Abstract: According to the Hunter Serotonin Toxicity Criteria, the presence of either clonus or hyperreflexia is a must for making a diagnosis of Serotonin syndrome (SS). We report five patients with SS who had areflexia because of associated polyneuropathy. None of the patients fulfilled the Hunter criteria for SS.

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Abstract: Context: Delirium is prevalent in the intensive care unit (ICU) and has been associated with negative clinical outcomes. However, a quantitative and systematic assessment of published studies has not been conducted.Objective: Meta-analysis of clinical observational studies was performed to investigate the association between delirium and clinical outcomes.Data sources and study selection: Relevant studies were identified by investigators from databases including Medline, Embase, OVID and EBSCO from inception to May 2012.

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