Assessing and reassessing quality of donor lung is an essential step before lung transplantation[1, 2]. However， which parameters should be included in the assessment is still in debate[1, 3, 4]. Physiological measurements such as pulmonary arterial oxygen saturation and respiratory compliance can be relatively easily explored in vivo and ex vivo and are used routinely in lung assessment before and after lung transplantation as well as to assess the effect of reconditioning techniques such as ex vivo lung perfusion (EVLP)[2, 5].