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Flecainide  Na channel



               blocker class IC




                   •  Taken orally.
                   •  Mech:

                       1)  blocks Na+ channels → ↓ conduction, not affect K+ channels
                       2)  delays ventricular repolarization → ↑ ERP (effective refractory period).


                   •  Uses:
                       Used in severe ventricular dysrhythmia




                   •  Side eff blurred vision, dizziness, and nausea, negative inotropic effect
                       and can aggravate chronic heart failure, Proarrthymic


                   •  Precautions and interaction




                   •
                   •  Not used with drugs which ↓ cardiac contractility as (β-blockers & Ca2+
                       channel blocker
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