Stage 2 — Analyze cues. For each finding, identify the conclusion it most directly supports.

Quick answer
Separate diagnostic ketosis and acidosis from volume-loss cues and from the potassium drop expected during treatment.

Why this is correct
Serum potassium may begin normal or high even though total-body potassium is depleted. Insulin, volume expansion, and correction of acidosis move potassium down, so the initial value cannot be treated as a surplus.

Easy analogy or mental picture
The blood potassium is a snapshot of what is outside the cells, not the total warehouse inventory. Insulin moves stock back inside and can reveal the shortage quickly.

Memory hook
High serum potassium can hide a depleted DKA body.

NCLEX decision rule
Before and during DKA insulin therapy, trend potassium rather than trusting the arrival value; connect each cue to diagnosis, perfusion, or treatment risk.

Why the other choices are wrong
Chronic glycemic control does not determine the immediate resuscitation sequence, and the diagnostic ketone-acid pattern should not be mislabeled as a potassium or volume finding.