Key result
Patients with paroxysmal atrial fibrillation had longer intermediary rhythms preceding AF initiation compared to those with persistent AF (6.3 vs 4.2 cycles; P=0.026).
Why the study?
What are the electrophysiologic differences in the left atrium between paroxysmal and persistent atrial fibrillation during initiation and sustained episodes?
Population
21 patients with paroxysmal or persistent atrial fibrillation.
Comparison
Mapping of the left atrium during sustained… vs Paroxysmal vs. persistent atrial fibrillation.
Design
Cross-sectional
Authors
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Supports distinct AF initiation dynamics by subtype; leaves open whether targeting intermediary rhythms alters progression.
Observational (n=21)
What are the electrophysiologic differences in the left atrium between paroxysmal and persistent atrial fibrillation during initiation and sustained episodes?
Absolute Event Rate: 6.3% vs 4.2%
p-value: p=0.026
Persistent AF is characterized by shorter cycle lengths and more disorganized activity compared to paroxysmal AF, with intermediary rhythms playing a key role in AF initiation.
Ndrepepa et al. (2002) conducted an observational in Paroxysmal and persistent atrial fibrillation (n=21). Paroxysmal atrial fibrillation vs. Persistent atrial fibrillation was evaluated on Intermediary rhythm cycles preceding initiation of AF (p=0.026). Patients with paroxysmal atrial fibrillation had longer intermediary rhythms preceding AF initiation compared to those with persistent AF (6.3 vs 4.2 cycles; P=0.026).
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