While аssessing а 33 yeаr оld male patient fоr implementatiоn of an assess and treat respiratory care protocol, a respiratory therapist obtains the following information: HR 100 RR 22 SpO2 93% breathing air Breath sounds are decreased bilaterally in bases and there is a decreased resonance to percussion bilaterally in bases. A chest radiograph indicates atelectasis in both bases. The therapist should: