Which of the following statements about pacing-termination strategies is most accurate?

• A. They are used in all tachyarrhythmias.
• B. They are used in select tachyarrhythmias and specific clinical scenarios.
• C. They are the primary therapy for atrial fibrillation.
• D. They have no role in tachyarrhythmia management.

Answer: (B)

Pacing-termination strategies are a targeted approach that uses rapid pacing impulses to interrupt certain tachyarrhythmias by resetting or interrupting a reentrant circuit. This method works best when the tachycardia has a reentrant mechanism and when a device or setup can deliver anti-tachy pacing safely. It is not a universal fix for all tachyarrhythmias, and it is not the primary therapy for atrial fibrillation, which is usually managed with rate control, rhythm control medications, or ablation. Because of these nuances, pacing termination is used in select tachyarrhythmias and in specific clinical scenarios.