displacement of the septal and inferior leaflet downwards from the atrioventricular junction and toward the body of the right ventricle or the apex Some of these arrhythmias may be due to Wolff-Parkin...displacement of the septal and inferior leaflet downwards from the atrioventricular junction and toward the body of the right ventricle or the apex Some of these arrhythmias may be due to Wolff-Parkinson-White syndrome, since up to 20 percent of patients have one or more accessory pathways; the majority of these pathways are located around the orifice of the malformed tricuspid valve.