Effect of Chronic Right Atrial Stretch on Atrial Electrical Remodeling in Patients With an Atrial Septal Defect
Why the study?
Does chronic right atrial stretch in patients with an atrial septal defect cause atrial electrical remodeling?
Population
Patients with an atrial septal defect (ASD)
Design
Cohort
Authors
Discussion
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Member takes
Implication
May sustain arrhythmia substrate post-ASD closure; hypothesis-generating for timing of intervention in observational data.
Key Points
- To investigate how chronic right atrial stretch due to atrial septal defect influences electrical remodeling in patients.
- Analysis of right atrial effective refractory period (ERP) and conduction delays.
- Assessment of sinus node function in patients with atrial septal defect.
- Modest increases in right atrial ERP were observed.
- Conduction delay at the crista terminalis persisted after ASD closure.
- Sinus node dysfunction was identified as a potential contributor to long-term atrial arrhythmias.
Structured PICO
Does chronic right atrial stretch in patients with an atrial septal defect cause atrial electrical remodeling?
P
Population
Patients with an atrial septal defect (ASD)
I
Intervention
Chronic right atrial stretch / ASD closure
O
Outcome
Atrial electrical remodeling (RA ERP, conduction delay at the crista terminalis, and sinus node dysfunction)surrogate
Conduction delay at the crista terminalis caused by chronic right atrial stretch in ASD persists after defect closure, potentially contributing to a long-term substrate for atrial arrhythmias.
Cite This Study
Morton et al. (2003) studied this question.