Related Experiment Video
Updated: Dec 21, 2025

A High-Fidelity Porcine Model of Orthotopic Heart Transplantation Following Donation after Circulatory Death
Published on: June 6, 2025
Balancing supply and demand: Review of the 2018 donor heart allocation policy
Lauren J Taylor1, Amy G Fiedler1
1Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin, Madison, Wisconsin.
Insights
A new heart transplant allocation policy was introduced in 2018 to better match donor hearts with critically ill patients. This policy aims for fairer organ distribution, considering patient health and location.
Area of Science:
- Cardiology
- Transplantation Medicine
- Public Health Policy
Background:
- Heart transplantation is the primary treatment for end-stage heart failure.
- Mechanical circulatory support devices have altered the patient demographic awaiting transplants.
- Existing organ allocation policies struggled with accurate patient acuity assessment and equitable geographic distribution.
Purpose of the Study:
- To evaluate the impact of the new United Network for Organ Sharing (UNOS) donor heart allocation policy implemented in 2018.
- To assess the policy's effectiveness in addressing patient acuity and geographic disparities.
- To understand the policy's role in accommodating demographic shifts in transplant candidates.
Main Methods:
- Analysis of the new UNOS donor heart allocation policy criteria introduced in 2018.
- Review of policy components addressing patient acuity, marginalized populations, and geographic factors.
- Comparative assessment of pre- and post-policy allocation considerations.
Main Results:
- The new policy establishes more precise criteria for listing candidates based on medical urgency.
- It incorporates considerations for previously underserved or marginalized patient groups.
- The policy includes measures designed to mitigate geographic inequalities in organ access.
Conclusions:
- The 2018 UNOS donor heart allocation policy represents a significant update to improve fairness and accuracy.
- It aims to optimize organ utilization by better reflecting patient need and addressing systemic disparities.
- The policy is a crucial step in managing a growing waitlist and evolving patient population for heart transplantation.
Abstract:
Heart transplant remains the most effective treatment for patients with end stage heart failure. Advances in mechanical circulatory support devices have changed the therapeutic landscape and contributed to a demographic shift in patients awaiting transplant. In the setting of a growing waitlist and concern for an inability of current policies to accurately account for patient acuity and equitable geographic distribution of organs, the United Network for Organ Sharing developed a new donor heart allocation policy which was introduced in 2018. The new policy creates more precise listing criteria to reflect patient acuity, addresses previously marginalized groups, and takes steps to address geographic inequalities.
Related Concept Videos
Kidney Transplant I: Introduction
Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...

