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Simulated waiting list prioritization for equitable allocation of donor lungs
J P Ouwens1, H Groen, E M TenVergert
1Office for Medical Technology Assessment, University Hospital Groningen, Groningen, The Netherlands. j.p.ouwens@mta.azg.nl
Summary
Prioritizing lung transplant candidates with higher death risks improves transplant equity. This diagnosis-dependent approach offers a fairer donor lung allocation system for all patients.
Area of Science:
- Transplantation immunology
- Medical informatics
- Public health
Background:
- Current lung transplantation (LTx) allocation relies on blood group, height, and waiting time.
- Long waiting times disadvantage patients with rapidly progressing lung diseases.
- A diagnosis-dependent prioritization system was investigated to equalize transplantation chances.
Purpose of the Study:
- To evaluate the impact of diagnosis-dependent prioritization on lung transplant waiting lists.
- To create a more equitable donor lung allocation system.
Main Methods:
- Calculated relative risks of death on the waiting list using 10 years of Dutch LTx program data.
- Developed a microsimulation model of the Dutch LTx program.
- Prioritized patients based on statistically significant increased risk of death while awaiting transplantation.
Main Results:
- Cystic fibrosis, primary pulmonary hypertension, and pulmonary fibrosis showed significantly increased risks of death on the waiting list.
- Prioritization increased transplantation chances for high-risk diagnoses and decreased them for others.
- The distribution of diagnoses post-LTx closely mirrored the waiting list distribution.
Conclusions:
- Simulated diagnosis-dependent prioritization promotes more equitable donor lung allocation.
- This prioritization method is clinically feasible with frequent waiting list updates.