A nurse is caring for a 2-month-old infant who is postoperative following surgical repair of a cleft lip. Which of the following actions should the nurse take?

In an infant with a history of vomiting and fever, body weight is the most reliable indicator of fluid loss. Monitoring the infant's weight over time can help assess the degree of dehydration and guide the appropriate fluid replacement therapy. A significant decrease in body weight suggests significant fluid loss.

Option A: Skin integrity is important to assess for signs of dehydration, but it is not as reliable as body weight in determining the extent of fluid loss.
Option B: Respiratory rate can be affected by various factors and is not a direct indicator of fluid loss.
Option D: Blood pressure is not the most reliable indicator of fluid loss in an infant with dehydration. In severe cases of dehydration, blood pressure can drop, but it is not as sensitive as body weight in assessing the extent of fluid loss.

Correct answer: B

A. Increased pain: Increased pain is a common and expected finding after a tonsillectomy. The surgical removal of tonsils creates wounds in the throat, which can cause discomfort and pain during the healing process. However, increased pain alone is not a specific manifestation of hemorrhage. Hemorrhage would be indicated by other signs, such as drooling, frequent swallowing, or vomiting blood.

B. Frequent swallowing: This can indicate that the child is swallowing blood, which is a common sign of bleeding at the surgical site. Children might not always show obvious signs of bleeding in the mouth, so frequent swallowing can be a subtle but critical indicator of hemorrhage.

C. Poor fluid intake: Poor fluid intake is a common concern after a tonsillectomy due to postoperative pain and discomfort in the throat. The child may be reluctant to drink or eat initially because of their sore throat. However, poor fluid intake alone is not an indicative sign of hemorrhage. Hemorrhage would present with other symptoms, such as drooling, frequent swallowing, or vomiting blood.

D. Drooling:While drooling can occur due to discomfort, pain, or difficulty swallowing, it is not as specific or immediate a sign of hemorrhage as frequent swallowing.