A 71-year-old patient arrives on your med-surg unit after resection of his small-cell lung cancer. Upon admission to your unit and at the end of your shift, he’s stable with moderate pain. The next day, you find him lethargic and difficult to waken. He opens his eyes when you say his name, but he’s confused and withdraws his extremities in response to pain. He scores 11 on the GCS, which indicates moderate impairment. You notify the nurse practitioner of the patient’s status change and suggest ordering labs.