What phrase describes a congenital heart defect characterized by localized narrowing of the aorta?

The phrase that describes a congenital heart defect characterized by localized narrowing of the aorta is "coarctation of the aorta." This condition can lead to increased blood pressure before the narrowing and decreased blood flow beyond it, potentially resulting in various complications if not treated. It often presents in infancy or childhood and may require surgical intervention or other treatments to manage the symptoms and risks associated with it.