Vol 4 - No 2 - oct . 2019 Hits: 322 Vol 4- No 2- oct . 2019 Please Rate Vote 1 Vote 2 Vote 3 Vote 4 Vote 5 The Effect of Epidural Fentanyl-Bupivacaine Combined With Ultra Low Dose of Naloxone in Post-operative Pelvic Surgery Comparison of Oxycodone vs Morphine Administered by Intravenous Patient Controlled Analgesia for Postoperative Pain at A Tertiary Care Center in Saudi Arabia