A nurse is caring for a school-age child who is postoperative and received morphine via IV bolus for pain 10 min ago. Which of the following findings is the nurse's priority?

A. Sedation is a concern, but it does not pose an immediate life-threatening risk like respiratory depression does. B. Bradypnea is the priority concern because morphine can depress the respiratory rate. If left unaddressed, this could lead to hypoxia and respiratory arrest. C. Euphoria is a common effect of morphine but does not pose an immediate risk to the child's health. D. Constipation is a common side effect of morphine, but it is not an immediate priority compared to respiratory depression.