Sunday, May 7, 2023: 5:17 PM - 5:32 PM
15 Minutes
Los Angeles Convention Center
Room: 408A
Objective: To compare the outcomes of patients receiving lungs transplanted after undergoing ex vivo lung perfusion (EVLP) versus those transplanted conventionally at a single-center with over 14 years of experience.
Methods: Patient data was abstracted from the Toronto Lung Transplant Database between Jan 01, 2008 – Jan 01, 2022. Patients were separated based on whether they received lungs which underwent EVLP or whether they were transplanted conventionally (controls). Patients were matched 1:1 based on medical diagnosis, recipient status, recipient sex, recipient age, BMI, donor age, and calendar year. The primary outcome of the study was the incidence of Primary Graft Dysfunction (PGD) Grade 3 at 72h, with secondary outcomes of post-transplant mechanical ventilation, post-transplant hospital length of stay, intensive care unit (ICU) length of stay, allograft survival analysis and CLAD-Free survival analysis.
Results: There were a total of 533 patients in the EVLP group and 1317 controls. 62.3% of donor lungs placed on EVLP were from Donation after Cardiac Death (DCD) donors vs. 37.3% in the matched control group (P < 0.001). Mean donor P/F ratio was significantly lower for lungs in the EVLP group vs. controls (368 mmHg ± 102 mmHg vs. 426 mmHg ± 86 mmHg, P < 0.001). There were no differences in the incidence of PGD Grade 3 at 72h between the EVLP group and non-EVLP group (12.3% vs. 12.9%, P = 0.23). Furthermore, there were no differences in post-transplant length of mechanical ventilation [2 days (IQR 1 – 4 days) vs. 1.7 days (IQR 1 - 4.1 days), P = 0.1806], post-transplant hospital length of stay [22 days (IQR 16 – 40 days) vs. 25 days (IQR 16 – 42.6 days), P = 0.1730], ICU length of stay [4 days (IQR 2 – 9 days) vs. 4 days (IQR 2 – 11 days), P = 0.3090]. There were no significant differences in allograft survival probability between the two groups (Figure 1, P = 0.82), nor CLAD-Free survival between the groups (P = 0.88).
Conclusions: EVLP has been successfully incorporated in our program for over a decade and is a well-tolerated method to expand the organ donor pool without compromising post-transplant outcomes.
7 minute presentation; 7 minute discussion