Exam PTCE topic 1 question 164 discussion

This screenshot shows a simulation question asking, "What is considered a class IA Sodium Channel Blocker?" The correct answer provided is "Aminodarone and Propafenone." However, it seems there might be a mix-up in the provided answer. Amiodarone is actually a class III antiarrhythmic drug, not class IA. The correct class IA Sodium Channel Blockers are **quinidine**, **procainamide**, and **disopyramide**. Class IA antiarrhythmics work by slowing down the conduction of electrical impulses in the heart, which helps to treat certain types of arrhythmias. Propafenone is typically classified as a class IC antiarrhythmic, not IA. If you're preparing for an exam, you might want to verify this information with reliable sources or study materials. Let me know if you need more clarification or help with other questions!