Carbon monoxide controversies: neuropsychologic testing, mechanism of toxicity, and hyperbaric oxygen.

Recent animal and clinical data require a reevaluation of the traditional approach to the patient exposed to carbon monoxide. Unfortunately, these new data are inconclusive and generate controversies regarding the indications and value of neuropsychologic testing, cause of carbon monoxide toxicity, and indications (if any) for hyperbaric oxygen therapy. These controversies and their implications for the emergency physician are discussed.