Key result
24-hour ECG monitoring detects ~91% of paroxysmal AF cases compared to 10-second ECGs.
Why the study?
The diagnostic value of different-duration ECGs in detecting paroxysmal atrial fibrillation was not well established.
Does longer duration ECG monitoring improve the detection rate of paroxysmal AF in patients with known paroxysmal AF?
Population
220 patients with paroxysmal atrial fibrillation diagnosed by 24-h dynamic ECG
Comparison
10-second ECG vs 5-minute ECG vs 24-hour dynamic ECG
Design
Observational study
Follow-up
24 hours
Authors
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Shorter ECGs miss most paroxysmal AF; leaves open optimal monitoring duration for diagnosis in undiagnosed patients.
Observational (n=220)
No
Does longer duration ECG monitoring improve the detection rate of paroxysmal AF in patients with known paroxysmal AF?
Absolute Event Rate: 90.5% vs 8.2%
Longer duration ECG monitoring significantly increases the detection rate of paroxysmal atrial fibrillation.
Li et al. (2021) conducted an observational in Paroxysmal atrial fibrillation (n=220). 24-hour dynamic ECG vs. 10-second and 5-minute ECGs was evaluated on Detection of paroxysmal AF. Longer ECG monitoring durations yielded higher detection rates for paroxysmal AF, with 24-hour dynamic ECG detecting 90.5% of cases compared to 40.5% for 5-minute and 8.2% for 10-second ECGs.
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