Pharmacology - ANTIARRHYTHMIC DRUGS (MADE EASY)
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- Опубліковано 28 чер 2024
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Antiarrhythmics are drugs that are used to treat abnormal rhythms of the heart, such as atrial fibrillation, atrial flutter, ventricular tachycardia, and ventricular fibrillation. In general, antiarrhythmic drugs work by suppressing abnormal impulse formation, suppressing abnormal impulse conduction, or prolonging effective refractory periods. This pharmacology lecture covers topics such as cardiac conduction system: SA node, AV node, bundle of His, bundle branches, purkinje fibers, cardiac action potential, pacemaker cells, conducting cells, contractile cells; mechanisms of arrhythmias, bradycardia, tachycardia, abnormal automaticity, triggered activity, Wolff-Parkinson-White syndrome, atrioventricular nodal reentry tachycardia, Vaughan-Williams classification, class I (A, B, C), class II, class III, class IV antiarrhythmic drugs. Antiarrhythmics mentioned include: Procainamide, Quinidine, Disopyramide, Lidocaine, Mexiletine, Flecainide, Propafenone, Propranolol, Metoprolol, Atenolol, Esmolol, Amiodarone, Dronedarone, Sotalol, Dofetilide, Ibutilide, Verapamil, Diltiazem, Digoxin, Adenosine, and Magnesium Sulfate.
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Source of the animation of the cardiac conducting system: www.passmyexams.co.uk/GCSE/bio...
0:00 Intro - Basics of ECG
1:55 Cardiac cell types
3:40 Pacemaker potential
5:16 Cardiac muscle cell potential
7:09 Types of arrhythmia
12:08 Class I antiarrhythmics
15:26 Class II antiarrhythmics
16:39 Class III antiarrhythmics
18:52 Class IV antiarrhythmics
19:45 Digoxin,
21:51 Adenosine
22:38 Magnesium
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Hi doctor Rajeev, I am 4th medical student, I would like to ask you regarding for Right bundle branch block (RBBB)- what Precordial leads should appear rSR waves: only V2 or both V1 and V2 ?
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I'm really glad you went over the physiology before discussing the antirrhythmic drugs, this is a perfect video for any student of medicine!
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Drug explanation start at 12:12 🔴
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thank you for this video. I'm a practicing LPN. Loved the physiology before explaining the mechanism of action. Some of this I have to replay to get it, but it breaks it down. I need to go over more deeply the Action Potential again.
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