What Are Single Ventricle Defects?
Single ventricle defects are a group of heart problems present at birth. In these conditions, only one of the two heart pumping chambers works well. The heart may be missing one ventricle or have one that’s too small or weak.
This is a cyanotic heart defect. It affects how blood picks up oxygen in the lungs and sends it to the body.
Types of Single Ventricle Defects
There are several types. All limit how blood flows through the heart and lungs.
Types of single ventricle defects:
- Hypoplastic left heart
- Tricuspid atresia
- Double inlet left ventricle
- Unbalanced AV canal
These problems may first show up as a heart murmur in babies or low oxygen levels.
Causes and Signs
What causes single ventricle heart defects?
They happen during early heart development. The cause is not always known. Some are linked to genes or other birth conditions.
Common symptoms:
Doctors often run an echo test for congenital defects to check the heart.
What Is Fontan Procedure?
The Fontan procedure is a type of surgery. It helps blood reach the lungs without passing through a weak ventricle. It’s used for many kids born with a single ventricle heart defect.
This is usually the third step in treating single ventricle defects. It changes how blood moves through the heart and lungs, creating Fontan circulation — a setup where veins send blood to the lungs without needing a full heart pump.
This is where BaleDoneen can help.
If you or your child had surgery for Single Ventricle Defects, our team helps track risk. We guide care and follow-up, from childhood into adult life, using tests and plans that keep the heart strong and prevent heart attack.
Treatment Options
Single ventricle treatment includes:
Pediatric cardiology Fontan teams follow children through each phase.
Fontan Surgery Recovery and Life After
Fontan procedure recovery takes time. Most children spend days in the hospital. Full recovery can take weeks to months.
Living with Fontan procedure means regular checkups. Some children stay active and attend school. Others may have limits based on oxygen levels or heart strength.
Long-term, patients need:
Common risks include fluid buildup, liver issues, and fast heart rhythm.
Life Expectancy
Single ventricle defects life expectancy has improved with better care. Many children now live into adulthood. Lifespan depends on how well the heart works and how early care begins.