What is the role of ECG in the diagnosis of hypokalemia (low potassium level)?

Updated: Dec 06, 2018
  • Author: Eleanor Lederer, MD, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Perform an electrocardiogram (ECG) to determine whether the hypokalemia is affecting cardiac function or to detect digoxin toxicity. The ECG may show atrial or ventricular tachyarrhythmias, decreased amplitude of the P wave, or appearance of a U wave.

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