Supplementary material:
Video 1: Transoesophageal Echocardiogram midesophageal right ventricle inflow-outflow view showing the accessory tricuspid valve leaflet originating from the subvalvular region of the septal tricuspid valve leaflet and its movement in the right ventricle and across the pulmonic valve into the right ventricle outflow tract
Video 2: Three-dimensional (3D) Transoesophageal echocardiogram midesophageal right ventricle inflow-outflow view showing the accessory tricuspid valve leaflet originating from the subvalvular region of the septal tricuspid valve leaflet.
Video 3: Three-dimensional (3D) Transoesophageal echocardiogram midesophageal right ventricle inflow-outflow view showing the accessory tricuspid valve leaflet originating from the subvalvular region of the septal tricuspid valve leaflet.