Hypoplastic Left Heart Syndrome

Diagnosis

Hypoplastic left heart syndrome is usually diagnosed with an echocardiogram (ultrasound of the heart). Other tests may include:

• An electrocardiogram (ECG), which shows right ventricular hypertrophy (enlargement of the right ventricle of the heart)
• An X-ray of the chest to look for heart enlargement.
• A cardiac catheterization (injection of a special dye into the heart to show how the heart is functioning) may be used in a very few cases.