Inclusion Criteria:  Male or female at least 18 years old BMI 18~ 39 kg/m2 Scheduled to undergo a primary, unilateral Lichtenstein inguinal hernia repair with mesh ASA Physical Status Classification of 1, 2 or 3  Exclusion Criteria:  Clinically significant abnormal clinical laboratory test value Clinically significant 12-lead ECG History of orthostatic hypotension or syncope History of significant renal, hepatic, gastrointestinal, cardiovascular, metabolic, neurologic, psychiatric, or other condition History of seizure or currently taking anticonvulsants History of hypersensitivity to bupivacaine/ropivacaine, any other amide-type local anesthetic, propofol, oxycodone or morphine (or other opioids) History of severe or refractory post-operative nausea or vomiting (PONV) Abnormalities of laboratory parameters: HbA1c, platelet, hemoglobin, WBC, serun bilirubin/alanine aminotransferase/aspartate aminotrasferase, serum creatinine, PTT/INR Concurrent acute, or chronic painful restrictive/physical condition Received opioid therapy for longer than 4 days per week Prohibited medication: aspirin and other anti-platelet medication, anticoagulants, class III antiarrhythmic drugs, strong CYP1A2 inhibitors,systemic corticosteroids, NSAID, opioid, bupivacaine or ropivacaine, any investigational product History of drug abuse or alcohol abuse History or positive HIV, HBV or HCV An inguinal hernia repair in the last 3 months or has undergone 3 or more surgeries within 12 months Malignancy in the last 2 years Documented sleep apnea or on home continuous positive airway pressure treatment (CPAP)