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Thursday 01 June 2006

Ziprasidone in the treatment of delayed carbon monoxide encephalopathy.

By: Hu MC, Shiah IS, Yeh CB, Chen HK, Chen CK.

Prog Neuropsychopharmacol Biol Psychiatry 2006 Jun;30(4):755-7

Delayed carbon monoxide (CO) encephalopathy is a serious complication of acute CO poisoning. We present a case of successful treatment of ziprasidone, a newer atypical antipsychotic, in delayed CO encephalopathy. A 52-year-old depressed woman suffered acute CO intoxication after an attempt of suicide by burning charcoal. She was initially treated with hyperbaric oxygen (HBO) therapy for the acute intoxication. One week later, the patient developed neuropsychiatric symptoms including parkinsonism, tardive dyskinesia (TD), cognitive deterioration, urinary incontinence, gait disturbance, mutism, disorientation to time, place and person, and disorganized as well as disturbing behavior. During her psychiatric hospitalization, the patient had been treated with daily HBO therapy, bromocriptine (2.5 mg/day), the conventional antipsychotic sulpiride (600 mg/day), and atypical antipsychotics such as risperidone (5 mg/day) and quetiapine (400 mg/day). However, her delayed neuropsychiatric sequelae of CO intoxication persisted despite of these treatments. It was until she had been treated with ziprasidone (80 mg/day) for 10 days that her mental condition was improved. With ziprasidone therapy, the patient obtained substantial improvement in her neuropsychiatric symptoms, cognitive function, and daily activities. Our case indicates that ziprasidone can be used effectively in the treatment of delayed CO encephalopathy.

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