Key result
Idiopathic paroxysmal AF is linked to ~18 ms longer atrial late potentials on signal-averaged ECG.
Why the study?
Detection of delayed potentials by signal-averaged electrocardiogram (SAE) is useful for predicting ventricular tachycardia but reports on atrial arrhythmias are limited.
Does signal-averaged electrocardiogram (SAE) detect atrial late potentials that are associated with a history of paroxysmal atrial fibrillation?
Observational (n=58)
No
Does signal-averaged electrocardiogram (SAE) detect atrial late potentials that are associated with a history of paroxysmal atrial fibrillation?
Absolute Event Rate: 25.3% vs 7.3%
p-value: p=<0.01
Detection of atrial late potentials using signal-averaged electrocardiogram is significantly associated with a history of paroxysmal atrial fibrillation and may be useful for its prediction.
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Iwao Yamaguchi (1990) conducted an observational in Paroxysmal atrial fibrillation (n=58). History of paroxysmal atrial fibrillation vs. No history of paroxysmal atrial fibrillation was evaluated on Duration of atrial late potentials (interval E) (p=<0.01). Patients with a history of idiopathic paroxysmal atrial fibrillation had significantly longer atrial late potentials on signal-averaged ECG compared to those without (25.3 ms vs 7.3 ms, p<0.01).
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