RecruitingClinical trialNeutrophil Phenotypic Profiling and Acute Lung Injury in Patients After Cardiopulmonary Bypass (CPB)Acute lung injury (ALI) following cardiopulmonary bypass (CPB) is a serious complication, often prolonging the length of stay in ICU and potentially dealing to mortality. The objective of this study is to assess the mechanism of CPB-mediated acute lung injury in pediatric patients.