You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Quinidine belongs to class antiarrhythmic drug is and explain in detail?
i.e. (class I): (510-17-KDT 6th) (367-68-MDT-l1)ANTIARRHYTHMIC DRUGSClass Ia Sodium channel blockers* Depress phase O depolarization* Slow conduction, prolong repolarization Drugs* Quinidine, Procainamide, Disopyramide, MoricizineClass Ib * Shorten repolarization Drugs* Lidocaine, MexiletineClass IC * Depress phase O repolarization, slow conduction* Propafenone is a week calcium channel blocker and b-blockers and prolongs action potential and refractionariness Drugs* Flecainide, PropafenoneClass II b-blockers* Slow AV conduction Drugs* Esmolol, Propanolol, MetoprololClass III * Prolong action potential* Prolong repolarization and ERP Drug* Amiodarone, Bretylium (also class II) Dofetilide, Ibutilide, Dronedarone, SotalolClass IV Calcium Channel blockers Drugs* Verapamil, diltiazem