A patient is experiencing frequent runs of ventricular tachycardia. The nurse should obtain an order from the provider to check serum levels of

potassium and magnesium


• Electrolyte imbalances that are common causes of ventricular tachycardia are hypomagnesemia (low magnesium), hypokalemia (low potassium), and hyperkalemia (high potassium).

• Incorrect: Calcium imbalances may cause QT and ST changes, but not typically ventricular tachycardia.

• Incorrect: Sodium imbalances do not cause arrhythmias.

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