TWIN TO TWIN TRANSFUSION SYNDROME (TTTS)

Posted on February 7, 2017. Filed under: Uncategorized | Tags: , , , , , |

TTTS, if it is going to happen, only occurs with monozygotic (identical) multiples, including any monozygotics within triplets, quadruplets or quintuplets.  As soon as you are diagnosed with having multiples, parents need to find out if they are carrying monozygotic babies and if they have TTTS.

TTTS is a disease of the placenta found in monochorionic (MC) multiples when two or more babies share a placenta.  In short, the babies have an unbalanced flow of blood and nutrients between them through the blood vessels which connect the circulation of both babies.*  It is important to find out as soon as is possible if any of your babies share a placenta, thus putting them at risk for TTTS.  We do not know why TTTS occurs.  TTTS is all about the placenta and how it distributes blood through the umbilical cords to the babies.*

Here are some complications of TTTS:

-both babies are usually affected;                                                                                                               -ultrasound shows that the babies are growing at different rates;                                                 -babies they have difference sizes of umbilical cords;                                                                         -one baby (the donor) receives little blood supply inside the womb, while the other baby (the recipient) receives too much and is unable to adequately expel the excess fluid.  The donor, as a result, is unable to properly grow and develop with little blood supply, while the recipient has an overloaded cardiovascular system.  TTTS puts both babies at risk of organ failure for opposite reasons, i.e. one has too little blood supply and the other too much.                                                                                                                                                                   -preterm labour is a risk, as is the death of one or both babies either in the womb, at birth or shortly after birth.

If your babies are diagnosed with TTTS you can expect to be considered High Risk and babies and Mother are monitored closely until birth.

For more detailed information on TTTS, check out Multiple Births Canada’s Web Site at http://www.multiplebirthscanada.org and their Fact Sheet on TTTS.

*Multiple Births Canada’s Fact Sheet, Monochorionic Multiple Pregnancy and Twin-to-Twin-Transfusion Syndrome

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