# Place the actions in order for an adult with diabetic ketoacidosis and an initial potassium level of 3.0 mmol/L.

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> url: https://mymerci.kr/pages/nclex_q.php?qn_id=395483&lang=en  
> language: en  
> subject: Medical Emergencies  
> category: PA

## Question

Place the actions in order for an adult with diabetic ketoacidosis and an initial potassium level of 3.0 mmol/L.

Monitor glucose every 1 to 2 hours and potassium, ketones, pH, fluid balance, and treatment complications at protocol intervals

Assess airway, breathing, circulation, mental status, volume status, glucose, ketones, acid-base findings, kidney function, and electrolytes

When potassium rises above 3.5 mmol/L, begin prescribed IV regular insulin and adjust fluids and dextrose according to glucose and ketone response

Begin prescribed isotonic or balanced crystalloid resuscitation and evaluate hemodynamic and pulmonary response

Begin prescribed potassium replacement and cardiac monitoring while continuing fluid resuscitation

## Explanation

Confirm DKA severity, hypovolemia, and electrolyte risk first. Begin crystalloid resuscitation, then replace potassium because the initial level is below 3.5 mmol/L. Delay insulin until potassium is above 3.5 mmol/L to reduce the risk of life-threatening arrhythmia and respiratory muscle weakness. Once safe, start insulin and continue frequent glucose, potassium, ketone, acid-base, and fluid-balance monitoring.

## In-depth explanation

Correct sequence
Assess → crystalloid → potassium replacement → insulin only after potassium exceeds 3.5 mmol/L → frequent multidomain monitoring.

Why this is correct
Total-body potassium is depleted in DKA. Insulin shifts potassium into cells and can turn an already low serum level into a fatal arrhythmia or muscle weakness.

NCLEX decision rule
In DKA with potassium below 3.5 mmol/L, fluids and potassium come before insulin.References
12024 Hyperglycemic Crises Consensus Report
2Diabetologia consensus publication

## Clinical scenario

DKA with hypokalemia
The client has glucose 468 mg/dL, beta-hydroxybutyrate 5.2 mmol/L, pH 7.19, dehydration, and a patent IV. Prescriptions follow the 2024 international hyperglycemic-crisis consensus report.

## Key concepts

- **Beta-Hydroxybutyrate** — The predominant circulating ketone measured to diagnose and follow diabetic ketoacidosis.
- **Total-Body Potassium Deficit** — Loss of potassium from the body even when the initial serum concentration appears normal or high.
- **Euglycemic DKA** — Diabetic ketoacidosis with significant ketosis and acidosis despite glucose below the traditional hyperglycemic range.

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_For study reference only. Always follow current clinical guidelines and your institution’s protocols._

