Vomiting after gynecologic laparoscopy and under general anesthesia is associated with changes in excretion of serotonin metabolites
2004
INTRODUCTION: The efficacy of 5-HT(3)-receptor antagonists suggests a role of serotonin in the pathogenesis of postoperative nausea and vomiting (PONV). However, studies investigating the relationship between the turnover of serotonin and PONV were contradictory. Therefore we carried out a pilot study in order to find out whether results can be obtained that would justify further studies on a larger scale. METHODS: A total of 22 patients scheduled for elective gynaecological laparoscopy were enrolled. A balanced anaesthesia using sufentanil, etomidate, cisatracurium, isoflurane and nitrous oxide was administered and 5-hydroxyindoleaceticacid (5-HIAA) concentrations in the urine were measured within the 24 h after surgery. RESULTS: Only the patients that vomited postoperatively had a significant change in the concentrations of 5-HIAA over the time course investigated. However, comparison of urinary 5-HIAA concentrations of the group comprising patients that vomited with those that had no PONV did not reveal a significant difference. CONCLUSIONS: Results of this study support further investigation of the relationship between serotonin and PONV and suggest that there may in fact be an association between PONV and increased serotonin turnover.
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