A 41-year-old man is admitted to the hospital for progressive obtundation. On admission the patient’s serum sodium level is 114 mEq/L. Treatment is initiated, and 7 hours later the patient’s serum sodium level is 134 mEq/L. Over the next 4 days the patient’s condition worsens with the development of dysarthria, dysphagia, and paraparesis. What pathologic process is most likely responsible for this patient’s new symptoms?
(A) Cerebral edema
(B) Diffuse axonal injury
© Intracerebral hemorrhage
(D) Osmotic demyelination
(E) Uncal herniation