A nurse is assessing an adult client who is receiving morphine via continuous IV infusion. The nurse should identify that which of the following is the priority finding?

A. Respirations deep at a rate of 10/min: Morphine depresses the respiratory center in the brainstem, leading to hypoventilation. A respiratory rate of 10/min indicates early respiratory depression, which is the most life-threatening adverse effect and requires immediate intervention. B. Vomiting 30 mL of fluid: Nausea and vomiting are common side effects of morphine but are not immediately life-threatening. They can be managed once airway and breathing are stable. C. Blood pressure 90/60 mm Hg: Mild hypotension is a possible side effect of morphine due to vasodilation but is less critical than respiratory compromise. Monitoring and fluid support may be required, but it is not the priority. D. Urinary output of 20 mL within 1 hr: Morphine may cause urinary retention, but this finding is not immediately life-threatening. It should be addressed after ensuring adequate ventilation and oxygenation.