Using multivariable logistic regression models, we found seven independent predictors of PPCs: age ≥70 years, current smoker within 2 months, ASA class ≥2, the presence of airflow limitation, serum albumin <4.0 g/dL, emergency surgery, and cardiac/aortic aneurysm repair/abdominal open surgery. The gene discussed is ALB; the disease is aortic aneurysm.