Abstract
Postoperative gastro-intestinal motility disorders are of major importance for patient management following abdominal surgery both for clinical and economic reasons. In recent years, new pathophysiological links have been identified that contribute to postoperative ileus. The activation of sympathetic efferent neurons by visceral afferent nerve fibers, catecholamines, the stimulation of beta 3 -receptors in the gut wall, an inflammatory response of the gut wall with the consecutive release of nitric oxide, and opioids given for postoperative analgesia seem to be of major importance regarding the development of postoperative ileus. The pharmacological reduction of visceral afferent nerve fiber activity, non-steroidal anti-inflammatory drugs (NSAIDs) instead of opioids for postoperative pain, peripheral opioid receptor antagonists together with opioids for postoperative analgesia, motilides and 5-HT4 receptor agonists as prokinetic drugs are strategies that are currently evaluated to treat postoperative ileus. Our review summarizes the present knowledge on the pathophysiology of postoperative ileus and new experimental treatments that might be of importance in the future.
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