Postoperative Analgesia and Recovery Course After Major Colorectal Surgery in Elderly Patients: A Randomized Comparison Between Intrathecal Morphine and Intravenous PCA Morphine

Intrathecal morphine, as compared with intravenous PCA morphine alone, improves immediate postoperative pain and reduces parenteral morphine consumption but does not improve postoperative recovery in elderly patients after major colorectal surgery.