A respiratory therapist is providing chest physiotherapy and postural drainage on a cystic fibrosis patient with pneumonia in the right lateral segment. The patient was in high Fowlers prior to therapy. The patient experiences arrhythmias And dyspnea after five minutes of therapy. What should the therapist recommend?

a) Stop the therapy and notify the physician
b) Continue therapy with adjustments to positioning
c) Administer supplemental oxygen
d) Switch to a different chest physiotherapy technique