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IBHRE CEPS Questions and Correct
Answers the Latest Update
Class 1 Anti-Arrhythmic Mechanism
✓ Sodium (Na) Channel Blockers
Class II Anti-Arrhythmic Mechanism
✓ Beta Blockers
Class III Anti-Arrhythmic Mechanism
✓ Potassium (K) Channel Blockers
Class IV Anti-Arrhythmic Mechanism
✓ L-Type Calcium (Ca) Channel Blocker
Class Ia drugs
✓ -Quinidine (rarely used)
✓ -Procainamide
✓ -Disopyramide.
✓
✓ Na Channel blockers that raise APD
Class Ib drugs
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✓ -Lidocaine
✓ -Mexiletine
✓ -Phenytoin
✓
✓ Na Channel blockers that slightly lower APD
Class Ic drugs
✓ -Propafenone
✓ -Flecainide
✓
✓ Na Channel blockers that don't change APD
Class II Drugs
✓ -Propranolol
✓ -Atenolol
✓ -Esmolol
✓ -Metoprolol
✓
✓ Beta-Blockers. (β-blockers)
Class III Drugs
✓ -Amiodarone
✓ -Dronedarone
✓ -Sotalol
✓ -Ibutilide
✓ -Bretylium
✓
✓ Prolong APD (K Channel Blocker)
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