Video 26.9 Moderate to severe subvalvar pulmonary (left ventricular outflow tract) obstruction in a 27-year-old man - color Doppler.
Moderate to severe subvalvar pulmonary (left ventricular outflow tract) obstruction in a 27-year-old man with situs solitus and levocardia. Flow acceleration originates in the subvalvar area of the left ventricular outflow tract as shown by color Doppler.