Analysis of Risk Factors and Establishment of Early Warning Model for Pulmonary Complications

The purpose of this study is to collect perioperative diagnosis and treatment information for cardiac surgery patients, collect blood samples for laboratory testing when necessary, and analyze the data to clarify the risk factors of pulmonary complications in patients undergoing cardiac surgery during the perioperative period. On this basis, a clinical early warning model for pulmonary complications after cardiac surgery will be developed to reduce the risk of pulmonary complications and even death in clinical practice.