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Alright so Kaplan pharm says antiarrhythmic drugs slow down heart rythm.
1. Quinidine is an anti-muscarinic which will increase the HR, so would this be an exception?
2. What is the rationale of using quinidine for atrial fibrillation, which is really the problem of having coordinated electrical signals being fired from SA node? I don't think I get this since blocking the activated Na+ channel won't really make the heart beat in a coordinated fashion, right?
Many thanks in advance.
1. Quinidine is an anti-muscarinic which will increase the HR, so would this be an exception?
2. What is the rationale of using quinidine for atrial fibrillation, which is really the problem of having coordinated electrical signals being fired from SA node? I don't think I get this since blocking the activated Na+ channel won't really make the heart beat in a coordinated fashion, right?
Many thanks in advance.