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Magnesium sulfate is a medication used to manage and treat multiple clinical conditions and holds several on and off-label uses. This activity outlines the indications, mechanism of action, and contraindications for magnesium sulfate as a valuable agent in treating magnesium electrolyte abnormalities, eclampsia, and constipation. Objectives: Describe the metabolism of magnesium and how it is absorbed and excreted to maintain therapeutic levels. Review the clinical symptoms seen in hypo- and hypermagnesemia. Identify the potential adverse effects of magnesium sulfate administration. Explain the importance of proper magnesium sulfate administration and the need to be aware of the on and off-label uses and current magnesium levels to ensure appropriate dosing occurs. Access free multiple choice questions on this topic.
If patients exhibit signs and symptoms of hypermagnesemia, the recommendation is to discontinue magnesium sulfate products immediately. If the patient consumed magnesium sulfate orally, then the use of magnesium-free enemas or cathartics can be useful in removing excess magnesium from the GI tract. Patients should receive parenteral doses of calcium gluconate to help alleviate symptoms, but continued doses may be necessary as the calcium provides temporary improvement. IV hydration should also occur if clinically appropriate. In patients with severe renal disease, then hemodialysis should be considered.
Magnesium sulfate is a very commonly used medication in the hospital setting with multiple therapeutic uses. Interprofessional healthcare team members, including clinicians, physician assistants, nurse practitioners, and pharmacists who prescribe or dispense this medication, should be aware of the on and off-label uses and current magnesium levels to ensure appropriate dosing occurs. The pharmacist should help monitor for potential drug-drug interactions, and nursing staff needs to be fully aware of the proper administration of the medications. All individuals taking care of the patient should be mindful of potential side effects from magnesium sulfate administration and how to manage complications. Interprofessional coordination will optimize therapeutic outcomes when using this agent while minimizing adverse events. [Level 5]