The nurse is preparing to perform oropharyngeal suctioning. Which of the following steps in the sequence is incorrect?

A. Assist the patient into a supine position. Prepare supplies. Turn the suction unit on and set the suction control gauge to high. Connect the suction tubing to the suction machine and to the Yankauer suction catheter.

B. Place the suction catheter in the container of water and apply suction. If the patient has an oxygen device, remove it, placing it near the patient's face. Insert the catheter gently into the mouth along the gingival border (gum line).

C. Gently move the catheter around the patient's mouth until all of the secretions are cleared. Encourage the patient to cough. Replace the oxygen mask. Suction water from the basin through the catheter until the catheter is cleared of secretions. Reassess the patient's respiratory status and repeat the procedure if necessary.

D. Turn off the suction source. Wipe the patient's face. Discard the water into an appropriate receptacle. Discard the Yankauer suction catheter or place it in a nonairtight container to ensure that it remains uncontaminated. Provide oral care. Remove the gloves and perform hand hygiene. Record the procedure.