Fig. 4
From: The use of extracorporeal CO2 removal in acute respiratory failure
a Transthoracic echocardiography subcostal view showing the J-tip of the guidewire entering the inferior vena cava. b Transesophageal echocardiography bicaval view showing the guidewire passing through from the superior vena cava into the right atrium and entering into the inferior vena cava. RA right atrium, SVC superior vena cava, IVC inferior vena cava