Mr. Thompson, an 80-year-old man, is hospitalized and receiving controlled-release morphine sulfate (MS Contin) $30 \mathrm{mg}$ every 8 hours for management of the pain associated with colon cancer. He is receiving an intravenous $\mathrm{D}_5 \mathrm{NS}$ infusion of $100 \mathrm{~mL} / \mathrm{h}$. The nurse assessing him one evening assessment has difficulty arousing him. His vital signs are temperature $98.4^{\circ} \mathrm{F}$, pulse 104 beats/min, respirations 7 breaths $/ \mathrm{min}$, and blood pressure $92 / 52 \mathrm{~mm} \mathrm{Hg}$, with $\mathrm{O}_2$ saturation $89 \%$ on room air.
- As the nurse caring for Mr. Thompson, what are the priority interventions at this time?
- Mr. Thompson arouses and is oriented to person, place, and time. He begins complaining of his usual left upper quadrant abdominal pain. His vital signs are temperature $98.4^{\circ} \mathrm{F}$, pulse 90 beats/min, respirations 16 breaths $/ \mathrm{min}$, blood pressure $114 / 62 \mathrm{~mm} \mathrm{Hg}$, with an $\mathrm{O}_2$ saturation of $96 \%$ on $2 \mathrm{~L} / \mathrm{min}$ nasal cannula. His nurse practitioner is at the bedside and has called the pain management team to reassess his pain control. What additional assessment should be made over the next few hours?