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The International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) recommends that pregnant women have routine obstetric ultrasounds between 18 weeks' and 22 weeks' gestational age (the anatomy scan) in order to confirm pregnancy dating, to measure the fetus so that growth abnormalities can be recognized quickly later in pregnancy ...
Late onset congenital adrenal hyperplasia. Late onset congenital adrenal hyperplasia (LOCAH), also known as nonclassic congenital adrenal hyperplasia (NCCAH or NCAH), is a milder form of congenital adrenal hyperplasia (CAH), [ 1] a group of autosomal recessive disorders characterized by impaired cortisol synthesis that leads to variable degrees ...
A blighted ovum is a pregnancy in which the embryo never develops or develops and is reabsorbed. [ 1] In a normal pregnancy, an embryo would be visible on an ultrasound by six weeks after the woman's last menstrual period. [ 2] Anembryonic gestation is one of the causes of miscarriage of a pregnancy and accounts for roughly half of first ...
0.1%-1.8% of pregnancies [ 6] Velamentous cord insertion is a complication of pregnancy where the umbilical cord is inserted in the fetal membranes. It is a major cause of antepartum hemorrhage that leads to loss of fetal blood and associated with high perinatal mortality. In normal pregnancies, the umbilical cord inserts into the middle of the ...
Nuchal cord. A nuchal cord is when the umbilical cord becomes wrapped around the fetus 's neck. [ 1] Symptoms present in the baby shortly after birth from a prior nuchal cord may include duskiness of face, facial petechia, and bleeding in the whites of the eye. [ 1] Complications can include meconium, respiratory distress, anemia, and ...
Circumvallate placenta is a placental morphological abnormality associated with increased fetal morbidity and mortality due to the restricted availability of nutrients and oxygen to the developing fetus . Physicians may be able to detect a circumvallate placenta during pregnancy by using an ultrasound.
The gold standard for diagnosing a heterotopic pregnancy is the transvaginal ultrasound. However, the sensitivity of the transvaginal ultrasound for diagnosing a heterotopic pregnancy has been found to range from 26.3% to 92.4%. [5] Therefore, both clinical symptoms and ultrasound imaging are used to make the diagnosis.
Unlike hemolytic disease of the fetus and newborn, NAIT occurs during the first pregnancy in up to 50% of cases, [1] and the affected fetuses may develop severe thrombocytopenia (<50,000 μL −1) very early during pregnancy (as early as 20 weeks gestation, consistent with the development of platelet antigens, [1] and the majority of the time ...