Diagnostic Pitfall of Platypnea-Orthodeoxia Syndrome Caused by Atrial Septal Defect after Right Pneumonectomy

Figure 4

Transesophageal contrast echocardiogram: midesophageal aortic valve short axis view of atrial septal defect; inferior vena cava injection in the upright position with a massive right-left shunt. RA: right atrium, LA: left atrium.