Key result
Although a 6-lead mobile ECG device can feasibly measure QT intervals with 80% sensitivity and 99% specificity for prolongation, routine ambulatory monitoring by patients is not recommended due to clinical responsibility and infrastructure limitations.
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Highlights the uncertainty regarding whether device-detected atrial fibrillation carries the same stroke risk as clinical AF and warrants the same anticoagulation strategy.
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Groot et al. (2023) conducted an editorial in QT prolongation (n=235). 6-lead mobile electrocardiogram (mECG) device vs. 12-lead conventional ECG was evaluated on QT interval measurement in lead I (mean absolute difference 14 ms). Although a 6-lead mobile ECG device can feasibly measure QT intervals with 80% sensitivity and 99% specificity for prolongation, routine ambulatory monitoring by patients is not recommended due to clinical responsibility and infrastructure limitations.
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