Oligohydramnios is too little fluid in the amniotic sac. The amniotic sac is the water bag inside the uterus that cushions and protects your baby. It also allows normal growth and development to occur. Normal amniotic fluid levels vary. The average volume during pregnancy is almost one liter at 36-37 weeks.
Low amniotic fluid can indicate a problem in the mother or the baby. It can also cause problems that vary depending on when in pregnancy oligohydramnios occurs.
Problems in the first half of pregnancy may include:
Higher risk of miscarriage
Compression of the baby, leading to birth defects
Lack of lung development
Problems in the second half of pregnancy may include:
Oligohydramnios usually does not cause women to have any symptoms. If the amniotic sac has a tear, you may notice a gush of fluid from the vagina. The fluid may leak out slowly causing constant wetness. Your doctor may also notice that your abdomen is smaller than expected for your gestational age.
Your doctor will monitor you and your baby closely to make sure the condition does not get worse and that the fetus remains healthy. You will probably have more frequent prenatal visits and regular ultrasound tests. It is very important to keep these appointments.
Treatment options include:
intake, especially water.
Your doctor may add fluid to the amniotic sac after you are in labor. This will help cushion the umbilical cord during contractions.
The American College of Obstetricians and Gynecologists Committee. ACOG committee opinion no. 560: Medically indicated late-preterm and early-term deliveries..
Obstet Gynecol. 2013;121(4):908-910.