ArticleHeart rhythm2026
The atrial electrocardiogram in patients with persistent atrial fibrillation.
Article in Heart rhythm, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
backgroundThe electrocardiogram (ECG) in persistent atrial fibrillation (AF) is underused. Signal processing techniques can extract the f-waves from the QRS-T complex to generate the atrial ECG (A-ECG).
objectiveThis study aimed to explore A-ECG technical and clinical issues.
methodsThirty patients (age, 62.6 ± 9.4 years; 80% male; CHA
resultsTime-frequency A-ECG analysis demonstrated dynamic spectral features. Repeated 10-second A-ECG recordings had higher coefficient of variation (7.5%-10.0%) compared with repeated 4- to 5-minute recordings (1.1%-3.4%). Short-term reproducibility of 2 recordings ∼30 minutes apart showed high correlation (r = 0.91-0.99; all P values < .0001). Regional lead analyses showed no significant differences except for the comparison of posterior leads V
conclusionThis study provides the practical basis for further use of the A-ECG as a novel tool for evaluating persistent AF and demonstrates its clinical relevance. Further phenotypic classification of AF based on the A-ECG and assessment of treatment response should be explored.
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