Overview Study on Efficacy of iv PCA With Fentanyl or Sufentanil in Patients Undergoing Laparoscopic Nephrectomy Status: Completed Trial end date: 2018-01-03 Target enrollment: Participant gender: Summary The purpose of this study is to compare the efficacy of iv PCA with fentanyl or sufentanil in patients undergoing laparoscopic nephrectomy Phase: N/A Details Lead Sponsor: Yonsei UniversityTreatments: FentanylKetorolacKetorolac TromethamineRamosetronSufentanil