MRCP Part 1 [mrcp-part-1]

What is the mechanism of action of digoxin in atrial fibrillation?

Direct cardioversion to sinus rhythm Blocks sodium-potassium ATPase, increasing vagal tone and slowing AV node conduction Blocks beta-adrenergic receptors at the AV node Prolongs the action potential in atrial tissue

Correct Answer:

Blocks sodium-potassium ATPase, increasing vagal tone and slowing AV node conduction

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