The MOST devastating consequence of untreated hypernatrem is

(A). As the extracellular osmolality increases, water moves out of brain cells, leading to a decrease in brain volume, this decrease can result in tearing of intra cerebral veins and bridging blood vessels as the brain moves away from the skull and the meninges, patients may have subarachnoid, subdural, and parenchymal hemorrhages. Seizures and brain edema are more common during correction of hypernatremia