Continuous epidural versus wound infusion plus single morphine bolus as postoperative analgesia in open abdominal aortic aneurysm repair: a randomized non-inferiority trial.

Background: We compared a bundle of interventions including wound infiltration and continuous infusion with local anesthetics plus a single morphine bolus (CWI-M) with continuous epidural infusion (CEI) as postoperative analgesia.

Methods: Fifty-one adults undergoing open abdominal aortic aneurysm repair were randomized in this non-inferiority open-label trial. In the CEI group, patients received thoracic epidural levobupivacaine 0.