Figure 20. Frontal view of the chest shows a left jugular Swan-Ganz catheter (arrows), which passes through a persistent left superior vena cava into the coronary sinus, through the right atrium and right ventricle, and into the right pulmonary artery. Also seen are a subcutaneous port (P), an endotracheal tube (ET), an ECG lead (E), and a nasogastric tube (not labeled).