Key result
Atrial overdrive pacing localized the focus of atrial tachycardia, with the post-pacing interval minus tachycardia cycle length being 11 +/- 8 msec at the successful ablation site (P<0.001).
Why the study?
Does atrial overdrive pacing help localize the focus of focal atrial tachycardia?
Observational (n=24)
Does atrial overdrive pacing help localize the focus of focal atrial tachycardia?
Absolute Event Rate: 11% vs 131%
p-value: p=< 0.001
Atrial overdrive pacing is a clinically useful maneuver to localize the focus of focal atrial tachycardia, as the difference between the post-pacing interval and tachycardia cycle length directly correlates with proximity to the focus.
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Atrial overdrive pacing may aid focal atrial tachycardia localization; hypothesis-generating and requires prospective validation.
Mohamed et al. (2006) conducted an observational in Focal atrial tachycardia (n=24). Atrial overdrive pacing vs. Sinus rhythm was evaluated on Difference between post-pacing interval and tachycardia or sinus cycle length at the site of earliest activation or successful ablation (p=< 0.001). Atrial overdrive pacing localized the focus of atrial tachycardia, with the post-pacing interval minus tachycardia cycle length being 11 +/- 8 msec at the successful ablation site (P<0.001).
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