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Ann Thorac Surg 2007;83:257-263
© 2007 The Society of Thoracic Surgeons
Department of Allergy, Immunology, and Respiratory Medicine, Lung Transplant Unit, The Alfred Hospital and Monash University, Melbourne, Australia
Accepted for publication July 18, 2005.
* Address correspondence to Dr Snell, Department of Allergy, Immunology, and Respiratory Medicine, The Alfred Hospital, Commercial Road, Melbourne, Victoria 3004, Australia (Email: g.snell{at}alfred.org.au).
BACKGROUND: A lung donor score may provide a numerical value of overall donor lung "quality" to allow comparison among different organizations and research protocols. This study aims to develop a simple scoring system and investigate its applicability on predicting donor selection and early post-lung-transplant (LTx) outcomes.
METHODS: Data of all donors referred to our institution in 2001 were initially analyzed to create a LTx donor score. Five domains, age, smoking history, chest X-ray, secretions, and arterial blood gas results, were included. A larger cohort of transplant recipients (years 2002 to 2005) was analyzed to validate the score against early post-LTx outcomes.
RESULTS: In the initial 2001 cohort, 36 of 87 (41%) donors were used for 41 LTx (used group) and 51 (59%) were declined for medical (lung-exclusion group, n = 31) and general (general-exclusion group, n = 20) reasons. The median donor scores in the used, general-exclusion, and lung-exclusion groups were 2.0, 2.0, and 10.0, respectively (p < 0.0001). In multivariate analysis of the validation cohort, the donor score in bilateral LTx was significantly associated with post-transplant ratio of arterial oxygen tension and inspired oxygen fraction (coefficient = –16.19, p = 0.002), primary graft dysfunction grade (coefficient = 0.21, p < 0.0001), and intubation hours (coefficient = 0.05, p = 0.04); however, a significant association was not seen in single LTx.
CONCLUSIONS: A proposed simple donor scoring system, based on five major donor variables available at the time of donor selection, may be useful for data comparison between specific centers, quality control, evaluative research, and clinical decision making in donor selection and management in LTx.
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Ann. Thorac. Surg. 2007 83: 264.
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