Key result
Left atrial electrograms can accurately estimate right atrial entrainment response (mean discrepancy +1+/-6 msec, r = 0.988) if antidromic activation of the left atrium is taken into account.
Why the study?
Can left atrial electrograms be used to accurately estimate right atrial entrainment response in congenital heart patients?
Observational
Can left atrial electrograms be used to accurately estimate right atrial entrainment response in congenital heart patients?
Effect estimate: r = 0.988
Left atrial electrograms can accurately estimate right atrial entrainment response if antidromic activation of the LA is accounted for, facilitating localization of reentrant circuits.
Authors
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May aid reentrant circuit localization during ablation in congenital heart disease; leaves open prospective validation before practice change.
Triedman et al. (2000) conducted an observational in Congenital heart disease with right atrial reentrant circuits. Left atrial electrogram reference method vs. Standard postpacing interval measurement was evaluated on Agreement between entrainment response measurement methods (r = 0.988). Left atrial electrograms can accurately estimate right atrial entrainment response (mean discrepancy +1+/-6 msec, r = 0.988) if antidromic activation of the left atrium is taken into account.
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