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Oligohydramnios is a medical condition in pregnancy characterized by a deficiency of amniotic fluid, the fluid that surrounds the fetus in the abdomen, in the amniotic sac. The limiting case is anhydramnios , where there is a complete absence of amniotic fluid.
Oligohydramnios is the cause of Potter sequence, but there are many things that can lead to oligohydramnios. It can be caused by renal diseases such as bilateral renal agenesis (BRA), atresia of the ureter or urethra causing obstruction of the urinary tract, polycystic or multicystic kidney diseases, renal hypoplasia , amniotic rupture ...
Oligohydramnios can sometimes be treated with bed rest, oral and intravenous hydration, antibiotics, steroids, and amnioinfusion. [citation needed] The opposite of oligohydramnios is polyhydramnios, an excess volume of amniotic fluid in the amniotic sac. Amniotic fluid embolism is a rare but very often fatal condition for both mother and child.
Twin oligohydramnios-polyhydramnios sequence is a rare condition that may occur when twins sharing a single placenta develop significant vascular cross-connections, known as anastomoses, resulting in blood flowing away from one twin to the other. [23] This process can result in polyhydramnios in one twin and oligohydramnios in the other twin. [23]
Post-maturity syndrome is the condition of a baby born after a post-term pregnancy, first described by Stewart H. Clifford in 1954. [1] Post-maturity refers to any baby born after 42 weeks gestation, or 294 days past the first day of the mother's last menstrual period.
Those abruptions caused by venous bleeding at the periphery of the placenta develop more slowly and cause small amounts of bleeding, intrauterine growth restriction, and oligohydramnios (low levels of amniotic fluid).
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Following the Chernobyl disaster, it was assumed in the 1990s that the germ line of irradiated fathers suffered minisatellite mutations in the DNA, which was inherited by descendants. [ 30 ] [ 87 ] More recently, however, the World Health Organization states, "children conceived before or after their father's exposure showed no statistically ...