Class I |
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- Symptomatic or medical refractory typical atrial flutter
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- Symptomatic PAF refractory to at least one class I/III drug
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- Symptomatic VPBs in the setting of structurally normal heart
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- VPB-induced cardiomyopathy
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- Idiopathic VF induced by unifocal VPBs
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- Bundle-branch reentrant VT
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- Recurrent VT in ischemic cardiomyopathy refractory to amiodarone
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Class IIa |
- Asymptomatic WPW with high-risk features or high-risk occupation
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- Symptomatic PAF prior to treatment with class I/III drug
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- Symptomatic persistent AF refractory to at least one class I/III drug or prior to class I/III drug
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- Recurrent VT in NICM refractory to antiarrhythmic therapy
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- Recurrent VT in adult congenital heart disease refractory to antiarrhythmic therapy
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- Recurrent VT in ARVC refractory to beta blocker
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Class IIb |
- Long-standing symptomatic persistent AF
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- Recurrent VT in ischemic cardiomyopathy as an alternative to pharmacologic therapy
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