The charge nurse of a critical care unit is informed at the beginning of the shift that less than the optimal number of registered nurses (RN) will be working that shift. In planning assignments, which client should receive the most care hours by a RN?

An 82-year-old client with Alzheimer's disease and a newly fractured femur who has an indwelling urinary catheter and soft wrist restraints applied.

A 48-year-old marathon runner with a central venous catheter who is experiencing nausea and vomiting due to electrolyte disturbance following a race.

A 34-year-old admitted today after an emergency appendectomy who has a PIV and indwelling urinary catheter.

A 63-year-old chain smoker admitted with chronic bronchitis who is receiving oxygen via nasal cannula and has a saline lock PIV.