Echocardiography: Gold standard
CXR: shows the classic “boot-shaped” heart
Decreased pulmonary vascularity (due to pulmonic stenosis)
Decreased pulmonary vascularity (due to pulmonic stenosis)
Tetralogy of Fallot
Seizure
Transposition of the great arteries
Breath-holding spell
Ebstein anomaly
Hyperventilation syndrome
Tricuspid atresia
Pregnancy 