Rastelli Classification of Complete AVSD #2: Rastelli Type B

👉Type B is rare (~5%), with the superior bridging leaflet crossing the ventricular septum before dividing on the RV side.

👉Because division occurs on the RV side, the antero-superior leaflet is smaller than in Rastelli Type A.

👉An abnormal papillary muscle may lie near the division, producing a characteristic “floating” superior bridging leaflet pattern.