A Comparison of the Safety and Effectiveness of Two Forms of Patient-controlled Pain Medication Used After Scheduled Abdominal or Pelvic Surgery: The Fentanyl Transdermal System Versus the Morphine Intravenous Pump

The purpose of this study is to compare two pain medications delivered by two different forms of patient-controlled pain management systems: the Fentanyl HCl Patient-Controlled Transdermal System (E-TRANS fentanyl) and the morphine intravenous pump. Fentanyl HCl and morphine are narcotic pain relievers. The E-TRANS fentanyl system is a small unit worn on the patient\'s upper outer arm or chest that uses low-intensity electrical current to deliver fentanyl through the skin and into the patient\'s bloodstream. The patients studied will be those who have just had scheduled abdominal or pelvic surgery.