Glucocorticoids for Post-operative Patients With Acute Type A Aortic Dissection (The GLAD Trial)

All eligible patients randomised to the glucocorticoid group will receive intravenous Methylprednisolone for 3 days after surgery. The dosage is 2mg/kg/d on post-operative day 1, 1mg/kg/d on post-operative day 2, and 0.5mg/kg/d on post-operative day 3. The daily dosage will be administered with two injections (12h interval).