A nurse is caring for an adult client who requires nasopharyngeal suctioning. Which of the following actions should the nurse take?

A. Set the suction device to 120 mm Hg: For nasopharyngeal suctioning in adults, the suction pressure should typically be set between 100 and 120 mm Hg to prevent injury to the mucous membranes while effectively clearing secretions. B. Apply suction to the catheter during insertion: Suction should not be applied during insertion of the catheter, as this can cause trauma to the mucous membranes. Suctioning should only occur when the catheter is in the appropriate position and being withdrawn. C. Have the client tuck his chin to his chest during suctioning: The client should not tuck the chin to the chest during suctioning. Instead, the client should be asked to either cough or breathe normally. Tucking the chin may obstruct the airway and make suctioning difficult. D. Apply a petroleum-based lubricant to the catheter: Petroleum-based lubricants should not be used as they can cause a fire hazard when oxygen is present. Instead, a water-soluble lubricant should be applied to the catheter if needed.