8.6K views | Watch this rapid review by Anthony Busti, MD, PharmD on the mechanism behind amiodarone induced prolongation of the QT interval on the ECG. To get full length lectures like this on hundreds of topics visit High Yield Med Reviews. | High-Yield Med Reviews | Facebook

📌Clinical Guide: Torsades de Pointes (TdP) & Long QT Syndrome (LQTS) --- Key Causes 1. Drug-Induced QTc Prolongation: - High-risk agents: Amiodarone, fluoroquinolones, macrolides, SSRIs, antipsychotics, antiemetics. 2. Electrolyte Imbalances: Hypokalemia, hypomagnesemia. 3. Inherited LQTS: LQTS1/2/3 mutations (confirm via genetic testing). Diagnosis - ECG: QTc ≥460 ms (women) / ≥450 ms (men). - Indeterminate Cases: Holter monitor, exercise stress testing. Acute TdP Management 1. Immediate Actio