Table 1.
Type A the superior bridging leaflet is almost completely adherent to the left ventricle and is firmly attached on the ventricular septum by multiple chordal insertions |
Type B the superior bridging leaflet is attached over the ventricular septum by an anomalous papillary muscle of the right ventricle |
Type C the superior bridging leaflet is not attached to the ventricular septum (free-floating leaflet) |