Key result
Micra AV2 Atrial Sensing Setup triggers torsades de pointes in patient with QT prolongation.
Case Report (n=1)
No
Automated atrial sensing setup in leadless pacemakers can transiently lower pacing rates and trigger torsades de pointes in high-risk patients with QT prolongation, necessitating individualized manual programming.
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Alerts clinicians to torsades risk during Micra AV2 setup in QT prolongation; hypothesis-generating for automated protocol safety in leadless pacing.
A case of torsades de pointes triggered by transient bradycardia during Micra AV2 setup highlights a proarrhythmic risk of automated initialization. Individualized programming may be necessary in high-risk patients with QT prolongation.
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Munakata et al. (2025) conducted a case report in Complete AV block with QT prolongation (n=1). Micra AV2 Atrial Sensing Setup was evaluated on Occurrence of torsades de pointes. The automated Atrial Sensing Setup of the Micra AV2 pacemaker, which transiently reduces the pacing rate to 50 ppm, triggered torsades de pointes in an elderly patient with QT prolongation.
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