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  • Title: Effect of lung allograft ischaemia duration on postreperfusion graft function and postoperative course.
    Author: Bund M, Strüber M, Heine J, Jaeger K, Wahlers T, Haverich A, Piepenbrock S.
    Journal: Thorac Cardiovasc Surg; 1998 Apr; 46(2):93-6. PubMed ID: 9618811.
    Abstract:
    Lung transplantation is limited by the effects of ischaemia. Previous clinical studies related graft ischaemia duration to post-operative pulmonary function in the ICU, morbidity, and overall survival. This report describes the intraoperative pulmonary allograft function immediately after reperfusion. 23 lung transplantations (15 bilateral, 8 single) were analysed. Donor selection and organ procurement were identical. After pulmonary vasodilation with prostacyclin, allografts were flush-perfused with cold modified Euro-Collins solution. Mean duration of lung ischaemia was 255.1 +/- 35.1 min (190-314 min). Ischaemia times did not differ with respect to the recipient's disease or the use of extracorporeal circulation. After reperfusion, oxygenation indices deteriorated in 73.9% of patients compared with the native lungs (313.4 +/- 163.5 vs 427.2 +/- 96.1, p = 0.006). Linear regression analysis and subgroup analysis both revealed a significant influence of the duration of allograft ischaemia on early transplant function. Ischaemia of more than 4 hours resulted in an acceptable but significantly lower PaO2 (254.9 +/- 143.3 mmHg vs 463.0 +/- 149.2 mmHg, p = 0.011). However, mean time until extubation and time spent in the ICU were not affected. It is concluded that flush-perfusion of the lung with modified Euro-Collins solution provides reliable preservation of lung function up to four hours. Longer ischaemia, up to six hours, is followed by an acceptable but progressively reduced early transplant function.
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