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Perioperative CNS dysfunction risk. Cardiopulmonary bypass: 4-6% stroke, 79-88% neuropsych. dys. 1st week, 30-50% at 6 mo. (McKhann, Ann Thoracic Surg, 1997)Neurologic surgery: Aneurysm clipping 14% transient or permanent deficitsSurgery (any type) in the elderly: High incidence of neuropsychiatric dysfunction. Are special precautions indicated in these populations?.
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