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Amniotic fluid index (AFI) is a quantitative estimate of amniotic fluid [1] and an indicator of fetal well-being. It is a separate measurement from the biophysical profile. [1] AFI is the score (expressed in centimetres) given to the amount of amniotic fluid seen on ultrasonography of a pregnant uterus.
The volume of amniotic fluid changes with the growth of fetus. From the tenth to the 20th week it increases from 25 to 400 millilitres (0.88 to 14.08 imp fl oz; ...
Polyhydramnios is a medical condition describing an excess of amniotic fluid in the amniotic sac.It is seen in about 1% of pregnancies. [1] [2] [3] It is typically diagnosed when the amniotic fluid index (AFI) is greater than 24 cm. [4] [5] There are two clinical varieties of polyhydramnios: chronic polyhydramnios where excess amniotic fluid accumulates gradually, and acute polyhydramnios ...
Ideally, weight loss should continue until you reach a healthy body mass index (BMI). ... This is from your baby’s weight and things like your placenta, amniotic fluid, and blood volume.
The presence of these biophysical variables implies absence of significant central nervous system hypoxemia/acidemia at the time of testing. By comparison, a compromised fetus typically exhibits loss of accelerations of the fetal heart rate (FHR), decreased body movement and breathing, hypotonia, and, less acutely, decreased amniotic fluid volume.
The volume of amniotic fluid typically increases until 36 weeks and starts decreasing after 40 weeks in post-term gestations. [4] For this reason, discrepancies between fundal height measurements and gestational age can be a clinical indication of amniotic fluid abnormality and should be evaluated by ultrasound.
[1] [2] Leakage of amniotic fluid can result in oligohydramnios, or an amniotic fluid volume that is less than the minimum expected for gestational age. [1] Adequate amniotic fluid volumes are essential for fetal lung development. [41]
Glycine:Valine ratio increases in amniotic fluid; Increase in ammonia in amniotic fluid (positive correlation with ponderal index) Fatty acids: Decrease in long-chain polyunsaturated fatty acids; Decrease in overall fatty acid transport via umbilical cord; Oxygen and Carbon dioxide: Degree of hypoxemia is proportional to villous damage