Problem: A nurse is caring for a 15-year-old client with a cystic fibrosis (CF) history. The client was brought to the clinic for a cough that has worsened over the past 3 days. The client was diagnosed as a young child, but symptoms were mild and managed well, and he had never been hospitalized before. The cough is productive with yellow-green sputum. Auscultation of the lungs demonstrates bilateral rhonchi. What age-appropirate assessment considerations would the nurse Include for this client?