Critical care situations in neurological nursing often involve increased intracranial pressure, cerebrovascular accidents, and delirium. Increased ICP can lead to herniation and brainstem compression if pressure rises above 20 mmHg. Nursing focuses on early detection by monitoring changes in vital signs and neurological status. Treatment aims to lower ICP through interventions like hyperventilation, diuresis, and maintaining cerebral perfusion pressure. Ischemic and hemorrhagic strokes require different acute treatments and long-term management to prevent recurrence and complications. Delirium involves an acute, reversible disturbance in consciousness and cognition that usually has an underlying medical cause.