Which of these patients is most appropriate for the intensive care unit (ICU) charge nurse to assign to a RN who has floated from the medical unit?

A 44-year-old patient receiving IV antibiotics for meningococcal meningitis.

A 23-year-old patient who had a skull fracture and craniotomy the previous day.

A 30-year-old patient who has an ICP monitor in place after a head injury a week ago.

A 61-year-old patient who has an increased ICP and is receiving hyperventilation therapy.