Prospective, randomized comparison of 3-dimensional computed tomography guidance versus TEE data for left atrial appendage occlusion (PRO3DLAAO).

Background: Preliminary data comparing 3-dimensional computed tomography (3D-CT) to transesophageal echocardiography (TEE) for left atrial appendage occlusion (LAAO) indicates that 3D-CT provides more accurate measurements and improves case planning. Therefore, we conducted a pilot study comparing 3D-CT to TEE in occluder selection accuracy and procedural efficiency.

Methods: From May 2016 to February 2017, 24 patients were prospectively randomized to undergo LAAO using either TEE or 3D-CT.