The study of postoperative intravenous patient-controlled (iv-PCA) analgesia used by oxycodone for Japanese Patients - The study of postoperative intravenous patient-controlled (iv-PCA) analgesia used by oxycodone for Japanese Patients

We terminated trial with no registered cases.There are two reasons for discontinuation. 1)Decreasing of candidate cases by the change of operating methods and postoperative management (many cases go back to ward directly without monitoring by artery-line that can use as blood sampling line) 2)By enactment of Clinical Trials Act, the usage restriction of oxycodone in this study arise (the possibility for regarding usage as Off-label use)