Creasy and Resnik's Maternal-Fetal Medicine: Principles and Practice. In: Lockwood CJ, Copel JA, Dugoff L, et al, eds. Gabbe's Obstetrics: Normal and Problem Pregnancies. In: Landon MB, Galan HL, Jauniaux ERM, et al, eds. Removing a sample of the fluid through amniocentesis can provide information about the sex, health, and development of the fetus.īurton GJ, Sibley CP, Jauniaux ERM. This condition may occur with late pregnancies, ruptured membranes, placental dysfunction, or fetal abnormalities.Ībnormal amounts of amniotic fluid may cause the health care provider to watch the pregnancy more carefully. Too little amniotic fluid is known as oligohydramnios. This condition can occur with multiple pregnancies (twins or triplets), congenital anomalies (problems that exist when the baby is born), or gestational diabetes. Too much amniotic fluid is called polyhydramnios. Protect the baby from outside injury by cushioning sudden blows or movements.The weekly volume increment then decreases and reaches zero at about 33 weeks of gestation at which point the mean AFV reaches its peak. Keep a constant temperature around the baby, protecting from heat loss At 8 weeks the volume increases by 10 mL/week, at 13 weeks the AFV increases by 25 mL/week and reaches a maximum rate of 60 mL/week at 21 weeks gestation.The developing baby to move in the womb, which allows for proper bone growth.The amniotic fluid constantly moves (circulates) as the baby swallows and "inhales" the fluid, and then releases it. About 600 mL of amniotic fluid surrounds the baby at full term (40 weeks gestation). The amount of amniotic fluid is greatest at about 34 weeks into the pregnancy (34 weeks gestation), when it averages 800 mL. While in the womb, the baby floats in the amniotic fluid. Amniotic fluid is a clear, slightly yellowish liquid that surrounds the unborn baby (fetus) during pregnancy.
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