A nurse is caring for a child who received an initial dose of antibiotics 20 min ago. Which of the following findings is the priority to report to the provider?

A. An increased pulse may occur as a response to a variety of factors, including the infection or the administration of the antibiotic, but it does not necessarily indicate a severe allergic reaction. B. A maculopapular rash could be a mild allergic reaction or side effect to the antibiotic, but it is not as immediately concerning as wheezing, which could indicate an anaphylactic reaction. C. A headache can be a side effect of antibiotics, but it is not typically an urgent concern unless accompanied by other signs of severe allergic reactions. D. Wheezing is a critical finding and could indicate an allergic reaction or anaphylaxis, a potentially life-threatening condition. This symptom requires immediate attention and is the priority to report to the provider.