Evolving paradigms in mechanical circulatory support and heart transplantation

Advanced heart failure management is increasingly defined by the interactions between evolving donor utilization and preservation strategies, mechanical circulatory support (MCS) technologies, and organ allocation frameworks. Heart donation after circulatory death has significantly expanded transplant availability in recent years, while advances in allograft preservation and ex vivo perfusion continue to challenge traditional constraints on ischemic time and donor selection. At the same time, modern temporary MCS platforms have demonstrated the feasibility of more prolonged support, enabling greater utilization of direct bridge-to-transplant pathways within allocation systems that prioritize temporary over durable support. Meanwhile, improvements in durable left ventricular assist device (LVAD) technology have progressively shifted their utilization toward destination therapy. Amid this dynamic therapeutic landscape, we sought to review current trends in donor utilization, preservation, mechanical support, and organ allocation. In doing so, we also evaluate how their intersection is reshaping contemporary treatment algorithms, resource stewardship, and pathways toward definitive heart replacement therapy.