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If you are at risk for having a baby with a genetic defect or blood disorder, your doctor may recommend percutaneous umbilical cord blood sampling (PUBS), which is performed at 18 weeks' gestation.
During the procedure, the doctor draws a sample of the fetus' blood directly from the umbilical cord. The sample is then analyzed for genetic defects and other health conditions.
This procedure can also be used to check if your baby has anemia. If your baby has severe anemia, your health care provider can immediately give your baby a blood transfusion.
Procedure, part 1Guided by ultrasound, your doctor pinpoints the spot where the umbilical cord meets the placenta. He then inserts a needle through your abdomen and uterus and into the umbilical cord and withdraws a small amount of fetal blood.
Procedure, part 2There are two routes for retrieving fetal blood: Placing the needle through the placenta or through the amniotic sac. The placenta's position in the uterus and the spot where it connects to the umbilical cord determine which method your doctor uses.
If the placenta is attached toward the front of the uterus (placenta anterior), he inserts the needle directly into the umbilical cord without passing through the amniotic sac. The amniotic sac, or "bag of waters," is the fluid-filled structure that cushions and protects the developing fetus.
If the placenta is attached toward the back of the uterus (placenta posterior), the needle must pass through the amniotic sac to reach the umbilical cord. This may cause some temporary bleeding and cramping.
You should receive Rh immune globulin (RHIG) at the time of PUBS if you are an Rh-negative unsensitized patient.
ResultsAfter the blood sample is drawn, it's sent to a laboratory where a technician tests the blood for genetic defects and other disorders. In most cases, the results are ready within a few weeks. Your doctor will explain the results to you and, if a problem is diagnosed, give you information about ending the pregnancy or how best to care for your baby after birth.
Reviewed ByReview Date: 02/24/2007
Douglas A. Levine, MD, Gynecology Service, Memorial Sloan-Kettering Cancer Center, New York, NY. Review provided by VeriMed Healthcare Network.
What else can I help you with?
What is pub test?
A PUBS test is a diagnostic test that examines blood from the fetus to detect fetal abnormalities. PUBS stands for Percutaneous Umbilical Cord Blood Sampling.
What can pubs testing be used for?
Percutaneous Umbilical Blood Sampling (PUBS) is a diagnostic test that examines blood from the umbilical cord to detect fetal abnormalities. It is different from amniocentesis in that it cannot determine neural tube defects. PUBS is done at or after 18 weeks and is used secondary to amniocentesis.
What is a OB Test at the doctors?
OB stands for OBSTETRICS, so when we say OB test, there are several obstetrics tests, these tests are done to detect a high-risk pregancy. Obstetrics Tests are Ultrasound, Fetal echocardiogram, Amniocentesis, Chorionic Villi Sampling, Intrauterine Procedures, Fetal Doppler, Percutaneous Umbilical Blood Sampling, etc.
What is the tube which attaches the embryo to the placenta called?
The umbilical cord. The umbilical cord has the function of sending blood to the baby and returning blood from the baby after it has been utilized. There are two arteries in the umbilical cord that do this.
Does baby get blood from mother?
The umbilical cord supplies blood to the baby. The umbilical cord is connected to the placenta and the mother's blood comes via the placenta through the umbilical cord to the baby. The baby receives oxygenated and nutrient rich blood via the umbilical cord.and de-oxygenated and nutrient depleted blood returns to the mother via the umbilical cord.
Does an umbilical artery carry oxygen?
No, Umbilical arteries take deoxygenated blood from the fetus to the placenta, it is the umbilical vein carries the oxygenated blood from the placenta to the futus.
Is the oxygenated blood found in the umbilical vein or in the umbilical arteries?
arteries
Which blood vessel contains blood with the highest oxygen level?
Umbilical Vein, all other vessels have varying degrees of oxygenated and deoxygenated blood.
What is a umbilical vein?
An umbilical vein is one of the blood vessels contained in the umbilical cord. It contributes to fetal circulation.
What are the vessels in the umbilical cord of a pig?
The umbilical cord of a pig contains three primary blood vessels: two umbilical arteries and one umbilical vein. The umbilical arteries carry deoxygenated blood from the fetus to the placenta, while the umbilical vein transports oxygenated blood from the placenta back to the fetus. This vascular structure is crucial for nutrient and gas exchange during fetal development.
How do they store umbilical cord blood and how long is it good for?
Storing umbilical cord blood is called cord blood banking. This process includes collection of the blood, processing, and storing the blood frozen to be used in the future. By using this method, umbilical cord blood is supposed to remain good indefinitely.
What are the fetal arteries?
right and left umbilical arteries carry oxygenated blood. left umbilical vein carries oxygenated blood to the fetus. both these vessels are present in the umbilical cord.
