Risk of Acute Kidney Injury in Pulmonary Endarterectomy

Inclusion Criteria: Clinical diagnosis of chronic thromboembolic pulmonary hypertension (CTEPH) or pulmonary artery sarcoma, and scheduled for or having undergone pulmonary endarterectomy (PEA) . Aged 18 to 85 years . Underwent PEA using cardiopulmonary bypass (CPB) combined with deep hypothermic circulatory arrest (DHCA) technology . Complete clinical data (including preoperative baseline data, intraoperative CPB/DHCA parameters, and postoperative respiratory, circulatory, and renal function data) . Available renal function indicators at 3 months after surgery . Exclusion Criteria: Receiving preoperative maintenance renal replacement therapy . Complicated with severe liver failure, end-stage malignant tumors, or other diseases that affect short-term prognosis . Missing key data (e.g., CPB/DHCA duration, postoperative 72-hour serum creatinine \[Scr\]) that cannot be supplemented .