Antiarrythmics cause the heart to beat in a normal rhythm. Arrhythmias is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern.
This video includes:
What is Action Potential?
How Action Potential propagates in a cardiac muscle fibre and how it is originated in the nodal tissue?
What channels are involved?
The Na,K, Ca channels.
Phases of Action Potential. Automaticity. Conduction velocity. Slow response and fast response fibres. Arrhythmias. Types.
Antiarrythmic drugs Waughan Williams Classification
Class 1 Na channel blockers
Quinidine
Procainamide
Disopyramide
Class 2 Beta Blockers
Esmolol
Propanolol
Metoprolol
Class 3 K channel blockers
Amiodarone
Sotalol
Class 4 Ca channel blockers
Verapamil
Diltiazem
Their effects on Action Potential and ECG.
Miscellaneous class of antiarrythmics
Adenosine
Atropine
Isoprenaline
Magnesium sulphate