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  • Title: Early outcomes of bilateral sequential single lung transplantation after ex-vivo lung evaluation and reconditioning.
    Author: Zych B, Popov AF, Stavri G, Bashford A, Bahrami T, Amrani M, De Robertis F, Carby M, Marczin N, Simon AR, Redmond KC.
    Journal: J Heart Lung Transplant; 2012 Mar; 31(3):274-81. PubMed ID: 22088786.
    Abstract:
    BACKGROUND: Ex vivo lung perfusion (EVLP) is a novel approach for extended evaluation and/or reconditioning of donor lungs not meeting standard International Society for Heart and Lung Transplantation criteria for transplantation. METHODS: We retrospectively evaluated 13 consecutive EVLP runs between January 2009 and December 2010. Lungs rejected for routine transplantation were implanted to the EVLP circuit and reperfused using acellular supplemented Steen Solution (Vitrolife, Göteborg, Sweden) up to a target flow rate of 40% of the donor's calculated flow at a cardiac index of 3.0 liters/min/m(2); target left atrial pressure < 5 mm Hg; and pulmonary artery pressure < 15 mm Hg. Mechanical ventilation was introduced after rewarming to 32°C: tidal volume, 6 to 8 ml/kg; respiratory rate, 7 to 8 breaths/min; duration of inspiration/expiration (I/E) ratio, 1:2; and positive end-expiratory pressure, 5 to 10 cm H(2)O. Hemodynamic and respiratory data monitoring with hourly clinical assessment were performed. Donor data, conversion rate to transplantation, and recipient outcome were analyzed. RESULTS: Donor data (n = 13) were: age, 44.23 ± 8.33 years; female/male, 8:5; cause of death: intracranial hemorrhage, 11 (85%), stroke, 1 (7.5%), hypoxic brain injury, 1 (7.5%); smoking history, 9 (69%), 17.44 ± 8.92 pack-years; mechanical ventilation, 102.6 ± 91.92 hours; chest x-ray imaging: abnormal, 12 (92.5%); normal, 1 (7.5%). EVLP: mean 141 ± 28.83 minutes. Arterial partial pressure of oxygen/fraction of inspired oxygen 100% before termination of the circuit vs pre-retrieval value: 57.32 ± 9.1 vs 42.36 ± 14.13 kPa (p < 0.05). Six (46%) pairs of donor lungs were transplanted. Median follow-up was 297.5 days (range, 100-390 days), with 100% survival at 3 months. CONCLUSIONS: EVLP may facilitate assessment and/or reconditioning of borderline lungs, with a conversion rate of 46 % and good short-term survival.
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