A nurse on the medical surgical floor is caring for a patient with chronic atrial fibrillation and congestive heart failure. The nurse notices on the telemetry EKG monitor that the patient is having frequent,
•The normal serum magnesium level is 1.3-2.1 mEq/L. Magnesium levels below 1.3 mEq/L (hypomagnesemia) can cause cardiac dysrhythmias like premature ventricular contractions (PVCs).
•If the magnesium is not replaced, the patient is at risk for ventricular tachycardia or ventricular fibrillation.
•The nurse caring for a patient with hypomagnesemia should notify the doctor to get orders for appropriate replacement of magnesium.