Stage 1 — Recognize cues. A 42-year-old client is evaluated in the emergency department. Review the nurse's note. Highlight the findings that require immediate follow-up.

Quick answer
Highlight the 36-hour omission of all insulin, BP 100/64 with HR 112, RR 26 with deep regular breathing, and voiding only twice in 24 hours.

Why this is correct
In type 1 diabetes, basal insulin is needed even without food; omitting it lets ketones accumulate. Deep, regular, rapid breathing with SpO2 98 percent points to compensation for metabolic acidosis, not hypoxemia. Compared with last month's 122/78 and 76, the current BP and HR show volume loss, and scant voiding confirms it.

Easy analogy or mental picture
Basal insulin is the brake that keeps the fat-burning engine idling. Taking your foot off the brake because you are not "driving" (eating) still lets the engine race and produce exhaust (ketones).

Memory hook
No food still needs basal: sick-day rule. Deep breaths with a normal SpO2 are blowing off acid.

NCLEX decision rule
When breathing is fast and deep but oxygenation is normal, think metabolic acidosis. When vital signs look only mildly abnormal, compare them with the documented baseline before discounting them.

Why the other choices are wrong
The resolved sore throat and T 37.2 C tempt as an infection source, but the throat has resolved and she is afebrile; infection is still evaluated later, yet these findings are not the current red flag. Occasional wine with none in 2 weeks makes alcoholic ketoacidosis unlikely. A1C 7.4 percent reflects prior control, not today's state. Being alert and oriented is reassuring and actually argues against a hyperosmolar presentation. Twenty years of type 1 diabetes and her usual regimen are background; the omission, not the regimen, is the cue.