Key result
Body surface late potentials correlate with delayed post-MI myocardial activation, though small cell mass limits detection.
Why the study?
The electrophysiological basis and limitations of ventricular late potentials detected by body surface recordings in postinfarction reentrant excitation were not fully understood.
Understanding the electrophysiological limitations of late potentials in signal-averaged ECGs can improve their clinical utility for detecting arrhythmogenic substrates.
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Caution advised interpreting late potentials post-MI; leaves open translation of canine findings to clinical substrate detection.
El‐Sherif et al. (1990) studied Postinfarction reentrant excitation (canine model). Body surface recording of late potentials was evaluated on Correlation with delayed myocardial activation. Late potentials on body surface recordings correlated with delayed myocardial activation in a postinfarction canine model, though small active cell mass or slow conduction can limit detection.
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