Protocol Status: PUBLISHED
Protocol:
Version: 2026.01
Effective Date:
Last Reviewed:
Medical Director Approval:
Clinical Note: This content reflects current GCEMS clinical guidelines as of the dates listed above. If content appears inconsistent with current policy, use the most recent approved guideline and notify leadership for correction.

Magnesium Sulfate

 

INDICATIONS:

 

  • Torsades de Pointes/persistent v-fib/v-tach
  • Digitalis induced ventricular arrhythmias.
  • As an anticonvulsant in eclampsia.
  • Suspected hypomagnesaemia
  • Severe exacerbtion of reactive airway

 

DOSAGE:

 

  • ADULT:

 

    • Reactive Airway Disease/Torsade's/V-tach/V-fib:

 

      • 2 grams (4 mL) IV/IO over 2-3 minutes

 

    • Eclampsia/Preeclampsia:

 

      • 4 grams  (8 mL) IV over  2-3 minutes:
      • 8 grams (16 mL) IM if an IV is unobtainable
      • 4 grams in each dorsogluteal muscle (upper buttock)

 

  •  PEDIATRIC:

 

    • Not Approved

 

CONTRAINDICATIONS:

 

  • Heart blocks
  • Anuria
  • Active labor
  • hypomagnesaemia

 

SIDE EFFECTS:

 

  • Hypomagnesaemia
  • Hypocalcaemia
  • Anuria
  • Heart block
  • Active labor