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Top 11 Frequently Asked Questions About Twin-to-Twin Transfusion Syndrome

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Updated April 11, 2011

Twin-to-Twin Transfusion Sydrome is a disorder that impacts about ten percent of monozygotic (identical) twin pregnancies. Find more answers to Frequently Asked Questions About TTTS.

1. What is TTTS?

Twin-to-Twin Transfusion Syndrome is a disease of the placenta. During pregnancy, when a single placenta is shared by two twins, abnormal blood vessels may develop, essentially connecting the circulatory systems of the two individual babies...

2. Who gets TTTS?

TTTS occurs in one third of monochorionic monozygotic pregnancies...

3. Can fraternal twins get TTTS?

The easy answer is: No. Fraternal twins have separate placentas and do not share blood vessels, making it impossible for them to develop the abnormal connections that characterize TTTS. However...

4. Can triplets and other higher order multiples get TTTS?

Yes. Triplets, quadruplets and other higher order multiples can develop TTTS, if any two of the multiples are monozygotic (developing from a single egg) and share a placenta (indicating that they are monochorionic)...

5. What causes TTTS?

The causes of TTTS (Twin-to-Twin Transfusion Syndrome) are not exactly known, but one thing is certain: there is nothing you, as parents, did to create this condition...

6. How is TTTS diagnosed?

Ultrasound technology can be used to detect the development of TTTS (Twin-to-Twin Transfusion Syndrome) in a twin pregnancy...

7. What are the warning signs of TTTS?

The TTTS Foundation provides this list of potential indicators. It is important for both parents and medical caregivers to be aware of the signs. Evidence of symptoms may be manifested in the mother, or visible in ultrasound scans of the twin fetuses...

8. How is TTTS treated?

Once TTTS (Twin-to-Twin Transfusion Syndrome) is detected, the course of treatment will be determined by the stage of the disease and the timing of the pregnancy...

9. How does TTTS impact babies?

TTTS (Twin-to-Twin Transfusion Syndrome) is a disease of the placenta during pregnancy. It only affects fetuses in utero; once the babies are born, the symptoms of TTTS disappear because the babies' circulatory systems are no longer reliant on the placenta...

10. What should I ask my doctor about TTTS?

Any mother that is pregnant with twins should be aware of, and educated about TTTS, especially if she is having identical (monozygotic) twins. Here is a checklist of important questions that you should address with your doctor...

11. What can parents of TTTS twins do?

First, contact the TTTS Foundation for advice and support. It will be extremely reassuring to hear from families who have survived TTTS...

Were you impacted by TTTS?

Did your babies experience TTTS during pregnancy? Please write and share your story. Other families can benefit from the wisdom of your experience.

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