Parasternal short-axis view in tetralogy of Fallot

This still frame from the accompanying echocardiographic video clip of the parasternal short-axis view of a patient with tetralogy of Fallot shows the boundaries of the VSD. The VSD extends from the membranous septum, beneath the tricuspid valve, and into the outlet septum. The CS is intact in the suprascristal region and anteriorly deviated, separating the defect from the RVOT. The video clip begins with these structures. The ultrasound transducer then sweeps apically through the ventricles, showing no other septal defects present in this patient.