Key result
Electrocardiographic imaging accurately reconstructs T-wave morphologies with ~0.86 correlation compared to epicardial sock recordings.
Why the study?
Dispersion and gradients in repolarization are linked to life-threatening arrhythmias but are difficult to quantify accurately from surface electrocardiography.
Does electrocardiographic imaging accurately detect and map repolarization abnormalities compared to direct epicardial recordings?
Does electrocardiographic imaging accurately detect and map repolarization abnormalities compared to direct epicardial recordings?
Effect estimate: Correlation coefficient 0.85 (ex vivo) and 0.86 (in vivo) (95% CI 0.52-0.96)
Electrocardiographic imaging reliably and accurately maps repolarization abnormalities noninvasively, offering potential for improved diagnosis and risk stratification of arrhythmogenesis.
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Supports ECGI repolarization mapping in animal models; leaves open human validation before clinical use.
Bear et al. (2021) studied Repolarization abnormalities (n=14). Electrocardiographic imaging (ECGI) vs. Epicardial sock recordings was evaluated on Reconstruction of T-wave electrogram morphologies (Correlation coefficient 0.85 (ex vivo) and 0.86 (in vivo), 95% CI 0.52-0.96). Electrocardiographic imaging accurately reconstructed T-wave electrogram morphologies compared with epicardial sock recordings in both ex vivo (r=0.85) and in vivo (r=0.86) models.
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