Adenosine is not effective for termination in which condition?

Study for the Pre-Tachyarrhythmia Test. Prepare with interactive questions and comprehensive explanations. Improve your understanding of tachyarrhythmia conditions and get ready for your exam!

Multiple Choice

Adenosine is not effective for termination in which condition?

Explanation:
Adenosine works by briefly blocking the AV node, which can interrupt reentrant circuits that depend on AV nodal conduction, such as AV nodal reentrant tachycardia and AV reciprocating tachycardia. Atrial fibrillation, however, is generated by multiple reentrant circuits within the atria itself and is not dependent on the AV node for its maintenance. Blocking AV nodal conduction may slow the ventricular response in AF or reveal underlying atrial activity, but it does not terminate the atrial fibrillation. Therefore, AF is not terminated by adenosine.

Adenosine works by briefly blocking the AV node, which can interrupt reentrant circuits that depend on AV nodal conduction, such as AV nodal reentrant tachycardia and AV reciprocating tachycardia. Atrial fibrillation, however, is generated by multiple reentrant circuits within the atria itself and is not dependent on the AV node for its maintenance. Blocking AV nodal conduction may slow the ventricular response in AF or reveal underlying atrial activity, but it does not terminate the atrial fibrillation. Therefore, AF is not terminated by adenosine.

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