Problem: A 14-year-old reports a worsening chronic cough and increased sputum production over the past few weeks. The patient has experienced more dyspnea and wheezing than baseline. On physical exam, digital clubbing and increased anterior-posterior chest diameter are noted. Apical crackles are auscultated on lung exam. The past medical history is positive for a mutation affecting the sodium/chloride exchange channels diagnosed in infancy. Which of the following treatment modalities should be used in this patient as a maintenance therapy? Need Assignment Help? • A. Long-acting bronchodilators • B. Systemic corticosteroids • C. Antipseudomonal antibiotics • D. Hypertonic saline