Magnesium Sulfate

Question 1

Magnesium Sulfate Class

Answer 1

Electrolyte, anticonvulsant, CNS depressant, anti-dysrythimic, tocolytic

Question 2

Magnesium Sulfate Action

Answer 2

Reduces striated muscle contractions and blocks peripheral neurotransmitter by reducing acetylcholine at the myoneural junction

Question 3

Magnesium Sulfate Indicaations

Answer 3

Seizures due to eclampsia after seizure activity is stopped, torsades de pontes, unstable v-tach attributed to digitalis toxicity, hypomagnesemia, status asmathecias unresponsive to beta-adrenergic drugs, preterm labor

Question 4

oresisMagnesium Sulfate Contraindications

Answer 4

Hypersensitivity, shock, heart blocks, hypermagnesemia, myasthenia gravis

Question 5

Magnesium Sulfate Side effects

Answer 5

Nausea, vomiting, flushing, diaphoresis, cramps, bradycardia

Question 6

Magnesium Sulfate Adult dose - IVPB

Answer 6

Loading dose: 4-6g over 20 min, maintenance 1-3 g/hr tritiated top effect

Question 7

Magnesium Sulfate Adult dose - polymorphic v-Tach (with pulse)

Answer 7

IV 1-2 g diluted in 50 ml NS over 15 minutes

Question 8

Magnesium Sulfate adult dose - v-Fib/pulseless V-tach associated with torseda de pointes

Answer 8

1-2 g diluted in 10 ml NS given as a bolus

Question 9

Magnesium Sulfate adult dose - eclampsia seizures

Answer 9

5 g IM in each buttock for a total of 10 g

Question 10

Magnesium Sulfate adult dose - severe asthma

Answer 10

2 g as a signle dose over 20 minutes

Question 11

Magnesium Sulfate pedi dose

Answer 11

25-50 mg/kg over 10-20 min mixed with NS to total volume of 20 mL (2g max dose)

Question 12

Magnesium Sulfate Onset

Answer 12

Immediate (IV) 3-4 hrs (IM)

Question 13

Magnesium Sulfate Duration

Answer 13

30 min (IV) 3-4 hrs (IM)