<qa>  What is the group 1?- Group 1 epidural: Patients undergo placement of a thoracic epidural catheter followed by abdominalpelvic surgery. Patients then begin an epidural infusion of ropivacaine hydrochloride and fentanyl immediately after surgery postoperative day 0. Patients may also be supplemented with a patient controlled demand dose. The day after surgery postoperative day 1, patients are randomized as long as there is adequate pain control to 1 of 2 epidural management arms. 