Therapie
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Continuous low dose infusion of intravenous ketamine for postoperative analgesia was often associated with frightening acute psychodysleptic experiences in our patients. We hypothesized they were due to boluses of ketamine accumulated in the infusion line. We evaluated on two successive groups the impact of perfusion line modifications on psychodysleptic side effects occurrence. ⋯ An unidirectional valve must be considered to limit the occurrence of low dose intravenous ketamine infusion associated psychedelic side effects, during postoperative analgesia.