A respiratory therapist has been assigned to administer ACT…

A respirаtоry therаpist hаs been assigned tо administer ACT tо a patient with acute lobar atelectasis. What should the RT consider to determine the length and frequency of the treatment?I. Most pediatric patients require ACTs for at least 60 minutes.II. ACT is rarely needed more than every 4 hours.III. ACT orders should be evaluated at least every 48 hours for patients in the ICU.IV. ACT for patients with atelectasis due to CF requires at least 30 to 45 minutes.