What is the result of ablating a bystander pathway?

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Multiple Choice

What is the result of ablating a bystander pathway?

Explanation:
In reentrant tachycardias, only the parts that form and sustain the looping circuit matter. A bystander pathway conducts but does not participate in maintaining that loop. Therefore ablating it removes a nonessential route without interrupting the critical circuit. As a result, the tachycardia continues because the core reentrant circuit remains intact. It’s unlikely to accelerate the tachycardia or spontaneously create a new atrial flutter, since those outcomes would require changes to the actual circuit or broader atrial substrate, not just removal of a nonessential pathway.

In reentrant tachycardias, only the parts that form and sustain the looping circuit matter. A bystander pathway conducts but does not participate in maintaining that loop. Therefore ablating it removes a nonessential route without interrupting the critical circuit.

As a result, the tachycardia continues because the core reentrant circuit remains intact. It’s unlikely to accelerate the tachycardia or spontaneously create a new atrial flutter, since those outcomes would require changes to the actual circuit or broader atrial substrate, not just removal of a nonessential pathway.

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