Primary outcomes
pleural effusion, postoperative pulmonary complications, pneumonia, atelectasis, bronchitis
PLEURAL EFFUSION, PNEUMONIA, ATELECTASIS, PULMONARY EDEMA, BRONCHITIS
The primary outcome was that the incidence of postoperative pulmonary complications, including pneumonia or bronchitis, pulmonary edema, atelectasis, and pleural effusion were recorded within 7 days after surgery. And the Clavien-Dindo classification was used to grade the severity of postoperative pulmonary complications [