Your patient is unresponsive and the cardiac monitor shows Torsades de Pointes as the patient's rhythm. As the code team is attempting to resuscitate the patient, you look through the patient's electronic health record to try to determine a potential cause for this rhythm. What found in the patient's record is the cause of this rhythm?
1) Magnesium level 2 mg/dL
2) Amiodarone
3) Potassium 2 mEq/L
4) Glyburide