Figure 031_3619. Transthoracic echocardiography (TTE) (4-chamber view): primum atrial septal defect (ASD). Discontinuity of the interatrial septum (arrow). LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle. - McMaster Textbook of Internal Medicine

Figure 031_3619.
Transthoracic echocardiography (TTE) (4-chamber view): primum atrial septal defect (ASD). Discontinuity of the interatrial septum (arrow). LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle.

Figure 031_3619. Transthoracic echocardiography (TTE) (4-chamber view): primum atrial septal defect (ASD). Discontinuity of the interatrial septum (arrow). LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle.