A 52-year-old woman is seen in an outpatient orthopedic clinic 3 days after knee arthroscopy. She ambulates with a new walker and reports right knee pain rated 7/10, described as sharp with movement. Her last dose of oral oxycodone 5 mg was 40 minutes ago per the order: "Oxycodone 5 mg PO every 4 hours PRN moderate-to-severe pain, for post-op knee pain, Dr. Alvarez, today." She also has an order for acetaminophen 650 mg PO every 6 hours PRN for mild pain. Vital signs: BP 118/72 mmHg, HR 78/min, RR 14/min, SpO2 98% on room air, temp 98.4°F (36.9°C). She is alert and conversing normally. Before the next PRN dose of oxycodone can be given, which finding must the LPN/VN check?
- Her serum potassium level before giving the opioid
- Her level of sedation and respiratory rate
- Her blood glucose level, since insulin peaks later
- Only chart the current pain score with no other action