IBHRE CEPS Questions and Correct Answers | Latest Update

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IBHRE CEPS Questions and Correct Answers | Latest
Update
Class 1 Anti-Arrhythmic Mechanism

Ans: Sodium (Na) Channel Blockers

Class II Anti-Arrhythmic Mechanism

Ans: Beta Blockers

Class III Anti-Arrhythmic Mechanism
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Ans: Potassium (K) Channel Blockers
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Class IV Anti-Arrhythmic Mechanism

Ans: L-Type Calcium (Ca) Channel Blocker

Class Ia drugs
2026




Ans: -Quinidine (rarely used)
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-Procainamide

-Disopyramide.

Na Channel blockers that raise APD

Class Ib drugs

Ans: -Lidocaine

-Mexiletine

-Phenytoin

Na Channel blockers that slightly lower APD

Class Ic drugs

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Ans: -Propafenone

-Flecainide

Na Channel blockers that don't change APD

Class II Drugs

Ans: -Propranolol

-Atenolol

-Esmolol
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-Metoprolol
Guru01 - Stuvia




Beta-Blockers. (β-blockers)

Class III Drugs

Ans: -Amiodarone
2026




-Dronedarone
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-Sotalol

-Ibutilide

-Bretylium

Prolong APD (K Channel Blocker)

Class IV Drugs

Ans: -Verapamil

-Diltiazem

L-Type Ca Channel Blockers

Phase 0 AP