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Publication stageIn Press Journal Pre-Proof
Conflict of interest:
Kohei Iwasa, Masato Okada, Koji Tanaka, Yuko Hirao, and Nobuaki Tanaka have no conflict of interest to declare for this study.
Funding: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
Key Teaching Point
Atrial overdrive pacing (AOD) is useful in differentiating slow-fast atrioventricular nodal reentrant tachycardia (AVNRT) from junctional tachycardia (JT). Slow-fast AVNRT usually exhibits an atrial-His-atrial (AHA) response, whereas JT exhibits an atrial-His-His-atrial (AHHA) response.
An AHHA response is possible in slow–fast AVNRT with a double ventricular response.
In slow-fast AVNRT with a double ventricular response, the anatomical relationship between the pacing site and the entrance of the slow conduction (slow pathway) may contribute to the different responses to AOD.
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