While obtaining the vital signs of a 10-year-old child who had a tonsillectomy this morning, the nurse observes the child swallowing every 2 to 3 minutes. Which assessment should the nurse implement?

The nurse should inspect the posterior oropharynx of a child who is frequently swallowing after tonsillectomy to assess for bleeding or the presence of clots. Swallowing frequently can be a sign of postoperative bleeding, which is a potential complication of tonsillectomy. Touching the tonsillar pillars to stimulate the gag reflex or asking the child to speak would not provide information about the presence of bleeding. Assessing for teeth clenching or grinding is not related to this particular observation.