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what is the dosage of magnesium sulfate in adults with torsade de pointes w/ a pulse or AMI w/ hypomagnesemia
loading dose 1-2g mixed in 50-100 ml D5W over 5-60 min IV/IO
what is the dosage of magnesium sulfate in adults in cardiac arrest due to hypomagnesemia or torsade de pointes?
1-2g (2-4ml of a 50%solution) diluted in 10 ml of D5W IV/IO over 5-20 min
what is the dosage of magnesium sulfate for adults with seizure activity w/ pregnancy
1-4 g IV/IO over 3 min. (max 30-40g/day)
what is the asthma dosage for pediatric of magnesium sulfate
25-50 mg/kg (max 2g) over 10-20 min
what is the pediatric IV/IO infusion dosage for magnesium sulfate
25-50 mg/kg (max 2g) over 10-20 min, faster for torsade de pointe
how is magnesium sulfate supplied
10%, 12%, 50% solution in 80, 100, 125 mg/ml
side effects of magnesium sulfate
- 1. CNS depression
- 2. circulatory collapse
- 3. depressed reflexes
- 4. hypotension
- 5. diapheretic
contraindications of magnesium sulfate
- 1. heart block
- 2. myocardial damage
indications for use of magnesium sulfate
- 1. class IIa agent for v-fib/pulseless v-tach thats refactory to lidocaine
- 2. hypomagnesemia
- 3. torsade de pointes
- 4. seizures of eclampsia
what class is magnesium sulfate?
what is the loading dose in pediatrics for procainamide
15 mg/kg IV/IO over 30-60 min
what is the maintnence infusion of procainamide in adult?
1-4mg/min (dilute in D5W or NS)
dosage of procainamide in adult for other indications
- 20mg/min IV infusion until any one of the following occurs:
- arrhythmia suppresion
- QRS widens by greater than 50% of its pretreatment width
- total dose of 17mg/kg has been met
dosage of procainamide for urgent situations in adult
up to 50mg/min (max of 17mg/kg)
dosage of procainamide in adult for recurrent v-fib/ pulseless v-tach
20 mg/min iv infusion (max. 17mg/kg)
how is procainamide supplied
- 1. 1g in 10ml vials(100mg/ml)
- 2. 1g in 2ml vials (500mg/ml) for infusion
side effects of procainamide
- 1. widening of PR, QRS, QT intervals
- 2. AV heart block
- 3. hypotension
- 4. reflex tachycardia
- 5. bradycardia
major contraindications of procainamide?
- 1. torsade de pointes
- 2. 2nd or 3rd degree block (without pacemaker)
- 3. digitalis toxicity
- 4. tricyclic antidepresent overdose
indications for use of procainamide?
- 1. stable monomorphic v-tach with normal QT interval
- 2. reentry SVT uncontrolled by vagal maneuvers & adenosine
- 3. stable wide complex tachcardia of unknown origin
- 4. atrial fibrilation with rapid ventricular rate in patients with wolff-parkinson white syndrome
what type of drug is procainamide?
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