A pt with a tracheostomy requires frequent suctioning for thick sputum, A nurse finds a colleague instilling saline in the endotracheal tube prior to suctioning. The most appropriate response by the nurse would be to
A. report the colleague to the charge nurse or manager
B. noted the practice on the pt chart to ensure consistency of suctioning techniques
C. ask the attending physician to review the suctioning policy.
D. collaborate with the colleague to review the evidence about this practice.