The purpose of the clinical investigation is to support the use of direct procurement of donor hearts in donation after circulatory death followed by hypothermic oxygenated perfusion using the XVIVO Heart Assist Transport System. Thereby increasing the utilization of DCD donor hearts in donation after circulatory death. The primary objective is to evaluate patient survival after direct procurement and hypothermic oxygenated machine perfusion of DCD donor hearts using the XVIVO Heart Assist Transport System. The secondary objectives are to evaluate patient outcomes and graft function post-transplant.