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what does it mean when the cord only has 2 strands instead of 3 and the baby is small
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784127 tn?1261404576
Hi,

Im 20 weeks pregnant with twins. They just found that twin B only has a single artery and one vein, instead of two arteries and one vein. I was told that 3/4 of babies with this coming out perfectly healthly. Its only a small chance that there will be a birth defect. If they didnt find any other abnormalities, especially in any major organs, then you are most likely in that 75%. Good luck.  
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377012 tn?1283965435
What is single umbilical artery?
About 1 percent of singleton and about 5 percent of multiple pregnancies (twins, triplets or more) have an umbilical cord that contains only two blood vessels, instead of the normal three. In these cases, one artery is missing (2). The cause of this abnormality, called single umbilical artery, is unknown.

Studies suggest that babies with single umbilical artery have an increased risk for birth defects, including heart, central nervous system and urinary-tract defects and chromosomal abnormalities (2, 3). A woman whose baby is diagnosed with single umbilical artery during a routine ultrasound may be offered certain prenatal tests to diagnose or rule out birth defects. These tests may include a detailed ultrasound, amniocentesis (to check for chromosomal abnormalities) and in some cases, echocardiography (a special type of ultrasound to evaluate the fetal heart). The provider also may recommend that the baby have an ultrasound after birth.


* this wasn't to scare you, but i just googled your info and this is what i came up with..hope it helps...and i wish you the best of luck!!!!!!!!!!! keep us posted on how everything is going, there is a great community here, who will help you along the way!!!!!!
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