Stage 1 — Recognize cues. Review the 0800 nursing note. Highlight the findings that require the nurse's follow-up.

Quick answer
Highlight six watery stools, feels unsafe walking, temperature 37.9 C, heart rate 96, up from 74, and WBC 14.2, up from 9.1.

Why this is correct
Each correct cue is a change from this client's own recent baseline. The pneumonia is resolving (fewer crackles, scant sputum, procalcitonin falling from 1.8 to 0.3), so a new fever, rising heart rate, and a WBC that jumped overnight point to a new process. Combined with six watery stools after ceftriaxone, azithromycin, and recent ciprofloxacin, and no laxative in 48 hours, the pattern fits suspected C. difficile infection with early fluid loss. A client who walked independently yesterday but now feels unsafe walking and is lightheaded on standing has new orthostatic volume loss and fall risk that need an immediate safety plan.

Easy analogy or mental picture
Think of two dashboards: the lung dashboard is turning green, but the gut dashboard just lit up. The alarms that matter are the ones that changed since yesterday, not the ones that were already there.

Memory hook
Lungs better, labs worse = look below the diaphragm.

NCLEX decision rule
When a treated condition is improving but the WBC, temperature, or heart rate are rising, look for a new complication of the treatment instead of attributing the change to the original diagnosis.

Why the other choices are wrong
Walks with a cane is her chronic baseline; the new cue is that she now feels unsafe even with support. Cough with scant white sputum, fewer crackles than on admission, SpO2 96 percent on room air, and procalcitonin down to 0.3 are tempting because they are respiratory or inflammatory data, but all show the pneumonia improving. Lactate 1.4 mmol/L is normal and argues against hypoperfusion at present.