 People with acute respiratory failure usually require the use of an artificial breathing machine, known as a mechanical ventilator. Sedative medications, which help keep people calm and reduce anxiety, are often prescribed for children who are on mechanical ventilators. However, the longer that sedative medications are used, the longer a child may need to remain on mechanical ventilation. This study will evaluate the effectiveness of a team approach to sedation management that aims to reduce the number of days that children with acute respiratory failure require mechanical ventilation. 