To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video 5 Video of the mechanical mitral valve with vegetation moving to the left of it. To the right of the valve, the communication between the left atrium and LAA can be seen. View Video 5 at http://movie-usa.glencoesoftware.com/video/10.1530/ERP-17-0076/video-5. The clot thickens: an incompletely ligated left atrial appendage Merrill Thomas, Anna Grodzinsky, and Martin Zink 2018. 5:K41-K45 DOI: 10.1530/ERP-17-0076 Download Original Video