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

Explanation

• 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.

Visit our website for other NCLEX topics now!