Figure 1.

Workflow for Intracardiac Echocardiography in Repaired Tetralogy of Fallot

(A) Views from the right atrium are used to create right ventricular geometry and mark the location of the tricuspid annulus. (B) The intracardiac echocardiography (ICE) catheter is advanced into the right ventricle (RV) with anterior tilt to create additional RV geometry and mark the defibrillator lead position. (C) The best view in our experience is with posterior tilt in the RV looking through the right ventricular outflow tract (RVOT) into the pulmonary artery. The location of the pulmonary annulus is marked. (D to F) The location and extent of the ventricular septal defect patch are defined by ICE, using small degrees of rotation and tilt to optimize the image. (G and H) Finally, the RVOT/transannular patch location is defined. Enlarged and annotated views are provided in Supplemental Figures 1 to 8 and Supplemental Video 1, Supplemental Video 2, Supplemental Video 3, Supplemental Video 4, Supplemental Video 5.