Diagnosis typically involves a combination of clinical evaluation and imaging studies. A pediatric cardiologist may perform a physical examination and listen for a heart murmur. Diagnostic tests may include:
Echocardiogram: An ultrasound of the heart that can visualize the narrowing and assess its severity. Electrocardiogram (ECG): To check for signs of left ventricular hypertrophy. Magnetic Resonance Imaging (MRI): Provides detailed images of the heart and blood vessels. Cardiac catheterization: A procedure that involves threading a catheter through the blood vessels to measure pressures and take images of the heart and aorta.
