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Red Blood Cell Transfusion Prior to Lung Transplantation: Impact on Patient Outcomes.
ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs 2023 March 17
There is an established association between red blood cell (RBC) transfusion and increased mortality and morbidity in cardiac surgery; however, there is little data demonstrating the influence of blood transfusion while awaiting lung transplantation. Therefore, our study compared the impact of pretransplant RBC transfusion on patient survival and post-transplantation adverse events. Adult lung transplant patient data were extracted retrospectively using the United Network for Organ Sharing thoracic database. Patients were stratified into two groups based on pretransplant transfusion status. In total, 28,217 patients were analyzed in our study (transfused: n = 1,415 and not transfused: n = 26,802). There was an increasing trend in pretransplant transfusion rates from 2006 to 2020. Transfused patients had a higher incidence of adverse events post-transplantation, including dialysis, stroke, and acute organ rejection before discharge. Multivariable survival analysis found an increased mortality risk in patients who required pretransplant transfusion(s) compared to those who did not have a transfusion (hazard ratio [HR]: 1.27; 95% confidence interval [CI]: 1.17-1.41; p < 0.001). There was no significant difference in bronchiolitis obliterans syndrome development between groups (HR: 0.92; 95% CI: 0.82-1.04; p = 0.185). To conclude, our study provides data to suggest that RBC transfusion(s) before lung transplantation are associated with increased patient morbidity and mortality, but have no association with chronic graft rejection development.
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