If suctioning of the tracheostomy tube is necessary, the EMT should:
A. Attach a bag-valve mask to the tracheostomy tube and hyperventilate the patient for 2 mintues.
B. Instill 20 mL of saline into the tracheostomy tube and suction for no longer than 20 seconds.
C. Attempt to use the patient's suction device first because it is probably already sized correctly.
D. Insert the suction catheter to a depth of no more than 15 cm and set the suction unit to 140 mm Hg.
