Comparison Between Volatile Anesthetic-desflurane and Total Intravenous Anesthesia With Propofol and Remifentanil on Early Recovery Quality and Long Term Prognosis of Patients Undergoing Pancreatic Cancer and Common Bile Duct Cancer Surgery

Inclusion Criteria:

• Patients with ASA class I-III who are scheduled to undergo general anesthesia and whoare diagnosed with pancreatic cancer or common bile duct cancer and who are scheduledfor PPPD or distal pancreatectomy

• patients who voluntarily agree to participate the clinical study after fully informedand understood about the study

Exclusion Criteria:

• there was distant metastasis at the time of diagnosis

• history of drug adverse reaction or use of opioid or sedative drugs before the surgery

• patients who can not communicate enough to answer the survey

• obesity patients over BMI 30

• patient who are expected to maintain ventilator care on the first day of postoperation due to the difficult to extubation right after the surgery

• patients who have inappropriate reasons to participate in clinical research