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Clinical pharmacy 2024/2025 Level 3 Pharm D Pharmacology 1 (PO 502)

Types of arrhythmias according to origin and rhythm:

• Atrial flutter

• Sinus tachycardia
• Sinus bradycardia

supraventricular
• Atrial fibrillation tachycardia (STV)
• Ventricular tachycardia

• Ventricular fibrillation

Antiarrhythmic drug classes:

Class Mechanism Example

IA: Quinidine

+
I Na channel blockers. IB: Lignocaine
IC: flecainide

II Beta Blockers Propranolol, Metoprolol, sotalol

+
III K channel blockers Amiodarone, Dronedarone

2+
IV Ca channel blockers Verapamil, diltiazem

Other Miscellaneous drugs; Digoxin - Adenosine
decrease conduction velocity. MgSO4 - Atropine

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