Twin to twin transfusion syndrome (TTTS) is a rare but serious condition that can happen during pregnancy with identical twins. In TTTS, blood flows unevenly between the twins through shared blood vessels in the placenta. As a result, one twin gets too much blood, while the other gets too little. This can cause health risks for both babies. Early diagnosis and treatment are important for the best outcomes. In this blog, you will learn about the causes, symptoms, diagnosis, and treatment options for twin to twin transfusion syndrome.
What is Twin to Twin Transfusion Syndrome?
TTTS is a problem that affects identical twins who share a single placenta. This type of pregnancy is called monochorionic. Because the twins share blood vessels, blood can flow unevenly between them. One twin, called the donor, gives away too much blood. The other, called the recipient, receives too much. This imbalance can lead to health issues for both babies. According to the CDC, TTTS affects about 10-15% of monochorionic twin pregnancies.
Causes of Twin to Twin Transfusion Syndrome
TTTS happens only in pregnancies where twins share a placenta. The main cause is the presence of abnormal blood vessel connections in the placenta. These connections allow blood to move from one twin to the other. However, doctors do not know exactly why these abnormal vessels form. Some possible causes include:
Even though TTTS is not caused by anything the parents did, knowing the risks of TTTS can help families prepare.
Symptoms and Warning Signs
TTTS symptoms can be hard to spot without medical tests. Still, there are some warning signs that parents and doctors can watch for. Early detection is key. Some symptoms and signs include:
Doctors may also notice differences in the size of the twins or the amount of amniotic fluid around each baby during an ultrasound. If you notice any of these TTTS symptoms, contact your doctor right away.
How is TTTS Diagnosed?
Doctors use ultrasound to diagnose twin to twin transfusion syndrome in pregnancy. During these scans, they look for:
In the US, regular ultrasounds are part of prenatal care for twin pregnancies. Early and frequent checks help spot TTTS before it becomes severe. Sometimes, doctors may use other tests to check the babies’ health.
Treatment Options for TTTS
There are several TTTS treatment options, depending on how severe the condition is. Early treatment can improve outcomes for both babies. Some common treatments include:
Your doctor will discuss the best TTTS treatment options for your situation. According to the WHO, laser surgery is often the most effective treatment for severe TTTS.
Prevention and Lifestyle Guidance
Currently, there is no known way to prevent TTTS. However, you can take steps to support a healthy pregnancy:
While you cannot control the risks of TTTS, early detection and care can make a big difference.
Frequently Asked Questions (FAQ)
If you are expecting twins or have concerns about TTTS, consult a specialist at Dr. Prashant Shukla’s Clinic for personalized guidance.
