ABSTRACT Background Percutaneous treatment for atrial septal defects is utilized worldwide as first-line therapy. Its use is restricted to atrial septal defects localized within the confines of the oval fossa. All other atrial septal communications are, traditionally, submitted to surgery. Sinus venosus atrial septal defect is the second most frequent type of atrial septal defects. The diameters are usually large and thus prone to right heart overload. Besides that, it is difficult to be diagnosed by transthoracic echocardiography, and often […]
