The present Review will focus only on the so-called classic presentation of ToF without coexisting intracardiac defects ... with residual lesions (shunt or pulmonary artery stenosis).

TTE, done with a saline bubble test, can be useful in diagnosing a clinically relevant intracardiac shunt through a patent foramen ovale (PFO), at rest and after Valsalva maneuver. The contrast ...