A nurse is caring for a postoperative patient using a patient-controlled analgesia (PCA) pump with morphine. Which assessment finding would require immediate nursing intervention?

• 1 Patient reports pain level of 6 out of 10 on the pain scale
• 2 PCA pump shows 15 attempts with 8 successful doses in the past 4 hours
• 3 Patient's blood pressure is 110/70 mmHg, down from baseline of 130/80 mmHg
• 4 Respiratory rate of 8 breaths per minute with drowsiness ✓ 정답

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