Over time, pulmonary hypertension can develop causing ... septal defects while looking from the right atrium. 1 = Upper sinus venosus defect 2 = Lower sinus venosus defect 3 = Ostium secundum ...

This rarely develops into Eisenmenger’s syndrome if pulmonary hypertension develops ... while looking from the right atrium. 1 = Upper sinus venosus defect 2 = Lower sinus venosus defect 3 ...