Which is a key sign of electrolyte disturbance such as hyperkalemia or hypokalemia and the initial action?

• A. Signs vary (muscle weakness, arrhythmias); notify clinician, monitor ECG, review meds, and follow orders for correction.
• B. Nausea and vomiting only; ignore.
• C. They are not clinically significant; no action needed.
• D. Increase potassium intake immediately.

Answer: (A)

Potassium disturbances affect how nerves and muscles, including the heart, function, so signs can vary but often include muscle weakness and potential rhythm problems. Because the heart’s electrical activity can deteriorate quickly with abnormal potassium levels, the safest and most effective initial response is to promptly notify the clinician, initiate continuous ECG monitoring, review current medications for contributors, and await specific orders for correction. This approach prioritizes patient safety as the appropriate treatment depends on the level and symptoms and may involve antidotes or therapies chosen by the clinician.

Nausea and vomiting can occur with various conditions but they do not reliably identify potassium disturbances, and ignoring symptoms is dangerous. Assuming there is no significance is incorrect, and increasing potassium intake would worsen hyperkalemia or be unhelpful in hypokalemia.