Most common ASD is ?
Ans. is 'c' i.e., Osteum secondum ASD can occur in any poion of atrial septum - Secundum Primum Sinus venosus Absent atrial septum (leads to single atrium) Ostium secondum defect Defect in region of fossa ovalis Most common form of ASD
Ostium primum
Patent foramen ovale
Ostium secondum
Sinus venosus