What Is TGA?
Transposition of the Great Arteries (TGA) is a heart defect present at birth. In this condition, the two main arteries leaving the heart are switched. This mix-up affects how blood flows to the lungs and the rest of the body.
Oxygen-poor blood gets sent to the body instead of the lungs. This is a cyanotic heart disease, and babies often appear blue at birth.
How TGA Affects the Heart
The two arteries involved are:
- The pulmonary artery (sends blood to the lungs)
- The aorta (sends blood to the body)
In a healthy heart, these vessels are crossed. In TGA, they run straight. This mistake blocks oxygen from reaching the body.
This is a type of congenital heart defect, and it shows right away in most babies.
Symptoms of TGA
Signs usually appear shortly after birth.
Common symptoms:
If untreated, oxygen stays low. That can lead to congenital heart failure.
What Causes TGA?
Doctors aren’t sure why this defect happens. It develops in the womb. Some cases may be linked to genes or other birth defects. There is no known way to stop it before birth.
How It’s Diagnosed
Transposition of the Great Arteries (TGA)Transposition of the Great Arteries (TGA)Transposition Transposition of the Great Arteries (TGA) is often found within hours or days of birth. Signs like blue skin or weak feeding lead to tests.
Common tests include:
The echocardiogram shows how blood is flowing and where the arteries are placed.
This is where BaleDoneen can help.
We support children and families with heart defects. Our team provides long-term monitoring and care after surgery to help lower future risk. We stay with patients as they grow into adult care and help them to prevent heart attack.
Types of Transposition of the Great Arteries (TGA)
There are two types:
- D-TGA (the most common form)
- L-TGA (also called levo-transposition, which is less common)
D-TGA shows symptoms at birth.
L-TGA may not show signs until later in life.
Treatment for TGA
Transposition of the great arteries treatment starts with surgery. This is the only way to fix the blood flow.
Surgery includes:
TGA heart surgery is done early—often in the first few weeks of life.
Recovery and Life Expectancy
After surgery, most babies do well. They need regular care to check heart rhythm, valve function, and blood flow.
Fontan procedure recovery is not part of Transposition of the Great Arteries (TGA), but other heart defects may need long-term care.
TGA heart defect life expectancy is good with surgery and regular follow-up. Many children live full lives.
Pediatric heart surgery recovery depends on the baby’s health, but most babies return home in 1–2 weeks.