The nurse is caring for a patient with a tracheostomy tube.Which nursing intervention is most effective in promoting effective airway clearance?
A) Suctioning respiratory secretions several times every hour. B) Administering humidified oxygen through a tracheostomy collar. C) Instilling normal saline into the tracheostomy to thin secretions before suctioning. D) Deflating the tracheostomy cuff before allowing the patient to cough up secretions.