Figure 3: Demonstrating the CARTUNIVU™ modality wherein the image created using the CARTO™ was integrated onto the fluoroscopic screen. Each panel shows the location of the heart chambers on the left screen and final lead positions on the right. Panels A-D show RAO 30o, AP, RAO 50o and LAO 30o views, respectively. Note the perpendicular orientation of the His bundle lead and RV lead implant towards the interventricular septum, and atrial lead in right atrial appendage. AP = antero-posterior, RAO = right anterior oblique, LAO = left anterior oblique, TA = tricuspid annulus (white outline), CS = coronary sinus, HB = His bundle RA = right atrium, RAA = right atrial appendage, RV = right ventricle, RVOT = right ventricular outflow tract, IVS = interventricular septum (blue dashed line), IVC = inferior vena cava, SVC = superior vena cava.