Stage 4 — Generate solutions. Potassium falls to 3.2 mmol/L after initial fluids. Which interventions belong in the immediate plan? Select all that apply.
Select All That Apply
Choose your responses, then check the answer.
Explanation
A potassium below 3.5 mmol/L requires potassium replacement and delay of insulin until the level rises above the treatment threshold. Cardiac, renal, urine-output, and repeat laboratory monitoring guide safe replacement. The pH does not support routine bicarbonate.
Quick answer Replace potassium, monitor the heart and kidneys, and delay insulin until potassium is safely above the protocol threshold.
Why this is correct Insulin shifts potassium into cells and can worsen an already low serum level, increasing arrhythmia and respiratory-muscle risk. Replacement and repeat measurements come before insulin in this situation.
Easy analogy or mental picture Insulin opens a door that moves potassium into cells. If the hallway level is already low, refill it before opening the door wider.
Memory hook Potassium below 3.5: replace before insulin drives.
NCLEX decision rule In DKA, a low potassium changes the sequence: replace and monitor first, then begin insulin when the protocol threshold is met.
Why the other choices are wrong The admission potassium no longer describes the current risk, and routine bicarbonate at this pH does not correct the urgent potassium problem.
References
1Hyperglycemic Crises in Adults With Diabetes: A Consensus ReportDKA diagnosis, fluids, insulin, potassium, dextrose, monitoring, resolution, and transition
Case updateAfter initial isotonic crystalloid, potassium is 3.2 mmol/L. The insulin infusion has not yet started, urine output is present, and continuous monitoring is available.