severe hypoxic brain injurysevere hepatic encephalopathysevere diffuse encephalopathysevere neonatal encephalopathysevere hypoxic encephalopathysevere hypoxic ischemic encephalopathyacute anoxic encephalopathysevere brain injurysevere traumatic brain injuryhypoxic injury to braineffects of traumatic brain injurybrain injury settlement