What is normal range for amniotic fluid?
A normal amniotic fluid index is 5 cm to 25 cm using the standard assessment method. Less than 5 cm is considered oligohydramnios, and greater than 25 cm is considered polyhydramnios.
What level of amniotic fluid is too low?
Doctors use a scale called the amniotic fluid index (AFI) to check healthy levels of amniotic fluid. AFI measurements are in centimeters (cm). A typical AFI score is 5–25 cm . An AFI score lower than 5 cm is too low, and doctors refer to this as oligohydramnios.
What is the normal AFI at 30 weeks?
From a median of 10.3 cm (range, 8.7-13.7, 5th-95th percentile) at 15 weeks’ gestation, the amniotic fluid index rose progressively to a maximum median of 14.0 cm (range, 4.0-18.6) at 30 weeks. The index then gradually declined to a median of 9.1 cm (range, 4.8-14.2) by 40 weeks’ gestation.
What is the normal range of amniotic fluid?
– Fetal breathing (continuous movement of the fetal diaphragm for at least 30 seconds) – Fetal movement (at least three discrete movements of the fetal body or limbs) – Fetal tone (at least one active extension of a fetal limb with return to flexion, or opening and closing of the fetal hand) – Amniotic fluid volume (single deepest pocket of at least 2 cm)
What causes too little amniotic fluid?
Leaking of amniotic fluid,which may be caused by the sac breaking
What are the risks of too much amniotic fluid?
Too much amniotic fluid can cause the mother’s uterus to become overdistended and may lead to preterm labor or premature rupture of membranes (the amniotic sac). Hydramnios is also associated with birth defects in the fetus. When the amniotic sac ruptures, large amounts of fluid leaving the uterus may increase the risk of placental abruption
What is normal amniotic fluid index?
Usually, the normal value of amniotic fluid index varies from 50 mm to 250 mm (or 5 cm to 25 cm). Normal AFI varies from 80 mm to 180mm. An average AFI level is 80 mm to 140 mm when you are in your 20 weeks to 35 weeks of pregnancy. After 35 week, AFI levels usually begin to reduce.