ACLS Certification Association on Instagram: "Classifying Antiarrhythmics Part 1: Mechanism of Action Antiarrhythmic categories can mean two different things: what the drug does (mechanism) vs how effective it is (recommendation/benefit). In Part 1, we focus on the mechanism-based classes you need for ECG meds review and ACLS prep: ✅ Class I: Sodium channel inhibitors (e.g., lidocaine) ✅ Class II: Beta blockers (the “-lol” drugs) ✅ Class III: Potassium channel inhibitors (amiodarone’s primary cl