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Amiodarone
(Class IIb) and procainamide (Class IIb) are
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recommended
ahead of lidocaine and adenosine for the
initial
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treatment
of hemodynamically stable wide-complex
tachycardia,
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especially
in patients with Compromised
cardiac function.
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Amiodarone and sotalol (a drug that
awaits Food and Drug
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Administration
approval for US use) are new agents
recommended as
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Class
IIa agents for the treatment of stable
monomorphic and
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polymorphic
ventricular tachycardia (VT).
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Magnesium
has shown effectiveness only in the treatment of known
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hypomagnesemic
states and torsades de pointes,
for which it still has
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a
Class IIb recommendation.
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