IBHRE COMPREHENSIVE ASSESSMENT 2026 FULL ANSWERS GRADED A+

IBHRE COMPREHENSIVE ASSESSMENT 2026
FULL ANSWERS GRADED A+

● Class II Anti-Arrhythmic Mechanism. Answer: Beta Blockers


● Class III Anti-Arrhythmic Mechanism. Answer: Potassium (K)
Channel Blockers


● Class IV Anti-Arrhythmic Mechanism. Answer: L-Type Calcium (Ca)
Channel Blocker


● Class Ia drugs. Answer: -Quinidine (rarely used)
-Procainamide
-Disopyramide.


Na Channel blockers that raise APD


● Class Ib drugs. Answer: -Lidocaine
-Mexiletine
-Phenytoin


Na Channel blockers that slightly lower APD

, ● Class Ic drugs. Answer: -Propafenone
-Flecainide


Na Channel blockers that don't change APD


● Class II Drugs. Answer: -Propranolol
-Atenolol
-Esmolol
-Metoprolol


Beta-Blockers. (β-blockers)


● Class III Drugs. Answer: -Amiodarone
-Dronedarone
-Sotalol
-Ibutilide
-Bretylium


Prolong APD (K Channel Blocker)


● Class IV Drugs. Answer: -Verapamil