Transpulmonary echocardiography to guide stent implantation into coarctation of the aorta.

Although stent implantation into aortic coarctation has been performed solely under fluoroscopy, we successfully applied intracardiac echocardiography to guide this procedure in a 13-year-old patient. Placing an intracardiac echocardiographic catheter in the left pulmonary artery facing upward, we readily visualized the precise anatomy of coarctation, measured the pressure gradient, and monitored the stent inflation process. This report suggests a new application of intracardiac echocardiography for intervention with structural and vascular diseases other than interatrial septum.