Utilization of 3D Printed Heart Model to Tailor Patch During Surgical Ventricular Restoration

A patient with extremely low ejection fraction, pseudoaneurysm of the left ventricle free wall with a volume exceeding volume of the left ventricle, and secondary mitral regurgitation due to postinfarction papillary muscle dislocation was admitted to the hospital. Before the operation, based on CT scans, a 3D model of the left ventricle with an aneurysm was prepared using 3D printing technology. Then the aneurysmal part of the left ventricular wall was removed by cutting the 3D model at the level of its mouth. Using the 3D model, a Dacron patch was prepared with a length similar to the original aneurysm mouth and a width shortened by about 1 cm on both sides. The giant thrombus filling the aneurysm cavity was removed. The walls of the aneurysm were cut off from the left ventricle along the aneurysm mouth. The patch was sewn with 4-0 continuous sutures into the aneurysm opening. During suturing, the patch was narrowed considerably at the level of posteromedial papillary muscle to obtain approximation of the base of the papillary muscles and shift them towards the mitral valve.