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6 Cards in this Set
- Front
- Back
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Anti--Class IA
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-Block fast sodium channels in cardiac muscle, resulting in decreased excitability; prolong repolarization
EG: quinidine, procainamide, disopyramide |
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Anti--Class IB
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-Block fast Na channels in cardiac muscle, resulting in decreased excitability; shorten repolarization or have little effect
EG: lidocaine, tocainide |
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Anti--Class IC
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-profoundly slow conduction in normal tissues
EG: Flecainide, propafenone |
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Anti--Class II
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-Beta Blockers--suppress automaticity and rate of impulse conduction, repolarization time unchanged
EG: Propranolol, atenolol |
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Anti--Class III
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-Markedly prolong repolarization time, usually by interfering with the outlfow of potassium through potassium channels
EG: amiodarone, sotalol |
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Anti--Class IV
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-Calcium Channel blockers; block inward movement of calcium to slow impulse conduction (particularly through the AV node) and vascular smooth muscle contraction
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