A Prospective double-blinded randomized clinical trial to test the effect of transversus
abdominis plane block on postoperative pain and opoid consumption after abdominal
Two groups of each 24 patients. All patients are given general anesthesia. The patients are
randomized to have a ultrasound guided bilateral transversus abdominis plane block with
either 2 x 20 ml 0,75 % ropivacaine or 2 x 20 ml of 0,9 saline. All patients are provided
with a PCA for self administration of morphine.
Pain score on visual analog scale, nausea and vomiting are monitored at 1, 2, 4, 6, 8 and 24
hours postoperatively as well as the total consumption of morphine after 24 hours.