We. Katz et al., TRANSESOPHAGEAL ECHOCARDIOGRAPHIC IDENTIFICATION OF A MALPOSITIONED EXTRACORPOREAL MEMBRANE-OXYGENATION CANNULA, The Journal of heart and lung transplantation, 14(4), 1995, pp. 790-792
Transesophageal echocardiography identified malposition of an extracor
poreal membrane oxygenation venous cannula across the interatrial sept
um into the left atrium and the presence of a clot within the cannula'
s lumen. Transesophageal echocardiography also guided the withdrawal o
f the cannula into the inferior vena cava.