Understanding Serum Magnesium Levels

A nurse is overseeing a patient who has been hospitalized for heart problems. The healthcare provider orders a serum magnesium test to help evaluate the patient's cardiac function. The normal serum magnesium range is typically reported as 1.5 to 2.5 mg/dL. If the patient's serum magnesium level was found to be _____ mg/dL, it could indicate a potential risk of cardiac complications due to an electrolyte imbalance.