Magnesium Sulfate

Question 1

Magnesium Sulfate Class

Answer 1

Electrolyte, Class V antidysrhytmic

Question 2

Magnesium Sulfate Mechanism of Action

Answer 2

• Depresses the CNS, blocks peripheral neuromuscular transmission, and produces anticonvulsant
• Can cause bronchodilation after beta agonist anticholinergics have been administered

Question 3

Magnesium Sulfate Indications

Answer 3

Management of TdP, Severe bronchoconstriction with impending respiratory failure, Seizure during the third trimester of pregnancy or in postpartum patient

Question 4

Magnesium Sulfate Contraindications

Answer 4

Known hypersensitivity, heart block, myocardial damage, diabetic coma, hypermagnesemia, hypercalcemia

Question 5

Magnesium Sulfate Dosage and Administration

Answer 5

OBGYN: 4 g IV drip over 10 min
Respiratory: 2 g IV drip over 10 min
Cardiac: 1 - 2 g IV slow push