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Oligohydramnios. Oligohydramnios is a medical condition in pregnancy characterized by a deficiency of amniotic fluid, the fluid that surrounds the fetus in the abdomen, in the amniotic sac. The limiting case is anhydramnios, where there is a complete absence of amniotic fluid. It is typically diagnosed by ultrasound when the amniotic fluid ...
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. To determine the AFI, doctors may use a ...
The lecithin–sphingomyelin ratio is a marker of fetal lung maturity. The outward flow of pulmonary secretions from the fetal lungs into the amniotic fluid maintains the level of lecithin and sphingomyelin equally until 32–33 weeks gestation, when the lecithin concentration begins to increase significantly while sphingomyelin remains nearly the same.
Amniotic fluid is removed from the mother by an amniocentesis procedure, where a long needle is inserted through the abdomen into the amniotic sac, using ultrasound guidance such that the fetus is not harmed. Amniocentesis is a low risk procedure, with risk of pregnancy loss between 1 in 1,500 – 1 in 700 procedures.
Placental abruption is when the placenta separates early from the uterus, in other words separates before childbirth. [2] It occurs most commonly around 25 weeks of pregnancy. [2] Symptoms may include vaginal bleeding, lower abdominal pain, and dangerously low blood pressure. [1] Complications for the mother can include disseminated ...
Low levels of amniotic fluid due to mid-trimester or previable PPROM (before 24 weeks) can result in fetal deformity (e.g. Potter-like facies), limb contractures, pulmonary hypoplasia (underdeveloped lungs), [11] infection (especially if the mother is colonized by group B streptococcus or bacterial vaginosis), prolapsed umbilical cord or ...
A score of 6/10 with normal amniotic fluid is considered equivocal, and a repeated test within 24 hours may be needed. A score of 4/10 or less is considered abnormal, and delivery may be indicated. [29] Low amniotic fluid can cause pinching umbilical cord, decreasing blood flow to the fetus. Therefore, a score of 0 points for amniotic fluid may ...
003921. [edit on Wikidata] Tubes filled with amniotic fluid for Amniocentesis. Amniocentesis is a medical procedure used primarily in the prenatal diagnosis of genetic conditions. [1] It has other uses such as in the assessment of infection and fetal lung maturity. [2] Prenatal diagnostic testing, which includes amniocentesis, is necessary to ...
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