The aim of prospective study was to evaluate the pain relief in the postoperative period and consumption of opioid and non-opioid analgesics as a risk factor of the anastomotic insufficiency after rectal and rectosigmoideal resection for carcinoma. Anastomotic insufficiency is one of the most feared and life threatening early complications. No articles about the effect of the response to opioid therapy in the postoperative period on the risk of this major clinical problem have been published. We compared the effect of opioid and non-opioid analgesics in 109 patients who underwent rectal and rectosigmoideal resection in a prospective study. We evaluated the appearance of anastomotic insufficiency and clinical conditions in the relationship with the pain relief in the postoperative period and consumption of opioid and non-opioid analgesics. The pain intensity and the consumption of analgesics were significantly increased in the group of nonresponders. The rate of PONV (postoperative nausea and vomiting) in the responders and nonresponders groups was 69% and 78%, respectively. However, the differences did not reach significant level. Other clinical conditions were not significantly different between the both groups, too. The difference in the incidence of anastomotic insufficiency between both groups was highly significant, 6% cases of anastomotic insufficiency in the responders group and 19% in nonresponders group (χ2 = 7.73; p=0.0054). Nonrespoders to opioid therapy and their high consumption of second-line analgesics is a high risk factor for anastomotic insufficiency.

3rd Department of Surgery 1st Faculty of Medicine Charles University Prague and University Hospital Motol Prague Czech Republic

Institute of Pharmacology 1st Faculty of Medicine Charles University Prague and General University Hospital Prague Prague Czech Republic

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