A Nurse Is Caring for a Patient with COPD

A nurse is caring for a patient with COPD. The patients medication regimen has been recently changed and the nurse is assessing for therapeutic effect of a new bronchodilator. What assessment parameters suggest a consequent improvement in respiratory status? Select all that apply.

A) Negative sputum culture
B) Increased viscosity of lung secretions
C) Increased respiratory rate
D) Increased expiratory flow rate
E) Relief of dyspnea