1A1V (Single Umbilical Artery)

Single umbilical artery affects approximately 1 out of 100 live births and is the most common defect of the umbilical cord. A typical umbilical cord has two arteries and one vein.

When one artery stops growing or when the primoridial umbilical artery does split, simgle umbilical artery can occur. One artery is capable of supporting a pregnancy to term, so the disorder does not pose a threat directly to your developing baby. However, there are other birth defects that your child may be more likely to inherit because of the single umbilical artery.

Approximately 25% of babies that have single umbilical artery will have other abnormalities. These can include heart defects, gastrointestinal abnormalities, central nervous system complications, urinary tract complications and trisomy 13 or 18.

Healthcare providers can diagnose the condition after an ultrasound examination shows one artery that is large with only two vessels visible.

Comments: 1A1V-(Single-Umbilical-Artery)

Comments 26 to 49 of about 110.
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d2l4lt - 213 days ago.
Well I had my docters appointment on Monday. Baby was doing fine and all was normal. I went for my level 2 ultrasound and he still has a single umbilical cord and you could see a very small white spot on his heart. Docter told me not to worry that all was good and he wouldn't be checking for it anymore. He didn't ask if I wanted any genetic counseling or an amnio. I'm going to request an amnio just to be sure. I love my child already but I just want to make sure he is ok. Everything is measuring on time but that doesn't really say anything. He's very active and has no other problems. Well I'll keep everyone informed about my little man and please keep me informed.

tinyalves - 218 days ago.
i was diagnosed with a sua im getting a level 2 us on the 2oth does anyone else have this problem?

courtenay - 222 days ago.
emma, they run blood work and tests on all newborns, i dont think journey had any extra tests however she did have an extra hearing test since they lost the results of the first one (she passed both) and she did get an ultrasound on her kidneys a week after she was born just to make sure everything was fine and it was.

emma32uk - 222 days ago.
hello ladies, i have 7 weeks to go and so far all my scans have been positive as far as not finding any abnormalities with my baby. i have one more scan due at 36 weeks amd am now just counting down the days now till i can hold my little girl. anyway, i didnt have an amnio when it was offered at 26 weeks and was just wondering if they did any tests to the baby after the baby is born, just to make sure?? or do they just do the normal tests that they do on all newborns??

courtenay - 225 days ago.
Grandma Bee, as long as they can see two kidneys in the ultrasounds now there shouldnt be any further problems. my daughters kidneys were checked every ultrasound when i was preg with her and a week after she was born she had the follow up ultrasoundon her kidneys and everything was perfect as expected. kidney and urinary problems are the most common complication with SUA since the cord deals with the removal of waste from the baby and thats what we are missing; one of the waste cords. good luck to all of you.

azmom - 227 days ago.
Hello ladies- I am happy to say, after two weeks of crying and not sleeping, I finally have peace. I have heard from two specialists and my personal doctor, whom I trust fully, SUA is “a variation of normal”, and unless my baby showed OTHER signs of abnormalities not to worry. I have a big 1lb5oz 25week old baby that moves all over and is growing at a perfect rate. She will still take all the necessary preemptive testing and I will be monitored in the end, but she says all SUAs are treated this way. I will have two more growth scans, one at 28 and one at 32. I will have stress tests twice a week starting at 36 weeks. I am a fairly intelligent person, but is seems that even with all the “right” data sitting in front of you all you can do is get scared and read the bad. All of the studies on the internet of things being wrong, hugely were studies of babies born with other abnormalities and the SUA was found. I trust that this is JUST how my umbilical cord formed, and my baby is growing and thriving. Don’t get me wrong…I am doing all other things to ensure a healthy pregnancy. I am watching my weight gain. I am resting as much as possible and I started working to increase my oxygenation. I take water aerobics twice a week and yoga once a week. I can control how I feel about all of this – and my emotions drive my baby’s emotions, too. So keep positive, take care of yourselves and don’t worry. Unless there is something else visible at this time, I truly believe our healthy pregnancies are fine. I will keep you posted on my exams and scans. Let’s get through this together. AZMom Mom to 4yo baby boy and 2yo baby girl Soon to be mom to JulyBaby

kittydisney - 229 days ago.
I found out last friday that my baby has 1A1V. My baby girl is measuring 2 days smaller than she should, I am having an ultrasound to look at her heart on the 29th. I also have a blood clotting disorder that causes my body to reject the pregnancy so I have to give myself shots of Heparin (blood thinner). And to add on to that I was diabetic before I got pregnant so I also take 3 shots of insulin a day making it 5 shots a day. The doc says the blood disorder has nothing to do with 1A1V. I have lost two pregnanies early before now and this is the furthest I have ever made it in a pregnancy (20 weeks) I am trying to say positive, I am not researching any of this on the internet, I am so thankful to you ladies that have posted your sucess stories on here. Thank you, thank you thank you... It has helped me stay positive through the stress of all the tests...

courtenay - 230 days ago.
i was also in this position a year ago and found alot of support here. my daughter is almost 6 months now and healthy and perfect. there were no complications because of the sua.

isla77 - 233 days ago.
Hello Ladies Well....I was in your position last year...and I did a lot of worrying and crying when I read the internet.....My daughter is now 11 weeks...15lbs and two feet tall...she has no issues!!!! She laughs and talks (baby talk) ....she is alert and very active...she was born 8lbs 13oz at 39 weeks....my OBGYN was excellent and she said she was more concerned over my BP than SUA.....if your U/S is ok......your baby will be fine...Please try and enjoy the pregnancy...I wish I would have....

d2l4lt - 238 days ago.
I'm 22 weeks and about 3 weeks ago I found out I have SUA. The docter called me at work and I felt so sad. Of course got on the internet because I wanted to know how this would effect me and the baby. The docter said that the results for birth defect was good and I shouldn't worry. She just wanted more ultrasounds to see how baby was growing. Everything on the internet is negative and I worry everyday that my son will be born with some complications. He kicks like crazy and was bigger than expected at my ultrasound. I'm praying all will be well but I can't stop thinking my son will have some birth defect. I pray everyday. I hope to hear from others about this.

AzMom - 241 days ago.
Hello there- I am 23 weeks pg with #3. Today I learned about my SUA. At first I sobbed, because my nurse said the best info should come from the perineonatal specialist. Luckily, I have a great relationship with this office, and they got me in tomorrow am. ...so one, I am scared and working towards being optimistic. two...sick baby or healthy baby, i want to do what is best. Moms...did you treat your pregnancy any different? For thoese with early babies, did you get induced or did it happen naturally? I ready pic and epis are dangerous? Feedback? This is just the begining of my questions, but your help will be greatly appreciated.

Katelyns Mom - 246 days ago.
I haven't left a message in this section for a while. Just wanted to let everyone know that Katelyn was born on March 14, 2009, 7 1/2 weeks premature. She is in the NICU for about a month, but she is doing beautifully. She is exceeding all of the doctors expectations. They say babies with SUA (1A1V) tend to be on the small side. She was born at 32 weeks 4 days gestation and weighed in at 4 lbs. 1 oz. The doctors say that her size is amazing for her age and it has given her a real advantage. So for all those women out there who read everything online and worry needlessly, try not to. Taking good care of yourself is the most important thing. Even babies born very early like Katelyn can defy all the odds so have faith in yourselves and believe that your babies can be healthy too. I have uploaded new pictures on my profile.

courtenay - 271 days ago.
well i went and weighed journey again today, she is up 1lb 1oz from last monday, bringing her to 10lbs 11oz which is a great gain for one week. if she keeps gaining like this she will be where she is supposed to be in a couple weeks. im just glad she isnt starving anymore.

pintpot - 272 days ago.
Courtenay and Isla glad your princesses are doing well, Ryan is 11 weeks now we're getting him weighed tomorrow but 2 weeks ago he was 11lb 5oz's I'm expecting him to be over the 12lb more this time. Ryan still doesn't ahve a schedule either and has regressed to eating 4oz's every 2-4 hours, he was eating 5oz's every 4 hours, he can be so frusrating at times but I guess that comes as the motherhood package. Hope eveyone else is doing well. x

isla77 - 275 days ago.
Hi Courtney Sorry...I haven't been on this site for a while...things are going well....still trying to keep up with her feedings!!!!....we still have no schedule...I do what she wants!!!! Well...she's almost 6 weeks and yesterday she weighed in at 12 lbs 1 oz!!!! so I guess her feedings are going better than I expected.....I still have to supplement sometimes...when she gets ravenous!!!! Sometime she sleeps through the night and sometimes she's up every three hours....Glad to hear Journey is doing well....hope everyone else is doing well....

courtenay - 278 days ago.
well yeah i was way off on the weight, actually she lost weight since her shots :( so now i am on a prescription to help with my milk supply which is already working thankfully.

courtenay - 280 days ago.
we are going for our 4 month check up tomorrow, i am anxious to see how much shes weighin in at now, i know shes about 13.5lbs cuz i weighed her on my own scale lol. shes also grown almost 4 inches since birth!

courtenay - 289 days ago.
isla, i started feeding her rice cereal once a day now taht she is basically 4 months (shes almost 17 weeks but wont be technically 4 months until next week). i wanted to wait much longer but shes such a hungry baby, shes oding great with it though and still constantly at the boob lol

isla77 - 290 days ago.
Isla is doing great....I can't keep her fed...and she's pretty much on her own schedule...hope everyone else is doing well!!!!

courtenay - 295 days ago.
hows everyone doin in here? havent seen anything for awhile. journey will be 4 months on feb 13, needs to get her hips x-rayed because of her breech position and large size lol. going for her 4 month check in a couple of weeks and getting ready to go to florida. we cant wait!

courtenay - 305 days ago.
emma, i answered on your page!

emma32uk - 305 days ago.
can anyone tell me what stress tests are???

courtenay - 311 days ago.
congratulations isla!! my daughter was 8lbs 13oz as well lol so i hear ya about the 'small' babies. good work honey!

isla77 - 312 days ago.
Hi Ladies Isla Elizabeth was born Jan 11th, 2009 weighing 8lbs 13 oz.....she is perfectly healthy except for a little bit of Jaundice!!!!!! I asked the delivery DR at the hospital if he had seen this a lot...he told me he hasn't seen a baby born with this that has had any serious problems...usually just a little small....so maybe they should change the books and internet!!!!! Good luck to everyone else waiting for their angels!!!!

amybunting - 319 days ago.
Hey ladies. I am new to this message board, but not to the site. In fall 2007 my 20 week ultrasound showed that my son had an SUA. My husband and I were told so many scary things (it is likely that your child may have Downs Syndrome and even a chromosomal issue non-compatable with life...)and given so many statistics (your chid has gone from the 15th percentile to the 35th in weight, but his head is measuring on the large side which could mean downs...) that we didn't really know what to think. After 15 ultrasounds, visits to specialists, countless NSTs, and a day and a half of labor - our son was born a 'hearty' 7.5 lbs. (which was NEVER apparent in our ultrasounds...they were way off!) and healthy as can be!! He is now a perfect 9 month baby boy...I was a person who really enjoyed seeing success stories when I looked for ANY information on my unborn child's 'condition'...so hopefully this can be (at least a momentary) help to bring peace of mind to any moms who are struggling with this crazy Single Umbilical Artery journey!