Amniotic fluid images7/7/2023 This may be evident in cases of leaking fluid from a tear in the amniotic membranes, measuring small for a certain stage of pregnancy or if the fetus is not moving as much as it would be expected to. Oligohydramnios is present when the amniotic fluid index (AFI) seen on ultrasound measures less than 5 cm (a normal index is 5-25cm) and the maximum vertical pocket (MVP) is less than 2 cm. Low levels of amniotic fluid, referred to as oligohydramnios, occur in 4 percent of all pregnancies and 12 percent of post-date pregnancies. Polyhydramnios, also referred to as hydramnios or amniotic fluid disorder, is when there is too much fluid. Oligohydramnios is when there is too little amniotic fluid. Some conditions can cause there to be more or less than the normal amounts of amniotic fluid. When this happens, it is time to contact the health provider as delivery may be imminent. According to Today’s Parent, only about 15 percent of waters break upon the onset of labor. The waters usually break toward the end of the first stage of labor. The amniotic fluid contained within the sac then begins to leak out via the cervix and vagina. When the waters break, the amniotic sac tears. Normally, the level of amniotic fluid is at its highest around 36 of pregnancy, measuring around 1 quart. This cord transports food and oxygen from the placenta to the growing fetus.
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