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  2. Single umbilical artery - Wikipedia

    en.wikipedia.org/wiki/Single_umbilical_artery

    Occasionally, during pregnancy, there is a single umbilical artery (SUA) present in the umbilical cord, as opposed to the usual two. [1] This is sometimes also called a two-vessel umbilical cord, or two-vessel cord. Approximately, this affects between 1 in 100 and 1 in 500 pregnancies, making it the most common umbilical abnormality.

  3. Velamentous cord insertion - Wikipedia

    en.wikipedia.org/wiki/Velamentous_cord_insertion

    In velamentous cord insertion, the vessels of the umbilical cord are improperly inserted in the chorioamniotic membrane, and hence the vessels traverse between the amnion and the chorion towards the placenta. [1] [11] Without Wharton's jelly protecting the vessels, the exposed vessels are susceptible to compression and rupture. [1] [9]

  4. Umbilical cord - Wikipedia

    en.wikipedia.org/wiki/Umbilical_cord

    Occasionally, only two vessels (one vein and one artery) are present in the umbilical cord. This is sometimes related to fetal abnormalities, but it may also occur without accompanying problems. It is unusual for a vein to carry oxygenated blood and for arteries to carry deoxygenated blood (the only other examples being the pulmonary veins and ...

  5. Percutaneous umbilical cord blood sampling - Wikipedia

    en.wikipedia.org/wiki/Percutaneous_umbilical...

    Percutaneous umbilical cord blood sampling (PUBS), also called cordocentesis, fetal blood sampling, or umbilical vein sampling is a diagnostic genetic test that examines blood from the fetal umbilical cord to detect fetal abnormalities. [1] Fetal and maternal blood supply are typically connected in utero with one vein and two arteries to the fetus.

  6. Umbilical artery - Wikipedia

    en.wikipedia.org/wiki/Umbilical_artery

    The umbilical arteries are actually the anterior division of the internal iliac arteries, and retain part of this function after birth. [3] The umbilical arteries are one of two arteries in the human body, that carry deoxygenated blood, the other being the pulmonary arteries. The pressure inside the umbilical artery is approximately 50 mmHg. [4 ...

  7. Umbilical cord prolapse - Wikipedia

    en.wikipedia.org/wiki/Umbilical_cord_prolapse

    Umbilical cord prolapse is when the umbilical cord comes out of the uterus with or before the presenting part of the baby. [2] The concern with cord prolapse is that pressure on the cord from the baby will compromise blood flow to the baby. [2] It usually occurs during labor but can occur anytime after the rupture of membranes. [1] [5]

  8. Circumvallate placenta - Wikipedia

    en.wikipedia.org/wiki/Circumvallate_placenta

    The newborn, with normal APGAR scores and umbilical cord arterial pH levels, was admitted to the neonatal intensive care unit. Upon examining the placenta after delivery, it was noted that the placenta demonstrated the appearance of a circumvallate placenta, and also showed evidence of abnormal umbilical cord insertion into the placenta.

  9. Vasa praevia - Wikipedia

    en.wikipedia.org/wiki/Vasa_praevia

    Vasa praevia is a condition in which fetal blood vessels cross or run near the internal opening of the uterus. These vessels are at risk of rupture when the supporting membranes rupture, as they are unsupported by the umbilical cord or placental tissue. Risk factors include low-lying placenta, in vitro fertilization. [1]

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