Comparison of Two Highly Automated ECG Algorithms for Detection of Drug-Induced Cardiac Ion Channel Block.

Comparison of Two Highly Automated ECG Algorithms for Detection of Drug-Induced Cardiac Ion Channel Block.
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DOI:
10.1002/cpt.934
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发表时间:
2018-08
影响因子:
6.7
通讯作者:
Mason JW
Mason JW
中科院分区:
医学2区
文献类型:
--
作者:
Brockway M;Fossa AA;Mason JW

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US Food and Drug Administration (FDA) investigators recently demonstrated in a crossover study that early (J‐Tpeakc) and late (Tpeak–Tend) repolarization duration can differentiate selective potassium block with a high arrhythmia risk from multichannel block with lower risk in subjects receiving dofetilide, verapamil, quinidine, or ranolazine. The purpose of this study was to determine if the findings by the FDA using their published software algorithm could be corroborated using an alternative software algorithm for the same metrics and to determine if methodological differences resulted in clinically meaningful differences in interpretation. Exposure–response relationships computed with linear mixed effects models and mean maximal effects on ECG intervals measured by the two algorithms were similar, corroborating the FDA findings, but with some differences in the modeled slopes and magnitude of changes. The alternative software resulted in an average 25% reduction in the 95% confidence intervals of the mixed effects models with generally lower Akaike Information Criterion values.
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