydramnios. In an uncomplicated face presentation, duration of labor is not altered...
uterus (which may result from factors such as excessive amniotic fluid (polyhydramnios) or carrying more than one fetus (multifetal pregnancy)), and tobacco...
fetal symptoms are related to fluid retention, including ascites and polyhydramnios. Fetal hydrops suggests the presence of an important and probably fatal...
restriction, growth acceleration, large for gestational age (macrosomia), polyhydramnios (too much amniotic fluid), and birth defects. Thyroid disease in pregnancy...
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