Perioperative imaging in hypoplastic left heart syndrome.

Hypoplastic left heart syndrome is a constellation of left-sided congenital heart defects that result in variable hypoplasia of the left ventricle, left ventricular outflow tract, and aorta. Perioperative imaging with echocardiography, cardiac magnetic resonance imaging, and cardiac catheterization is vital for diagnosis, surgical planning, prognosis, and postoperative management.