A patient vomits during manual resuscitation (bag-valve-mask) ventilation. The respiratory therapist resumes bag-mask ventilation after suctioning the patient's upper airway. However, squeezing the resuscitator results in little volume delivery to the patient, as evidenced by diminished chest movement, very little resistance to squeezing the resuscitator, and a "hissing" sound during inspiration. The therapist should
A.reposition the patient.
B.increase the depth and frequency of ventilation.
C.suction the patient again.
D.replace the manual resuscitator (bag-valve-mask).
D. The bag-valve device is not functioning properly and must be replaced.
(this multiple choice question has been scrambled)