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However, in other cases, a circumvallate placenta is not identified until delivery of the baby. Circumvallate placenta can increase the risk of associated complications such as preterm delivery and placental abruption. Occasionally, a circumvallate placenta can also increase the risk of neonatal death and emergency caesarean section.
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Velamentous cord insertion is often diagnosed using an abdominal ultrasound. [3] [4] This is most successful in the second trimester, [13] however Color Doppler ultrasound [14] or transvaginal ultrasound [15] can be used in difficult cases, such as when the placenta is located
The anomaly scan, also sometimes called the anatomy scan, 20-week ultrasound, or level 2 ultrasound, evaluates anatomic structures of the fetus, placenta, and maternal pelvic organs. This scan is an important and common component of routine prenatal care . [ 1 ]
Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
Placenta praevia is when the placenta attaches inside the uterus but in a position near or over the cervical opening. [1] Symptoms include vaginal bleeding in the second half of pregnancy . [ 1 ] The bleeding is bright red and tends not to be associated with pain. [ 1 ]
The onset of the disease within the first trimester leads to preterm delivery of a premature baby. [14] Preeclampsia is diagnosed in 3-5% of pregnancies that place them at risk of developing placental disease. [6] Ischemic placental disease is linked with approximately more than half of premature births. [4]
Circumvallate placenta A circumvallate placenta refers to when the foetal membrane wraps twice around, over the foetal side around the edge of the placenta . This is to compensate for an undersized chorionic plate resulting in a decreased nutritional supply to the foetus.