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Single Umbilical Artery and mom may have lupus

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Hi my Wife is 29 weeks pregnant w/ our daughter Kaitlyn. Kaitlyn has a Single Umbilical Artery and it is possible that my wife may have Lupus is there any corelation between the two? Also what are we able to do to minimize risk to mom and baby from this point on?

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replied June 13th, 2011
Pregnancy Answer A24044
Welcome to ehealthforum,
During a normal single pregnancy, the umbilical cord contains three blood vessels: two arteries and one vein. One umbilical artery is all that is needed to handle blood flow to the placenta, so the other artery is functionally redundant.
Sometimes (between 1% of singleton and 5% of multiple pregnancies) an umbilical cord may contain only two vessels, one artery and one vein which is called "Single Umbilical Artery." It is the most common umbilical malformation.
The cause of this abnormality is unknown. It is believed to be caused by atrophy of a previously normal artery, presence of the original artery of the body stalk, or agenesis of one of the umbilical arteries. If an ultrasound examination done shows that the baby appears to have no other abnormalities, the baby is likely to be born healthy without having any other problems. One artery is capable of supporting a pregnancy to term, so the disorder does not pose a threat directly to your developing baby. However, if there are other birth defects detected, then it is possible that your child may be more likely to inherit because of the single umbilical artery.
Some studies done suggest that as many as 25% of babies with single umbilical artery may have chromosomal or other abnormalities. If your baby is diagnosed with single umbilical artery during an ultrasound, your gynecologist might offer additional tests including additional ultrasounds or even amniocentesis.
Even if the baby appears to have no other abnormalities, you will probably only need to be monitored more closely during your pregnancy. While Single Umbilical Artery may not in itself cause other abnormalities, it is often a flag that other abnormalities are present. Fetal karyotyping should be considered, especially if any other anomalies are found during the ultrasound. Neonatal ultrasonography should be done to examine for renal anomalies if suspected.
Single umbilical artery in general can contribute to poor fetal growth, low birth weight, preterm delivery and stillbirth in few cases.
The various causes for this includes: Diabetes mellitus in mother, Increased incidence of placental anomalies, Intrauterine thrombosis of other umbilical artery, Maternal epilepsy, Toxemia of pregnancy, Twin gestation, Edward's syndrome.
Discuss about these with your gynecologist in your next visit. Hope this helps.
Take care.

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