A 13-year-old female with cystic fibrosis is scheduled for the removal of ankle hardware due to persistent pain. During preoperative evaluation, she reports incomplete resolution of a productive cough that she has had for two weeks despite having completed a course of antibiotics. On physical exam, her lungs are clear to auscultation, SpO₂ is 92% on room air, and she denies dyspnea. Which of the following is the MOST appropriate to avoid anesthesia-related respiratory complications?