What are the risk factors for cardiac arrhythmias in patients with hypokalemia (low potassium level)?

Updated: Dec 06, 2018
  • Author: Eleanor Lederer, MD, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Increased susceptibility to cardiac arrhythmias is observed with hypokalemia in the following settings:

  • Chronic heart failure
  • Underlying ischemic heart disease/acute myocardial ischemia
  • Aggressive therapy for hyperglycemia, such as with diabetic ketoacidosis
  • Digitalis therapy
  • Treatment with class III antiarrhythmic drugs (eg, dofetilide) [13]
  • Methadone therapy [14]
  • Conn syndrome [15]

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