Atrial Flutter vs. Atrial Fibrillation: Both are tachyarrhythmia, almost with same symptoms of palpitation, dizziness or fainting, shortness of breath, and chest pain or tightness, both increase the chance of blood clots and stroke The main difference is that atrial fibrillation is always irregular whereas atrial flutter usually regular rhythm Multifocal Atrial Tachycardia (MAT) is more common in elderly patients with chronic lung disease (e.g COPD) Cardioversion and digoxin are not useful in the management of Multifocal Atrial Tachycardia (MAT) Features suggesting ventricular tachycardia (VT) rather than supra ventricular tachycardia (SVT) with aberrant conduction are: Atrioventricular (AV) dissociation Fusion or capture beats Positive QRS concordance in chest leads Marked left axis deviation History of ischemic heart disease (IHD) Lack of response to adenosine or carotid sinus massage QRS > 160 ms Verapamil is contraindication in wide complex tachycardia as it may causes ventricular fibrillation in patients with ventricular tachycardia In case of V Tach in case of digoxin toxicity: Treat with lidocaine and phenytoin; avoid Amiodarone and Procainamide because they increase digoxin toxicity Use DC shock when medical treatment failed For more medical pearls please visit: https://bestmedicalpearls.blogspot.com/