IRCT2013071411700N2 IRCT 2013-08-29 Women's Reproductive Health Research Center, Tabriz University of Medical Sciences Comparison of Patient-Controlled Epidural Analgesia with Intravenous Patient-Controlled Analgesia on Postoperative Pain Control after Major Gynecologic Oncologic Surgery-A Randomized controlled clinical trial Comparison of Postoperative Pain after Gynecologic Oncologic Surgery Epidural and Intravenous 2012-03-19 anticipated 90 Complete https://irct.ir/trial/11877 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. 0 (exploratory trials) Postoperative Pain Control after Gynecologic Oncologic Surgery. Intervention 1: After surgery, In recovery room for group one (IPCA) or which group that will receive intra venous PCA, analgesic will be infused, which contain 300 µg (6ml) fentanyl, 200mg (4ml) petidine and 8mg(2ml) ondansetron in Normal saline 0.9% with the total volume of 100 ml. First the speed of infusion will be ml/h 8-6, blouse administration of 2 ml every 15 minute are given by patient as needed. Intervention 2: Group 2 PCEA will receive epidural catheter from L3-L4 interspaces and only test dose(lidocaine 1.5% 3-4 ml and Epinephrine 1/200000) will be administrated. Group 2 will receive Bupivacaine 0.5% 100 mg fentanyl 150 µg (3ml)in Normal saline with total volume of 100 ml. Rate of infusion will be 6-8 ml/h and blouse administration of 2 ml every 15 minute as needed.